A polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method was developed to identify and differentiate genotypes of Rhizoctonia solani anastomosis group 3 subgroup PT (AG-3 PT), a fungal pathogen of potato. Polymorphic co-dominant single-locus PCR-RFLP markers were identified after sequencing of clones from a genomic library and digestion with restriction enzymes. Mu...

Rhizoctonia muneratii ATCC 13247 was capable of catalyzing the conversion of 25-hydroxycholesterol to the 3-oxo-4-ene. Hydroxylation at the 6alpha and 6beta positions with the concomitant 3-oxo-4-ene transformation was also observed. The addition of Triton X-100 to the growth medium immediately before steroid addition selectively prevented the appearance of the respective 6alpha-hydroxylated pr...

The three tested herbicides and fungicides caused significant inhibitory effect on the growth of Fusarium solani Rhizoctonia causal common bean damping-off root-rot diseases compared with control treatment. This inhibition was gradually increased by increasing concentration fungicides. Moreover, fungus F. greatly affected than R. solani. Furthermore, were more efficient in this regard. There de...

A series of multilocus sequence-based nuclear DNA markers was developed to infer the phylogeographical history of the Basidiomycetous fungal pathogen Rhizoctonia solani AG-1 IA infecting rice and soybean worldwide. The strategy was based on sequencing of cloned genomic DNA fragments (previously used as RFLP probes) and subsequent screening of fungal isolates to detect single nucleotide polymorp...

The use of fungi the genus Trichoderma spp. for control plant diseases it has proved to be an important and promising tool, mainly tomato crop production system, however, there are difficulties in establishing bioagent. This work aimed evaluate effect substrate incubation time after inoculation with harzianum damping-off seedlings. experimental design was completely randomized, consisting six t...

A series of novel fused heterocyclic compounds bearing benzo[4,5]imidazo[1,2-d][1,2,4]triazine 4a-4w were designed and conveniently synthesized via the intermediates 2-(halogenated alkyl)-1H-benzo[d]imidazoles 2a, 2b, and 2-((1-(substituted phenyl)hydrazinyl)alkyl)-1H-benzo[d]imidazoles 3a-3g. The structures of all target compounds were characterized by FT-IR, ¹H NMR, 13C NMR, and EI-MS, of whi...

Riad S.R. El-Mohamedy, Plant Pathology Department, National Research Center, Dokki, Giza, Egypt, Hayfa Jabnoun-Khiareddine, and Mejda Daami-Remadi, UR13AGR09, Centre Régional des Recherches en Horticulture et Agriculture Biologique de Chott-Meriem, Université de Sousse, 4042, Chott-Mariem, Tunisia. ________________________________________________________________________ ABSRACT El-Mohamedy, R.S...

Seed decay (rot) and seedling damping-off caused by Rhizoctonia solani are among the most important diseases of cotton which result in the significant yield reduction, application of expensive and harmful chemical fungicides and most importantly contamination of soil and agricultural environment. This study was conducted to investigate the possible efficacy of cotton seed delinting in the reduc...

A novel slightly distorted octahedral complex of Cr(III) of norfloxacin (Nor) with the formula [Cr(III)(Nor)(Bipy)Cl2]Cl·2CH3OH has been synthesized hydrothermally in the presence of a N-containing heterocyclic compound 2,2'-bipyridyl (Bipy). The complex was characterized with FT-IR, elemental analysis, UV-visible spectroscopy, and X-ray crystallography. Spectral studies suggest that the Nor ac...