A5077648886- Allelopathy and phytotoxic interactions
- Plant Parasitism and Resistance
- Berberine and alkaloids research
- Botanical Research and Chemistry
- Plant tissue culture and regeneration
- Plant Stress Responses and Tolerance
- Alkaloids: synthesis and pharmacology
- Seed Germination and Physiology
- Chemical synthesis and alkaloids
- Potato Plant Research
- Phytochemicals and Antioxidant Activities
- Plant and fungal interactions
- Phytochemistry and biological activities of Ficus species
- Soil erosion and sediment transport
- Beetle Biology and Toxicology Studies
- Soybean genetics and cultivation
- Cancer therapeutics and mechanisms
- Plant Pathogens and Resistance
- Plant Molecular Biology Research
- Aeolian processes and effects
- Phytochemical compounds biological activities
- Photosynthetic Processes and Mechanisms
- Genomics, phytochemicals, and oxidative stress
- Agricultural Science and Fertilization
- Plant chemical constituents analysis
Mansoura University
2017-2024
Technische Universität Braunschweig
2017-2024
Cairo University
1992-2016
The low amount of metabolites isolated from natural products is one the challenges preventing their biological evaluation. modulation biosynthetic pathways by stimulating stress-induced responses in plants was proven to be a valuable tool for diversification already known products. Recently, we reported dramatic effect methyl jasmonate (MeJA) on Vinca minor alkaloids distribution. In this study, three compounds identified as 9-methoxyvincamine, minovincinine, and minovincine are successfully...
Alkaloids extracted from mature Vinca minor leaves were fractionated by preparative HPLC. By means of HRMS and NMR data, the main alkaloids identified as vincamine, strictamine, 10-hydroxycathofoline, vincadifformine. Upon treatment with methyl jasmonate (MeJA), pattern composition indole changed extensively. While 10-hydroxycathofoline strictamine concentrations remained unaltered, vincamine vincadifformine levels showed a dramatic reduction. MeJA treatment, four other detected in high...
In this study, the allelopathic properties of Medicago sativa L. (alfalfa) seedling exudates on germination seeds various species were investigated. The compounds responsible for effects alfalfa identified and characterized by employing liquid chromatography ion mobility high-resolution mass spectrometry. Crude inhibited all plant tested. Overall, nine in quantified. most predominant a hyperoside representing flavonoid glucoside, non-proteinogenic amino acid canavanine, two dipeptides, as...
Potato peel may play a mixed blessing role via providing useful and economic compounds, in contrast, it contains very toxic glycoalkaloids.However, massive amounts of potato waste are generated from industrial personal uses.The evaluation the four used bio-modulator responses on was estimated by monitoring chemical contents GC-MS, LC-ESI-MS/MS, reducing sugar, total phenolics, flavonoid as well α-amylase antioxidant activities comparison to control untreated peels.The vitro assay indicated...
This study evaluated the antioxidant and antibacterial properties of methanolic extracts derived from oilseed cakes Lactuca sativa (lettuce), Nigella (black seed), Eruca (rocket), Linum usitatissimum (linseed). Lettuce extract showed highest potential, so it was selected for further investigation. High-performance liquid chromatography (HPLC-DAD) analysis bioassay-guided fractionation lettuce seed cake led to isolation five compounds: 1,3-propanediol-2-amino-1-(3′,4′-methylenedioxyphenyl)...
A pot experiment was conducted at the greenhouse of Soils, Water and Environment Research Institute, Giza, during two winter seasons 2007/2008 2008/2009.The study aimed to evaluate effect different strategies reuse low quality drainage water (drainage water, alternating, blended with Nile water), some, amendments application either soil (gypsum) or irrigation (Ammonium Thio Sulfate ; ATS) small split fertilizers through high rates on both properties wheat crop response salinity.The salinity...
The interaction between salinity and phosphorus nutrition is particularly complex.Plant responses can vary according to many factors.The role of application on the growth mineral composition rice under saline conditions was studied in a solution culture.In this experiment, effect inorganic phosphate (Pi) ionic relations five varieties, varying salt tolerance use efficiency, grown nutrient with without 50 mol m -3 NaCl measured four week trial.The all varieties affected different degrees due...