Articles
266 open-access articles · page 12 of 14
ArticlesMolecular, serological and biological characterizations of Potato Leaf Roll Virus in infected potato plants in Egypt, and its effects on plant cell organelles
Dalia G. Aseel, Mahmoud H. Abd El-Aziz, Sanaa A. Riad, Azaa Makhlouf, Gaber I. Fegla, Elsayed E. Hafez
Potato Leaf Roll Virus (PLRV) is one of the most serious viruses infecting potato plant (Solanum tuberosum L.) in Egypt. Indirect Enzyme Linked Immunosorbent Assay (Indirect- ELISA) results revealed that 70 % of the collected samples were infected with P…
1 Aug 2019- Articles
The relationship and relativity between three isolates of Potato virus Y Potyvirus infecting potato (Solanum tuberosum L.) at Alexandria and El-Beheira governorates, northern Egypt
Mahmoud H. Abd El-Aziz, S.I. Behiry, H.A. Younes, Karrar A. Hamza
Potato virus Y (PVY) is a highly pathogenic virus, causing enormous economic losses in potato (S. tuberosum) crop. Three isolates of PVY were obtained from naturally infected potato plants showing mosaic; yellowing and vein necrosis symptoms, during 2017-2018…
1 Aug 2019 - Articles
The effect of Lactobacillus acidophilus as a probiotic against Pseudomonas aeruginosa growth and biofilm formation
Shaimaa A. Elbadri, Marwa S. Fathi, Amira E. Abdel Hamid, Hanaa A. ElGendy
The emergence of antibiotic-resistant biofilm producing microorganisms such as Pseudomonas aeruginosa has pushed efforts to find safe alternatives to antibiotics; such as probiotics. Lactobacilli are one of these promising probiotics, with reported antib…
1 Aug 2019 - Articles
Chemical constituents, antioxidant and antimicrobial activities of Pterygota alata (Roxb.) leaves extracts grown in Egypt
Maha E. Omran, Azza A. Shafei, Sally E. Abdel-Rahman
Overproduction of reactive species and microbial resistance to the existent antibiotics are still great health challenges. The current study aimed to evaluate the antioxidant and antimicrobial activities of Pterygota alata leaves extracts, in addition to…
1 Jun 2019 - Articles
Prevalence of keratinophiic fungi and other dermatophytes from soils of Nnewi in Anambra state, Nigeria
Eze, E.M, Ezebialu, C.U, Unegbu, V.N et al.
This study was carried out to isolate and identify the keratinophilic fungi and other dermatophytes present in soils of Otolo Nnewi, Nnewi north local government area, Anambra state, Nigeria. Eighty soil samples were collected from four habitats (playgro…
1 Jun 2019 - Articles
Purification and cytotoxic assays of four antimicrobial metabolites extracted from Actinomycetes of the soils of Menengai Crater, Kenya
Waithaka, Mwaura, F.B, Wagacha, J.M, Gathuru et al.
The search for antibiotic metabolites is increasing due to drug resistance been witnessed today. This study was conceived to isolate, identify and compare the antimicrobial metabolites yield of four actinomycetes isolated from Menengai crater soil, Kenya…
1 Jun 2019 - Articles
Antitumor efficacy of biosynthesized manganese nanoparticles
Eman Abuheiba, Sawsan M. El-Sonbaty, Nahed Abdel-Samed, Eman Kandil
This study aimed to evaluate the in vitro and in vivo antitumor potential of manganese nanoparticles, in management of hepatocellular carcinoma (HCC) induced in rats. Manganese nanoparticles were biosynthesized using Lactobacillus helveticus cells. In vi…
1 Jun 2019 - Articles
Recombinant human insulin as a solid tumor potential imaging agent: Radio-synthesis and biological evaluation
Gamal Abdelaziz, Motaleb, M.A, Farouk, Adli A. Selim
The aim of this study was to synthesis an imaging agent for tumor targeting. New recombinant insulin analogue was successfully produced from E. coli by recombinant DNA technique, and was well labeled with Technetium-99m with a high radiochemical yield o…
1 Jun 2019 - Articles
Effects of postharvest handling practices on quality of groundnuts and aflatoxin contamination
Dambolachepa, H.B, Muthomi, J.W, Mutitu, E.W et al.
The increased cases of aflatoxin contamination are exacerbated by poor post-harvest management practices, coupled with adverse climatic conditions at harvest and post-harvest stages. This study therefore was carried out to improve safety and quality of g…
1 Jun 2019 - Articles
Detection of Cucumber mosaic cucumovirus in infected cowpea plants (Vigna unguiculata L.) from northern Egypt
Mahmoud Hamdy Abd El-Aziz, Hosny Aly Younes
Cucumber mosaic cucumovirus (CMV) was isolated from naturally infected Cowpea plants (Vigna unguiculata L.) showing different symptoms of mosaic; mottle, dwarfing, and vein clearing, grown at certain locations of Alexandria governorate, Egypt, during the…
1 Apr 2019 - Articles
Molecular identification and pathogenicity of Ralstonia solanacearum isolates collected from north west of Pakistan
Muhammad Junaid, Ayesha Bibi, Musharaf Ahmad, Muhammad Ali, Yousaf Noor
In the tomato commercial growing districts of Khyber Pakhtunkhwa (KP); a province in the north west of Pakistan, multiple comprehensive surveys were conducted during 2012. The main objectives of the current study were to identify the Ralstonia solanacear…
1 Apr 2019 - Articles
Effect of Beta vulgaris root extracts in Rayeb milk on its microbiological, chemical and nutritional composition
Abeer, F. Ahmad, Afaf, O. Ali
The purpose of this study was to examine the use of beetroot (Beta vulgaris L.) extracts as natural colorant and antibacterial additives in Rayeb milk. Citric acid: ascorbic acid (2:1) (BCA) and citric acid (0.2%) (BC) were used as extraction solvents of…
1 Apr 2019 - Articles
Prediction of antigenic epitopes for coat protein of Potato virus Y, Egypt
Seham Abdel-Shafi, Ghaly Mohamed Farouk, Mohamed Taha, Khalid El-Dougdoug
Isolated Potato virus Y Egypt (PVY- EG) obtained from naturally infected potato plants in El-Sharkia, Egypt, was identified by biological, molecular and serological assays. The aims of this study were to predict the antigenic determinants (epitopes) of t…
1 Apr 2019 - Articles
In vitro inhibitory potential of two synthesized fatty amides derivatives against some microbial pathogens
Fatiha Malki, Abdelkader Touati
In the present study, two amide derivatives with long chains; N-cyclohexyloctamide 1 and N- Phenyldodecanamide (dodecanilide) 2 were synthesized. They were tested in vitro for a wide array of antimicrobial activities against; two Gram positive bacteria (…
1 Feb 2019 - Articles
Green synthesis of silver nanoparticles using Portulacaria afra plant extract: characterization and evaluation of its antibacterial, anticancer activities
Taher A. Salaheldin, Ghadir A. El-Chaghaby, Mohamed A. El-Sherbiny
Applications of nanotechnology in different areas of research have expanded over the last years. Silver nanoparticles (AgNPs) have beneficial effects as antimicrobials, antioxidants and/or anticancer. Yet, one of the major limitations of their use was em…
1 Feb 2019DOI 10.21608/nrmj.2019.28107 - Articles
Biodegradation of hydrocarbons by halophilic bacteria isolated from the saltpans of Thoothukudi district, India
Laxmi, Gayathri
Many halophilic microorganisms have evolved unique properties of a considerable biotechnological importance. In this study, two halophilic bacteria were isolated from the solar saltpans of the Thoothukudi district, located in Tamil Nadu, India, and were…
1 Feb 2019 - Articles
Study of population dynamics of Clavibacter michiganensis subsp. michiganensis in exposed and buried crop debris
Ayesha Bibi, Muhammad Junaid, Musharaf Ahmad, Syed Fayaz Ali Shah, Iftikhar Hussain Khalil
The aims of the current work were to determine the effect of burial depth (0, 6, 12 and 18 cm) on the degradation of diseased crop debris, and survival of the debris-borne bacterial inoculum. This study was carried out in two-locations namely; the Agricu…
1 Feb 2019DOI 10.21608/nrmj.2019.28110 - Review
Disease cycle and infection strategies of systemic plant pathogen Botrytis cinerea
Yahaya, S.M, Mardiyya, A.Y, Sakina, S.B et al.
Botrytis cinerea is a ubiquitous filamentous fungal pathogen of a wide range of plant species. This fungus is able to infect all aerial parts of its host plants; where infection may cause enormous damage both during plant growth and in the post-harvest s…
1 Feb 2019DOI 10.21608/nrmj.2019.28106 - Articles
Screening and interaction between pathogens and antagonistic seed-borne fungi, associated with some organic spices and vegetable crops in Tunisia
Ibtissem Ben Salem, Yosra Abdelkhalek, Houssem Nabli, Neji Tarchoun, Naima Boughalleb-M’Hamdi
Seed-borne pathogenic and antagonistic fungi were isolated from the same organic vegetable and spice seeds (carrot, fennel, broad bean, faba bean, and lettuce), and the interaction between them were studied as a part of a biocontrol assay. In vitro dual…
1 Feb 2019DOI 10.21608/nrmj.2019.28109 - Articles
Isolation, characterization, and detection of antibacterial activity of a bioactive compound produced by marine Bacillus sp. MH20 from Suez Bay, Egypt
Mahmoud Saber Kelany, Ehab Aly Beltagy, Maha Abd El-Fattah Khalil, Mohamed Ahmed El-Shenawy, Wagih Abd El-Fattah El-Shouny
This study focused on isolating and identifying a new bacterial strain from marine water and sediments of Suez bay, Timsah Lake, Egypt; capable of producing a bioactive secondary metabolite. Of the 552 bacterial isolates recovered, only 40 of these isola…
1 Feb 2019