استاذ - أستاذ ورئيس قسم الميكروبيولوجى

كلية الزراعة

العنوان: 105 شارع الهلالى - شقه 215- برج عمر بن الخطاب - أسيوط - مصر


2020 | الكلمات المفتاحية Tomato, Tomato brown rugose fr,
First report of Tomato brown rugose fruit virus on tomato in Egypt
In June 2019, leaf samples from hybrid tomato (Solanum lycopersicum cv. Elquds E448) were collected from four regions in Fayoum and Ismailia Governorates, Egypt. Twenty samples were collected from plants with viral symptoms and nine from asymptomatic plants. The diseased samples had mosaics, deformation and necrosis on the leaves , and discoloration and deformations on fruits. إقراء المزيد

2019 | الكلمات المفتاحية Isophthalamide; amino acids; p,
In vitro anticancer potentiality and molecular modelling study of novel amino acid derivatives based on N1,N3-bis-(1-hydrazinyl-1-oxopropan-2-yl) isophthalamide
A series of N1,N3-bis (1-oxopropan-2-yl) isophthalamide-based derivatives 4–16 were prepared and their structures were confirmed by different spectral tools. The cytotoxic potentiality of novel compounds 4–16 was assessed by the MTT assay method on colon, lung and breast tumour cell lines. Compound 5 gave the most significant specificity anticancer activity with safety response on normal cell lines. In vitro enzyme ... إقراء المزيد

2019 | الكلمات المفتاحية amino acid, peptide, Cyclopept,
Design, Synthesis of Novel Cyclic Pentapeptide Derivatives Based on 1,2-Benzenedicarbonyl Chloride with Expected Anticancer Activity
Linear pentapeptide ester, phthaloyl-bis-[glycylglycine]-OMe, 3, have been prepared via coupling of N-phthalic acid or dichloride with glycylglycine ester, which was hydrolyzed to the corresponding acid, phthaloyl-bis-[glycylglycine], 4. Cyclization of tetrapeptide acids to give cyclic pentapeptide esters, acids and hydrazides. A preliminary cytotoxicity evaluation (National Cancer Institute, Cairo, EGYPT), for a representative example, Cyclo-(phthaloyl)-)-bis-[glycylglycine]-L-Lys-OMe (phthaloyl cyclic pentapeptide methyl ester) 5, against ... إقراء المزيد

2017 | الكلمات المفتاحية
Extracellular biosynthesis of silver nanoparticles using Rhizopus stolonifer
Synthesis of silver nanoparticles (AgNPs) has become a necessary field of applied science. Biological method for synthesis of AgNPs by _Rhizopus stolonifer_ aqueous mycelial extract was used. The AgNPs were identified by UV–visible spectrometry, X-ray diffraction (XRD), transmission electron microscopy (TEM) and Fourier transform infrared spectrometry (FT-IR). The presence of surface plasmon band around 420 nm indicates AgNPs formation. The ... إقراء المزيد

2016 | الكلمات المفتاحية Antimicrobial resistance;, ESBL, E. coli, water,
Detection of extended spectrum beta-lactamase producing Escherichia coli on water at Hafr Al Batin, Saudi Arabia
In this study antibiotic resistant Escherichia coli from household water collected in Hafr AlBatin, Saudi Arabia, were characterized by prevalence of extended spectrum betalactamase (ESBL). Samples were collected from drinking and washing water at 12 locations. From the 144 samples obtained, Millipore membrane filters incubated on trypton soya agar plates produced colonies that yielded 34 isolates of E. coli as ... إقراء المزيد

2015 | الكلمات المفتاحية Banana, CMV, CP gene, RT - PCR,
Banana is considered the most important fruit in Egypt. Many clones are grown for the export market, but many indigenous cultivars are produced and consumed locally. Bananas are affected by five viruses (Diekmann and Putter 1996) these are Banana bunchy top virus (BBTV) genus Nanavirus, Banana streak virus (BSV) genus Badnavirus, Cucumber mosaic virus (CMV) genus Cucumovirus, Banana bract mosaic ... إقراء المزيد

2014 | الكلمات المفتاحية Bunyaviridae, FMV,
Occurrence of fig mosaic virus in Egypt
Different patterns of chlorotic to yellowish mottling, mosaic spots and deformation were observed in leaves of field grown figs. The causal virus was identified as Fig mosaic virus (FMV). Electron microscope observations of thin-sectioned tissues from symptomatic leaves or from purified preparations showed double membrane bodies (DMBs) characteristic for FMV particles, which belong to family of Bunyaviridae. FMV infection also ... إقراء المزيد

2013 | الكلمات المفتاحية Saudi, methicillin-resistant Staphylo, systemic review,
Prevalence of methicillin-resistant Staphylococcus aureus in Saudi Arabia: systemic review and meta-analysis
In recent years, methicillin-resistant _Staphylococcucs aureus_ (MRSA) have become a truly global challenge. Systemic review and meta-analysis was performed to summarize the prevalence of MRSA in different regions of Kingdom of Saudi Arabia (KSA). A search of the PubMed, Google and Google Scholar databases for studies published during the period of 1 January 2002 through 31 December 2012 was conducted. ... إقراء المزيد

2013 | الكلمات المفتاحية Common bean, Essential oil, , Fusarium spp, Peppermint, Seed-borne fungi,
Seed borne fungal pathogens associated with common bean (Phaseolus vulgaris L.) seeds and their impact on germination
Seed-borne fungi of bean are a serious problem worldwide causing damping-off and wilt diseases on common bean (Phaseolus vulgaris L.) plants. Several pathogenic fungal were isolated from seed samples collected from commercial markets in Egypt (Pronco, Nebraska, Giza 3, Giza 6 and Tema). Fusarium oxysporum and Fusarium solani were the common fungi isolated from seeds followed by Alternaria sp., Rhizoctonia ... إقراء المزيد

2012 | الكلمات المفتاحية
Molecular characterization of onion yellow dwarf virus (Garlic isolate) with production of virus-free plantlets
Garlic samples showing symptoms of Onion Yellow Dwarf Virus (OYDV) were obtained from previous study and tested by indirect-enzyme linked immunosorbent assay (I-ELISA), transmitted to _Chenopodium amaranticolor _and then confirmed by immunosorbent electron microscopy (ISEM) for the presence of OYDV. PCR primers were used to amplify about 1.1 kb fragment from the viral genome using RT-PCR from infected garlic plants, ... إقراء المزيد