منصة إيفاد العلمية

د. طارق يحى سليمان قابيل

إرسال رسالة

التخصص: التقنية الحيوية (البيوتكنولوجي)

الجامعة: القاهرة

النقاط:

معامل الإنتاج البحثي

الخبرات العلمية

أكاديمي، خبير التقنية الحيوية، كاتب، ومترجم، ومحرر علمي ومستشار الصحافة العلمية والتواصل العلمي
عضو هيئة التدريس بقسم التقنية الحيوية، جامعة القاهرة*
* متخصص في الوراثة الجزيئية والتكنولوجيا الحيوية.
* مقرر لجنة الآداب والفنون والعلوم الاجتماعية والثقافة العلمية والدراسات الإستراتيجية ومؤشرات العلوم والتكنولوجيا التابعة لمكتب التقييم
زميل أكاديمية البحث العلمي والتكنولوجيا وعضو لجنة الثقافة والمعرفة بالمجالس العلمية المتخصصة، أكاديمية البحث العلمي والتكنولوجيا
* كاتب، ومترجم، ومحرر علمي وعضو مؤسس للرابطة العربية للإعلاميين العلميين، وعضو لجنة العضوية بالرابطة، ومؤسس موقع "ويكيبيديا" العربي.
* عضو المجموعة الاستشارية العربية للعلوم والتكنولوجيا، التابعة للمكتب الإقليمي للأمم المتحدة للحد من مخاطر الكوارث للدول العربية.
* عضو مجموعة البحث والتطوير الزراعة الحيوية والأغذية المستقبلية (JRDGs)، بمركز كومساتس المشترك للتكنولوجيا الحيوية الصناعية (CCIB) في تيانجين، ا
*عضو هيئة تحكيم جائزة الدولة التشجيعية ومسابقة سميرة موسي للترجمة العلمية، والمشاريع البحثية بمكتبة الإسكندرية وغيرها من المؤسسات الأكادي
*عضو لجنة تطوير مجلة "العلم" المصرية بأكاديمية البحث العلمي والتكنولوجيا المصرية.
* رئيس تحرير مجلة العلوم الزراعية وعلم النبات
* رئيس التحرير المتخصص، مجلة علوم النبات
* المشرف على قطاع التنمية التكنولوجية والخدمات العلمية-أكاديمية البحث العلمي والتكنولوجيا (سابقًا).
* عضو لجنة دعم البحوث الأساسية Science Up بمكتب التقييم الفني والمتابعة وتقييم الأداء التابع لرئيس أكاديمية البحث العلمي والتكنولوجيا (سابقا).
* عضو لجنة الآداب والفنون والعلوم الاجتماعية والثقافة العلمية والدراسات الاستراتيجية ومؤشرات العلوم والتكنولوجيا التابعة لمكتب التقييم ا
الباحث الرئيسي ورئيس فريق خارطة طريق "مستقبل التواصل العلمي في مصر ودوره في الاعلام العلمي" أكاديمية البحث العلمي والتكنولوجيا

الأبحاث المنشورة

Circular economy in Egypt: an overview of the current landscape and potential for growth, Insights into Regional Development

المجلة: Insights into Regional Development

سنة النشر: 2023

تاريخ النشر: 2023-09-01

This paper provides an overview of the circular economy in Egypt. With the country facing significant environmental challenges, a circular economy approach can offer sustainable solutions to Egypt's environmental challenges by addressing issues like limited resources, waste generation, and a growing population in an eco-friendly and long-term perspective. This research employs a mixed-methods approach, including a literature review, surveys, and consultations with key stakeholders. The analysis reveals that although there are numerous challenges to establishing a circular economy in Egypt, such as limited understanding, insufficient government backing, and inadequate infrastructure, there are also opportunities, such as increasing demand for eco-friendly goods and services, as well as a receptive business environment. The paper recommends various policy and practical interventions to overcome these barriers and capitalize on these opportunities, including increasing awareness and understanding of the circular economy, developing supportive programs and regulations, investing in infrastructure and technology, and fostering stakeholder collaboration. This paper provides valuable insights into the potential for a circular economy in Egypt and the steps that can be taken to create a more sustainable future for the country. As such, it will interest policymakers, researchers, and practitioners working in the sustainability and environmental management field. The successful implementation of a circular economy in Egypt will require collective efforts from stakeholders to promote long-ter https://doi.org/10.9770/IRD.2023.5.3(3).

Nanotechnology: A Revolutionary Approach to Red Palm Weevil Control.

المجلة: Blessed Tree" Magazine

سنة النشر: 2024

تاريخ النشر: 2024-07-01

The Red Palm Weevil: A Challenge for Sustainability and a Target for Nanotechnology. The Red Palm Weevil (RPW) poses a significant threat to date palm cultivation worldwide, causing substantial economic losses. Traditional control methods using chemical insecticides and pheromone traps have limitationseconomic due to pest adaptability and environmental concerns. This study explores the potential of nanotechnology as a novel approach for combating RPW. We review the devastating impact of RPW infestations and the shortcomings of current control strategies.

Loutfy Boulos: A pillar of Egyptian botany and his botanical legacy.

المجلة: Taeckholmia

سنة النشر: 2024

تاريخ النشر: 2024-04-01

This extensive paper celebrates the incredible contributions of Loutfy Boulos to the Flora of Egypt. Boulos was considered an outstanding international Egyptian taxonomist. As a result of his extensive contribution to fieldwork, taxonomic expertise, and meticulous documentation and records, our understanding of Egypt's plant diversity has been significantly advanced. Through his botanical explorations across diverse regions, Boulos collected and identified numerous plant specimens, described new species, added new records, clarified taxonomic problems, and provided invaluable data for conservation efforts. Flora of Egypt's four volumes become an essential reference for researchers, educators, and conservationists. Later in 2009, an updated checklist of the native vascular flora of Egypt was published, with details on the occurrence at the regional level. Indeed, he provided invaluable information in our region's literature. This paper highlights Boulos' significant impact on the scientific community by expanding taxonomic knowledge, promoting conservation, and fostering international collaboration in the field of botany.

Microbial Biotechnology: A Key Tool for Addressing Climate Change and Food Insecurity

المجلة: European Journal of Biology and Biotechnology

سنة النشر: 2024

تاريخ النشر: 2024-03-12

Amidst escalating climate change and food insecurity concerns, exploring the potential of microbes offers a promising and sustainable solution. This review delves into the complex interplay between microbial communities and the dual challenge of environmental crisis and food security. Ubiquitous microorganisms – from bacteria to fungi and archaea – shape our planet's ecosystems, playing a crucial role in soil health, nutrient cycling, and plant-microbe interactions. This review dissects diverse microbial habitats, highlighting their remarkable adaptability to varied environments. It then underscores the reciprocal impacts of human-induced environmental changes on microbes and their habitats. Addressing these challenges, the review presents microbes as powerful allies in mitigating climate change. Their ability to sequester carbon, reduce greenhouse gas emissions, and enhance soil fertility is explored. Innovations like biofertilizers and biopesticides demonstrate the potential of microbial technologies to revolutionize agriculture and ensure global food security. Concluding, the review emphasizes the symbiotic link between microbes and sustainable food production. Microbial technologies can adapt agriculture to changing climate conditions, addressing water scarcity and enhancing soil moisture retention. Their potential to boost productivity in both traditional and precision agriculture under diverse climatic conditions is highlighted. This review calls for the urgent recognition and harnessing of microbial power for a sustainable future. Embracing microbial technologies not only fosters environmental stewardship but also paves the way for a resilient and resource-efficient agricultural future. https://doi.org/10.24018/ejbio.2024.5.2.503.

The remarkable journey of the Swedish botanist Vivi Laurent-Täckholm

المجلة: Taeckholmia

سنة النشر: 2023

تاريخ النشر: 2023-04-01

This year 2023 marks one hundred and twenty-five years since the birth of Vivi Laurent-Täckholm, a Swedish botanist and children's book writer, and a global star who came to Egypt in the first half of the 20th century and she established the Herbarium at Cairo University with other colleagues. She was a professor of botany at Cairo University who authored a distinctive flora book, Flora of Egypt. She also wrote a series of popular science works on plants and the history of Egypt. This grand old woman had been closely associated with Cairo University for over 50 years, some 32 years as a professor of botany in the Herbarium. She was recognized and respected not only as the 'dean of Egyptian botany', but appreciated by all the researchers who knew her as one of those rare scientist-scholars who is completely selfless. She helped countless students and investigators both in Egypt and abroad by giving freely of her vast experience and deep knowledge on all matters Egyptian, motivated only by a sincere hope that a more carefully planned research project could be launched, or if a project was near completion, that a more mature complete interpretation could be achieved. With the passing of Vivi Laurent-Täckholm, who died in Stockholm on 3 May 1978, at the age of 80, biological sciences in general, and Egyptian botanical science in particular, have suffered a great loss. A brief overview of her life reveals that Vivi Täckholm was a very unconventional woman by reviewing her achievement during her lifelong journey.

Circular bioeconomy in Egypt: the current state, challenges, and future directions

المجلة: Insights into Regional Development

سنة النشر: 2023

تاريخ النشر: 2023-03-30

The concept of circular bioeconomy or bio-based circular economy is an integrated concept of circular economy and bioeconomy. In other words, it alludes to a systematic approach to economic growth that makes use of cascading biomass production from biological resources. In order to fulfil the objectives of sustainable development and the circular bioeconomy in Egypt, it is recommended that the bioeconomy be focused on as an economy of societal value in this article. It also discusses future directions and actions that can be used in this regard. This paper presents the current situation of the development of circular bioeconomy in Egypt and discuss future directions and measures that can be exploited and recommends focusing on the bioeconomy as an economy of societal value, enabling the achievement of the goals of sustainable development and the circular bioeconomy. Although there is no specific strategy for the bioeconomy, there are numerous government initiatives aiming to benefit from it in the future.

Discovery of the Human Homolog of Sex-Determining Region (SRY) Gene in Dioecious Plants

المجلة: Saudi Journal of Biological Sciences

سنة النشر: 2023

تاريخ النشر: 2023-02-01

Sex determination in the early developmental stages of dioecious crops is economically-beneficial. During this study, a human homology of SRY gene was successfully identified in dioecious crops. SRY gene sequences of date palm and jojoba were submitted to GenBank under the accession numbers KC577225 and MK991776, respectively. This is the first report regarding the novel sex-determination methodology of four dioecious plants (jojoba, date palm, papaya, and pistachios). SRY sex gene was found in all the tested dioecious plant and human samples. This novel approach is simple and of significant importance for breeders. It facilitates the unambiguous selection of jojoba and date palm female plants at an early age and reduces the plantation cost of cultivating non-productive male plants. This is a rapid sex-determination technique for dioecious plants and mammals at an early stage. This technique specifically targets the SRY sequence that has been comprehensively investigated in humans. The kit development for the SRY-based sex determination of various crops is in progress. https://doi.org/10.1016/j.sjbs.2022.103548

How can climate change education contribute to awareness and action in Egypt? Cairo university as a case study.

المجلة: Journal of the International Academy for Case Studies

سنة النشر: 2022

تاريخ النشر: 2022-07-25

Climate change poses serious threats to human civilization, and the fact that Egypt is preparing to host the United Nations Climate Change Conference (COP 27) in 2022 appears to offer a good opportunity to create a better future for the Egyptian people if we seize the opportunity to educate students and the public more about this hot topic. Universities face, as do all institutions, clear and growing risks from climate disruption, and thus, university communities must be aware of these risks. Addressing these risks can provide the opportunity to renovate and equip universities for the 21st century to be safe, secure, and active in the face of climate change and to solve real-world problems. Universities have a critical role to play in combating climate change, but the issue’s complexity and multifaceted nature pose challenges to the institution’s traditional operations. Since guidelines for implementing climate change education (CCE) are not yet commonly applied, higher education institutions can support efforts related to that. In continuation of work by the correspondent author that discussed the role that should be played by Egyptian universities in keeping the public’s awareness of climate change and sustainable development, a questionnaire was prepared based on previous studies and administered to 305 staff, graduates, and students at Cairo University (305 votes), selected from different faculties in different stages analyzed. The survey covered demographic information and a range of matters related to climate change and environmental intentions. Data were analyzed using SPSS version 21.0. Demographic characteristics and the other qualitative measures were presented as counts and percentages (%). There are currently no common guidelines for implementing CCE, and higher education institutions can support efforts related to that. This working paper aimed to explore the relationships between universities and their complex interactions with society as well as education’s impact on climate change; the paper provides a conceptual mapping of the various functions of universities and the pathways through which they might influence climate change. Cairo University is taken as a case study of the normative implications for the role of universities.

Mostafa Kamal Tolba, Egyptian Scientist, Environmental Expert, and the Founder of Environmental Diplomacy (1922 – 2016)

المجلة: Egyptian Journal of Botany

سنة النشر: 2022

تاريخ النشر: 2022-06-14

THE YEAR 2022 marks the birth centenary of Mostafa Kamal Tolba, a United Nations official considered the father of the Montreal Protocol, an agreement intended to protect the ozone layer. The Montreal Protocol is widely known as a section of the world’s most successful environmental treaty. Dr. Tolba was born on December 8, 1922 and died in Geneva on March 28, 2016. He was a professor and chief scientist. He is an outstanding Egyptian scholar whose brilliant letters in the environmental domain are remembered by the Eastern and Western world. He held senior academic and political positions in Egypt and was enumerated by all international fora as the founder of the concept of environmental diplomacy. He performed official duties in the Ministry of Youth and Telecommunications. Regionally, he was the first president of the Board of Trustees of the Arab Forum for Environment and Development. He was also designated Executive Director of the United Nations Environment Program (UNEP) for 17 years. The Egyptian-born Dr. Tolba was praised for his leadership in steering the earlier Vienna Convention in addition to his groundbreaking work on the Montreal Protocol. He belonged to a generation of international civil servants who effectively led international organizations and programs and were also able to change international policymaking. However, his strong and impressive legacy continues to be disseminated through the UNEP’s work and the tasks accomplished by ministries of the environment worldwide. This paper highlights the crucial roles discharged by Dr. Tolba as a university professor and as a global administrator of a dossier of urgent interest. His work affected and continues to impact the global environment, especially climate change.

Genetic Characterization and Agronomic Evaluation of Drought Tolerance in Ten Egyptian Wheat (Triticum aest

المجلة: Agronomy

سنة النشر: 2022

تاريخ النشر: 2022-05-18

This investigation was carried out for genetic characterization and determination of drought tolerance of ten Egyptian cultivars of wheat (Triticum aestivum L.), namely Misr 1, Misr 2, Gemmiza 9, Gemmiza 10, Gemmiza 11, Gemmiza 12, Shandawel 1, Giza 168, Giza 171, and Sids 14. These cultivars were grown in two winter seasons: 2018/2019 and 2019/2020 at the experimental farm Fac. of Agric., Suez Canal Univ., Ismailia, Egypt, under two watering regimes: normal (100%) and stress (50% FC) conditions. Six agronomic traits and five tolerance indices, namely stress tolerance (TOL), mean productivity (MP), geometric mean productivity (GMP), yield stability index (YSI), and drought susceptibility index (DSI), were used to evaluate the impact of drought stress. The results reflected Giza 171, Misr 2, and Giza 168 as precious germplasm for breeding of high-yielding drought-tolerant wheat. A highly significant positive correlation was recorded between yield under normal and stress conditions on the one hand and each of MP and GMP on the other hand. In addition, YSI appeared engaged in a highly significant positive correlation with yield under drought conditions only. TOL and DSI appeared insignificantly correlated with yield. Therefore, MP and GMP were reflected as the first runners among indices suitable to distinguish the high-yielding cultivars under drought conditions. At the molecular level, five primers of Start Codon Targeted (SCoT) markers were able to resolve and characterize the studied cultivars, which reflected SCoT as a potent gene-targeting molecular marker, able to characterize and resolve genetic diversity in wheat at the cultivar level using few primers. Therefore, SCoT is a time-efficient molecular marker, and it can efficiently replace indices in characterization of drought-tolerant genotypes with a high confidence level and reasonable cost. https://doi.org/10.3390/agronomy12051217

This to dedicate the 100th anniversary of the birth of Prof. Mohamed Abdel Fattah El-Kassas: “The father of Egypt’s Environment

المجلة: Journal of Advanced Research

سنة النشر: 2022

تاريخ النشر: 2022-01-01

Professor Mohamed Abdel Fattah Al-Kassas (July 6, 1921 – March 21, 2012) was one of the most extraordinary scientific luminaries in Egypt, he is among the pioneers who have warned the world against the hazards of desertification and has played an important role in designing and implementing a number of UNESCO programs such as Man and the Biosphere. He was professor emeritus for Botany University of Cairo, Egyptian botanist and conservationist, a specialist in the ecology of desert plants, his environmental and botanical work over many decades cut a broad and fertile swath in areas of desert ecology and environmental changes over time, especially in relation to desertification – a process he is held to have brought to both public and scientific attention and was among the first to publish on the topic of desertification. He studied at the University of Cairo, where he received a B.Sc. in 1944 and a M.Sc. in 1947, and at the University of Cambridge (Ph.D. in 1950). He was a member of the Egyptian Academy of Science and the Institute of Egypt. Prof. Kassas was an advisory member of the United Nations Environment Programme from its beginning, He was also the notable President (1978–1984) of the International Union for Conservation of Nature (IUCN), a fellow of the Indian National Academy of Science, the World Academy of Art and Science, and honorary member of the Club of Rome. Prof. Kassas born and raised in a tiny fishing northern village located at the junction of the Mediterranean and Lake Borolos in July 1921, He dedicated his life to research and scientific endeavors to protect an https://doi.org/10.1016/S2090-1232(21)00256-3

Soil erosion threatens food production. Short Communication

المجلة: Journal of Agricultural Science and Botany

سنة النشر: 2021

تاريخ النشر: 2021-11-14

Erosion removes soil from land surfaces, reducing the productivity of all natural ecosystems, including agricultural, forest, and pasture ecosystems [1]. Soil erosion, water availability, climate change due to fossil fuel usage, eutrophication of inland and coastal marine bodies of water, and biodiversity loss are among the world's most pressing environmental issues. Malnutrition affects about 66 percent of the world's population [2], the highest proportion of malnourished people ever (malnutrition: defective nutrition caused by insufficient or unbalanced nutritional intake or poor digestion or use of nutrients) [3]. More food will be required as the global population exceeds seven billion people and is anticipated to reach 9.3 billion by 2050 [4]. Consider that more than 99.7% of human food (calories) is produced on land [5], while less than 0.3 percent is produced in marine and aquatic ecosystems. The productivity and quality of all agricultural soils are essential for maintaining and growing the world's food supply. Over many years, human-induced soil erosion and accompanying damage to all agricultural land has resulted in the abandonment of important agricultural land and a reduction in productivity of the remaining land, which is somewhat compensated by the injection of nitrogen and phosphate fertilisers [6]. The loss of agriculture due to soil erosion frequently necessitates the development of new cropland from forestland and pastureland, as well as the application of nitrogen and phosphate fertilisers to these new croplands [7]. Soil erosion also reduces the diversity of plants, animals, and soil microorganisms, which is important. .

Nucleotide sequences and their uses. Commentary

المجلة: Journal of Agricultural Science and Botany

سنة النشر: 2021

تاريخ النشر: 2021-11-07

Within a gene, introns and exons are nucleotide sequences. Exons are chemically bound to one another in order to form mature mRNA, whereas introns are deleted by RNA splicing as RNA matures, meaning they are not expressed in the final messenger RNA (mRNA) product. Exons are expressed sequences, whereas introns are intervening sequences. Each human gene has an average of 8.8 exons and 7.8 introns. Exons Exons are conserved nucleotide sequences in DNA and RNA that are used to make mature RNA. The process of using DNA as a template to make mRNA is known as transcription. In a process known as translation, mRNA collaborates with ribosomes and transfer RNA (tRNA), both of which are found in the cytoplasm, to produce proteins. In addition to any protein coding sequences, exons normally include both the 5' and 3' untranslated regions of mRNA, which contain start and stop codons. Introns Introns are nucleotide regions in DNA and RNA that do not code for proteins and are deleted by RNA splicing during the precursor messenger RNA (pre-mRNA) stage of mRNA maturation. Introns are found in a wide variety of genes that create RNA in most living species, including viruses, and can range in size from tens to thousands of base pairs. Introns can be classified into four different types: 1. Spliceosomes delete introns from protein-coding genes. 2. Proteins that delete introns from tRNA genes 3. Self-splicing introns, which use guanosine-5'-triphosphate (GTP) or another nucleotide cofactor to remove themselves from mRNA, tRNA, and rRNA precursors (Group 1) 4. Self-splicing introns, which can remove

Mohamed Abdel Fattah Al-Kassas: The Founding Father of Egypt’s Ecology

المجلة: Egyptian Journal of Botany

سنة النشر: 2021

تاريخ النشر: 2021-12-01

“PROF. KASSAS is the very embodiment of all that is good in a human being. His life is his message. He has stood for achieving harmony between humankind and nature as well as peace and harmony among nations.” M. S. Swaminathan* Professor Mohamed Abdel Fattah Al-Kassas (July 6, 1921 - March 21, 2012) was one of the most extraordinary scientific luminaries in Egypt, he is among the pioneers who have warned the world against the hazards of desertification and has played an important role in designing and implementing a number of UNESCO programs such as Man and the Biosphere. He was professor emeritus for the Botany University of Cairo, Egyptian botanist and conservationist, a specialist in the ecology of desert plants, his environmental and botanical work over many decades cut a broad and fertile swath in areas of desert ecology and environmental changes over time, especially in relation to desertification – a process he is held to have brought to both public and scientific attention and was among the first to publish on the topic of desertification. He studied at the University of Cairo, where he received a B.Sc. in 1944 and an M.Sc. in 1947, and at the University of Cambridge (Ph.D. in 1950). He was a member of the Egyptian Academy of Science and the Institute of Egypt. Prof. Kassas was an advisory member of the United Nations Environment Programme from its beginning, He was also the notable President (1978-1984) of the International Union for Conservation of Nature (IUCN), a fellow of the Indian National Academy of Science, the World Academy of Art and Science, and an honorary member of the Club of Rome. https://doi.org/10.21608/ejbo.2021.90393.1760

"Boosting of Antioxidants and Alkaloids in Catharanthus roseus Suspension Cultures Using Silver Nanoparticles with Expression of CrMPK3 and STR Genes

المجلة: Plants

سنة النشر: 2021

تاريخ النشر: 2021-11-17

Global agricultural systems are under unprecedented pressures due to climate change. Advanced nano-engineering can help increase crop yields while ensuring sustainability. Nanotechnology improves agricultural productivity by boosting input efficiency and reducing waste. Alkaloids as one of the numerous secondary metabolites that serve variety of cellular functions essential for physiological processes. This study tests the competence of silver nanoparticles (AgNPs) in boosting alkaloids accumulation in Catharanthus roseus suspension cultures in relation to the expression of C. roseus Mitogen Activated Protein Kinase 3 (CrMPK3) and Strictosidine Synthase (STR) genes. Five concentrations (5, 10, 15, 20 and 25 mg·L−1) of AgNPs were utilized in addition to deionized water as control. Results reflected binary positive correlations among AgNPs concentration, oxidative stress indicated with increase in hydrogen peroxide and malondialdehyde contents, activities of ascorbate peroxidase and superoxide dismutase, expression of the regulatory gene CrMPK3 and the alkaloid biosynthetic gene STR as well as alkaloids accumulation. These correlations add to the growing evidence that AgNPs can trigger the accumulation of alkaloids in plant cells through a signaling pathway that involves hydrogen peroxide and MAPKs, leading to up-regulation of the biosynthetic genes, including STR gene.

. Impact of fungal elicitor and culture conditions on induction of calli and alkaloids production in narcissus tazetta var. Italicus tissue cultures.

المجلة: Plant cell biotechnology and molecular biology

سنة النشر: 2021

تاريخ النشر: 2021-05-03

The use of plant-derived drugs has been increased throughout the world as a result of health hazards and toxicity associated with the use of synthetic pharmaceutical compounds. Tissue culture techniques are developed as an alternative strategy to produce active secondary metabolites. Fungal elicitation with a combination of tissue cultures optimization is effective strategy to enhance biologically active compounds. Callus cultures of Narcissus tazetta var. italicus (Ker-Gawler) Baker were prepared from bulb explants. They were cultured on a modified Murashige and Skoog medium, supplemented with 3% sucrose, 3mgl-1 naphthalene acetic acid (NAA) and1.5mg l-1 benzyl adenine (BA). Five factors included: fungal growth medium, fungal elicitor concentration, fungal age, exposure time, and callus age were optimized to improve alkaloids production. Culture filtrate of Fusarium sporotrichioides Sherbakoff isolated from the rhizosphere of N. tazetta var. italicus was used as a biotic elicitor. Elicitor of F. sporotricoides, grown on Potato Dextrose broth, stimulated alkaloids production by calli (23.4 mg. g-1dry cell) more than that grown on other media. Elicitor concentrations above 20% enhanced alkaloid accumulation significantly particularly at 80% (32.3 mg. g-1dry cell). Fungal ageing was accompanied by a progressive increase in alkaloid contents of calli. Elicitors prepared from older fungal cultures were effective in stimulating calli growth and alkaloid production more than younger cultures. Alkaloids were increased by increasing exposure time. After 15 days exposure time, there was an increase in alkaloid

Speed Breeding: A Powerful Innovative Tool in Agriculture

المجلة: Innovative Techniques in Agriculture

سنة النشر: 2018

تاريخ النشر: 2018-01-13

Speed breeding technology is a new innovation inspired by NASA's experiments to grow wheat in space, which involved using continuous light on wheat and triggered early plant reproduction and can enormously diminish the length of the breeding cycles of many crops. This innovation which have been developed by Australian scientists to accelerate the genetic gain and they confirmed that it is a powerful tool to accelerate crop research and breeding. It can boost the production of wheat crop by up to three times and enables six generations of the crop to be produced each year by using controlled temperature and extended photoperiod, thus accelerating development of inbred lines. They used supplemental lighting in a glasshouse environment that allowed rapid generation cycling through single seed descent and potential for adaptation to larger-scale crop improvement programs. There has been a lot of interest globally in this technique as it is one of many examples of the impact of space age research on the lives of the people on Earth. The adaptation of space farming and space age plant breeding technologies will be the inspiration for many other new innovations in agriculture and it will light the way for future crops in the forthcoming years here on planet Earth. The interest for higher yield is escalating because of a blasting human population, and the world needs to produce 60-80% more food by 2050 to sustain its nine billion people, however, yield development in numerous zones is stagnating due, to a limited extent, to an unpredictable climate change. To give the fundamental yield progression, more effi

Evaluation of Genetic Polymorphisms in CD36 Gene and Other Co-factors in Al-Baha Population with Myocardial Infarction Disease

المجلة: Merit Research Journal of Microbiology and Biological Sciences

سنة النشر: 2015

تاريخ النشر: 2015-11-01

To evaluate the role of the genetic mutations of cd36 gene in development of myocardial infarction and to build data for the risk factors for the disease among Saudi population of Al- Baha District. An association case-control study was conducted between May 2014 and April 2015 to investigate the role of CD36 deficiency in the development of MI among Saudi population at Al- Baha District. Cases with MI were enrolled in the study after giving an informed consent to participate. Blood sample was drawn for measurement of serum markers and DNA extraction. Individuals without clinical evidence of (CAD) were enrolled as Controls. Mutations in CD36 gene among patients and controls were screened by polymerase chain reaction (PCR) and restricted fragment length polymorphism (RFLP). SPSS, T- test, Chi-square test and Fisher’s exact test were used for statistical analysis. P<0.05 values were considered as significant. Myocardial infarction (MI) is considered as a leading cause of death around the world. An association case-control study of Saudi patients with MI (n=77, M/F=62/15, average age 64.12±13.6) and their normal controls (n=31, M/F=21/10, average age 58±20.3) was conducted between May, 2014 and April, 2015 in Saudi population of Al-Baha area, KSA, to investigate the role of CD36 deficiency and other co-factors in the development of MI. Smoking, high blood pressure, heart failure and diabetes were found to be associated with MI and represent as risk co-factors in predisposition to the disease and their Odd Ratio (O.R) were 5.8, 3.91, 3.91 and 1.6 respectively. The single nucleotide polymorphism (478 C›T, Pro9

Arab countries need better GMO detection systems

المجلة: Sci.dev.

سنة النشر: 2014

تاريخ النشر: 2014-06-01

Genetic engineering has been — and continues to be — marketed as humanity’s solution to hunger and deadly disease. It was imposed upon humans under the guise of opening boundless horizons for saving humanity. It was also touted as being technologically capable of producing huge amounts of food that would satisfy billions of hungry people, with no need for pesticide use and with reduced need for fertilisers, while at the same time prolonging the expiration date of products, thus facilitating their trade and storage. http://www.scidev.net/global/gm/opinion/Middle-East-GMO-English.html

Enhancement of alkaloids production in tissue culture of Narcissus tazetta var. italicus I: Effect of growth regulators and fungal elicitors. Journal of Agricultural Technology.

المجلة: International Journal of Agricultural Technology

سنة النشر: 2014

تاريخ النشر: 2014-01-01

The objective of this study is to improve total alkaloid contents of Narcissus tazetta var. italicus tissue cultures by using different types of growth regulators and fungal elicitors. Seven and six species belong to four genera were isolated from both rhizosphere and bulbs of N. tazetta var. italicus, respectively. Aspergillus niger, A. ochraceus, A. oryzae, Fusarium oxysporum, F. sporotrichioides, Penicillium chrysogenum and Trichoderma viride were isolated from the rhizosphere. On the other hand, A. flavus, A. niger, F. oxysporum, F. semitectum, P. chrysogenum and T. viride were isolated from the bulbs. Explants derived from bulbs and leaves of N. tazetta var. italicus were cultured on Murashige and Skoog medium (MS) supplemented with different combinations and concentrations of plant growth regulators. Calli derived from both bulb and leaf explants, and bulbs derived from bulb explants, had maximum growth and highest amount of total intracellular alkaloids, when cultured on MS4, MS6 and MS2 media, respectively (without the addition of fungal elicitor). MS4 contained benzyl adenine (BA 1.5 mg/l) and naphthalene acetic acid (NAA 3 mg/l), MS6, contained BA (2 mg/l) and indole acetic acid (IAA 0.5 mg/l), whereas, MS2 contained BA (2 mg/l) and indole butyric acid (IBA 1mg/l), in addition to the other constituents of MS medium. The isolated fungi were screened for their potentiality to elicit alkaloids production. F. sporotrichioides culture filtrate was the most effective elicitor in enhancing growth and total intracellular alkaloids production when incubated on MS4 medium for 10 days with 4 week old callus cultures of N. tazetta var. italicus.

CLONING AND EXPRESSION ANALYSIS OF BETAINE ALDEHYDE DEHYDROGENASE FROM Pseudomonas fluorescens

المجلة: Egyptian Journal of Genetics And Cytology

سنة النشر: 2011

تاريخ النشر: 2016-01-12

Pseudomonas fluorescens are gramnegative rod shaped bacteria that improve plant health and nutrition (Rodriguez and Pfender, 1997; de Bruijn et al., 2007). Most studies describe P. fluorescens as a psychrotrophic bacterium unable to grow at temperatures greater than 32C and therefore as an avirulent bacterium to humans (Naseby et al., 2001). It has many positive effects on the plant health as it enhances the production of plant growth hormones, it boosts the suppression of pathogens (especially fungi and oomycetes), and it directs the elicitation of plant defense responses (Haas and Defago, 2005).

Elicitation of alkaloids by biotic and abiotic stress factors in Catharanthus roseus

المجلة: Egyptian Journal Of GENETICS AND CYTOLOGY

سنة النشر: 2011

تاريخ النشر: 2011-07-01

Catharanthus roseus L. (G) Don. (Apocynaceae) is an important medicinal plant as it is the sole source of vincristine and vinblastine that are used against a variety of cancers. The objective of the present study was to maximize the alkaloid production from C. roseus suspension cultures by optimizing the growth regulators and amending some stress factors in MS medium. The optimum growth media for hypocotyls and cotyledons derived calli was MS4 (containing 2,4-D and BA (0.5:0.5 mg l -1 )) while MS6 (containing NAA and BA (1:1 mg l -1 )) was the optimum for leaves derived calli. Mycofloral surveys of phylloplane and stemplane of C. roseus revealed isolation of 116 fungal species (33 from phylloplane and 83 from stemplane) allover 3 months. Alternaria alternata (the cause of leaf spots in C. roseus) was the most dominant in both localities and selected for elicitation in suspension culture. The three stress factors (A. alternata elicitor, VaSO4 and KCl) enhanced alkaloid production by C. roseus suspension cultures either tested singly or in combinations. Among the 19 experimental combinations MS4 + mixture (1) of stress factors (100 mg / g dry cells A. alternata elicitor, 2.75 mg / g dry cells VaSO4 and 275 mg / g dry cells KCl) was the optimum production media and resulted in promising induction of alkaloids from hypocotyls suspension cultures of C. roseus. HPLC analysis indicated the presence of both extracellular and intracellular vincristine and vinblastine in the suspension cultures of C. roseus. Vincristine quantity was much higher than vinblastine either in extracellular or intracellular samples.

Structural Analysis of Toxic Waste-Induced Chromosome Aberrations by Atomic Force Microscopy

المجلة: Journal of Biotechnology

سنة النشر: 2010

تاريخ النشر: 2010-11-01

Structural Analysis of Toxic Waste Induced Chromosome Aberrations by Atomic Force Microscopy

Advances in Watermelon Breeding In: Hybrid Vegetable Development

المجلة: Journal of New Seeds

سنة النشر: 2005

تاريخ النشر: 2005-02-01

The continuous discovery of best possible combiners and their outcome has replaced the superior varieties by hybrids in watermelon. Nowadays several types of watermelons are being marketed-some are having red flesh, some with yellow, some with white flesh. Even with the differences in its shape and size, some are round, some are oval, some are square. Some are with seeds some are seedless. This all happened because of the efforts of crazy mind and fast changing market needs. The introduction of new watermelon genes and marker genes have equipped us to deal with pest and pathogens. Beyond that, using the genes of a rootstock of a related cucurbit, we can combat soil pests as well as adverse environmental conditions. Use of male sterility can reduce the cost of hybrid seed. Seed production requires good cultural practices and timely harvest. Triploid hybrid seed production varies considerably.

Callus Induction and Plants Regeneration from calli of different explants of melon (Cucumis melo L., cv. Ananas El Dokki and cv. Shahd El Dokki).

المجلة: Egyptian Society of Genetic Engineering, 5th Annual Meeting Report, NRC, Egypt.

سنة النشر: 1994

تاريخ النشر: 1994-01-01

Kapiel, T. Y. and Ali, A.M.M. (1994). Callus Induction and Plants Regeneration from calli of different explants of melon (Cucumis melo L., cv. Ananas El Dokki and cv. Shahd El Dokki). Egyptian Society of Genetic Engineering, 5th Annual Meeting Report, NRC, Egypt.

The Production of Cantaloupe (Cucumis melo L.) Salt-Resistant Calli and Cell lines through Genetic Engineering Techniques

المجلة: M.Sc. Thesis, Cairo University, Egypt

سنة النشر: 1996

تاريخ النشر: 1996-01-06

Kapiel, T. Y. (1996). The Production of Cantaloupe (Cucumis melo L.) Salt-Resistant Calli and Cell lines through Genetic Engineering Techniques, M.Sc. Thesis, Cairo University, Egypt.

Induced Mutation in Tissue Culture, (A commentary Article)

المجلة: Plant-TC Listserv, University of Minnisota

سنة النشر: 1997

تاريخ النشر: 1997-01-01

Kapiel, Y. K. (1997). Induced Mutation in Tissue Culture, (A commentary Article), Plant-TC Listserv, University of Minnisota, http://www.agro.agri.umn.edu/plant-tc.

Salt Tolerance in Melon Tissue Cultures. I. Selection of NaCl tolerant line of cultured cells. Egyptian Society of Genetic Engineering

المجلة: Egyptian Society of Genetic Engineering, 8th Annual Meeting Report, NRC, Egypt.

سنة النشر: 1997

تاريخ النشر: 1997-01-01

Kapiel, T. Y. and Ali, A.M.M. (1997). Salt Tolerance in Melon Tissue Cultures. I. Selection of NaCl tolerant line of cultured cells. Egyptian Society of Genetic Engineering, 8th Annual Meeting Report, NRC, Egypt.

Salt Tolerance in Melon Tissue Cultures. II. Induction of NaCl tolerant mutants through genetic engineering techniques.

المجلة: Egyptian Society of Genetic Engineering, 8th Annual Meeting Report, NRC, Egypt.

سنة النشر: 1997

تاريخ النشر: 1997-01-01

Kapiel, T. Y. and Ali, A.M.M. (1997). Salt Tolerance in Melon Tissue Cultures. II. Induction of NaCl tolerant mutants through genetic engineering techniques. Egyptian Society of Genetic Engineering, 8th Annual Meeting Report, NRC, Egypt.

Rapid Micropropagation and Grafting of Watermelon (Citrullus lanatus) Cultivar

المجلة: The First International Conference, In Egypt, On Plant Tissue Culture and Its Application. 145-159

سنة النشر: 1999

تاريخ النشر: 1999-01-01

Nasr, M.I.; Ibrahim, I.A.; Habib, H.M. and Kapiel, T.Y. (1999). Rapid Micropropagation and Grafting of Watermelon (Citrullus lanatus) Cultivar. The First International Conference, In Egypt, On Plant Tissue Culture and Its Application. 145-159.

Determination of the effects of slice thickness and location on shoot bud induction from immature cotyledon explants of triploid (seedless) Watermelons.

المجلة: Twelfth Annual Research Colloquium, GSSM, SC, USA

سنة النشر: 2001

تاريخ النشر: 2001-01-01

Permenter, C.; T. Y. Kapiel and B. Rhodes (2001). Determination of the effects of slice thickness and location on shoot bud induction from immature cotyledon explants of triploid (seedless) Watermelons. Twelfth Annual Research Colloquium, GSSM, SC, USA.

Rapid Micropropagation of Watermelon

المجلة: http://www.kitchenculturekit.com/Index.htm

سنة النشر: 2001

تاريخ النشر: 2001-01-01

Kapiel, T. (2001). Rapid Micropropagation of Watermelon, http://www.kitchenculturekit.com/Index.htm.

Production of autopolyploid watermelons in tissue culture using molecular and cytogenetic techniques.

المجلة: Ph.D. Thesis, Cairo University, Egypt

سنة النشر: 2004

تاريخ النشر: 2004-01-06

Kapiel, T. (2004). Production of autopolyploid watermelons in tissue culture using molecular and cytogenetic techniques. Ph.D. Thesis, Cairo University, Egypt.

Novel Approach for the Accelerated Production of Triploid (Seedless) Watermelon.

المجلة: Proceed. Int. Conf. Eng. & Appl. (April 8-11 Sharm Elsheik, Egypt).

سنة النشر: 2004

تاريخ النشر: 2004-01-01

Mahmoud I. Nasr, Hala M. Habib, Ibrahim A. Ibrahim and Tarek Y. Kapiel (2004). Novel Approach for the Accelerated Production of Triploid (Seedless) Watermelon. Proceed. Int. Conf. Eng. & Appl. (April 8-11 Sharm Elsheik, Egypt).

In Vitro Induction of Autotetraploid Watermelons Using Colchicine and Four Dinitroaniline Compounds.

المجلة: Proceed. Int. Conf. Eng. & Appl. (April 8-11 Sharm Elsheik, Egypt).

سنة النشر: 2004

تاريخ النشر: 2004-01-01

Mahmoud I. Nasr, Hala M. Habib, Ibrahim A. Ibrahim and Tarek Y. Kapiel (2004). In Vitro Induction of Autotetraploid Watermelons Using Colchicine and Four Dinitroaniline Compounds. Proceed. Int. Conf. Eng. & Appl. (April 8-11 Sharm Elsheik, Egypt).

Advances in Watermelon Breeding

المجلة: Journal of New Seeds

سنة النشر: 2004

تاريخ النشر: 2004-01-01

Kapiel, T.; Rhodes, B.; Dane, F. and Zhang, X. (2004). Advances in Watermelon Breeding. Journal of New Seeds, 6(4): 289- 321.

Advances in Watermelon Breeding In: Hybrid Vegetable Development

المجلة: In: Hybrid Vegetable Development. Edited by P. K. Singh, S. K. Dasgupta, and S. K. Tripathi, Published by Haworth Press, Incorporated, USA.

سنة النشر: 2005

تاريخ النشر: 2005-01-01

Kapiel, T.; Rhodes, B.; Dane, F. and Zhang, X. (2005). Advances in Watermelon Breeding In: Hybrid Vegetable Development. Edited by P. K. Singh, S. K. Dasgupta, and S. K. Tripathi, Published by Haworth Press, Incorporated, USA.

Structural Analysis of Toxic Waste-Induced Chromosome Aberrations by Atomic Force Microscopy

المجلة: J. Biotechnol

سنة النشر: 2010

تاريخ النشر: 2010-01-01

Kapiel, T.Y.S., Narguess Hossameldin Marei, Kareem Dorri Zaki, Ahmed M. Osman, Eman Galal Zakaria, Menat-tallah Elserafy, Ahmed M. Yara (2010). “Structural Analysis of Toxic Waste-Induced Chromosome Aberrations by Atomic Force Microscopy”. J. Biotechnol. 150S (2010) S435]