sgebril

Sayed Gebril

Lecturer - Deputy Director of the University Center for Career Development (UCCD) at Sohag

Faculty of agriculture

Address: 416 Faculty of Agriculture , Sohag University, New Campus, New Sohag City, Sohag

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2022 | Keywords Postharvest, bio-stimulants, ,
Bio-Stiumlants Extend Shelf Life and Maintain Quality of Okra Pods
Abstract Abstract Okra (Abelmoschus esculentus L.), a tropical annual crop, is a highly perishable vegetable. Okra pods deteriorate rapidly after harvesting. The pods undergo physical and physiological changes that diminish storability and quality. The purpose of this study was to investigate the effect of bio-stimulants on the storability and quality of okra pods stored at 4 °C and 25 °C ... Read more

2019 | Keywords genetic transformation, alfalf,
Comparison of alfalfa plants overexpressing glutamine synthetase with those overexpressing sucrose phosphate synthase demonstrates a signaling mechanism integrating carbon and nitrogen metabolism between the leaves and nodules
ABSTRACT Alfalfa, like other legumes, establishes a symbiotic relationship with the soil bacteria, _Sinorhizobium meliloti_, which results in the formation of the root nodules. Nodules contain the bacteria enclosed in a membrane-bound vesicle, the symbiosome where it fixes atmospheric N2 and converts it into ammonia using the bacterial enzyme, nitrogenase. The ammonia released into the cytoplasm from the symbiosome is ... Read more

2017 | Keywords transformation, RNAi, Melanin ,
RNAi-mediated down-regulation of a melanin polyketide synthase (pks1) gene in the fungus Slafractonia leguminicola.
ABSTRACT The fungus _Slafractonia leguminicola_, the causal agent of blackpatch disease of legumes produces two mycotoxins slaframine and swainsonine, causing slobbers’ symptoms and locoism of grazing animals, respectively.The genetics of this important fungus is poorly understood. This work aimed to develop a genetic transformation system and evaluate the efficacy of RNA interference (RNAi) in _S.leguminicola_. In this study, _S. leguminicola ... Read more

2015 | Keywords SPS, genetic transformation,
Transgenic alfalfa (Medicago sativa) with increased sucrose phosphate synthase activity shows enhanced growth when grown under N2-fixing conditions.
Abstract Main conclusion Overexpression of SPS in alfalfa is accompanied by early flowering, increased plant growth and an increase in elemental N and protein content when grown under N2-fixing conditions. Sucrose phosphate synthase (SPS; EC 2.3.1.14) is the key enzyme in the synthesis of sucrose in plants. The outcome of overexpression of SPS in different plants using transgenic approaches has ... Read more

2015 | Keywords genetic transformatio, GS, SPS,
Impact of concurrent overexpression of cytosolic glutamine synthetase (GS1) and sucrose phosphate synthase (SPS) on growth and development in transgenic tobacco.
Abstract Main conclusion The outcome of simultaneously increasing SPS and GS activities in transgenic tobacco, suggests that sucrose is the major determinant of growth and development, and is not affected by changes in N assimilation. Carbon (C) and nitrogen (N) are the major components required for plant growth and the metabolic pathways for C and N assimilation are very closely ... Read more