Abstract Nine isolates of Trichoderma were collected from Assiut Governorate, Egypt, as leaf surface and endophytic fungi associated with onion flora stalks. Four identified harzianum , while five belonging to longibrachiatum . The antagonistic activity these against purple blotch pathogen Alternaria porri was studied in vitro using dual culture assay. All tested showed mycoparasitic competitive capability the mycelial growth A. Mycoparastic manifested morphologically by overgrowth upon...

Mycogenic synthesis of silver nanoparticles (AgNPs) was carried out in the present investigation using an aqueous extract endophytic non-pathogenic Alternaria solani F10 (KT721914). The mycosynthesized AgNPs were characterized by means spectroscopic and microscopic techniques. surface plasmon resonance found at 430 nm confirmed formation stable for several weeks room temperature. Also, results revealed spherical monodispersed with average size 14.8 ± 1.2 nm. FT-IR spectrum suggested that...

This study aimed to evaluate the efficacy of endophytic bacterium control common bean rust disease under greenhouse conditions. Endophytic Pseudomonas putida ASU15 was isolated from fresh asymptomatic bean, identified using biochemical and molecular characteristics. In vitro, inhibitory effect different concentrations P. (1 × 104, 1 105 106), as well fungicide ortiva (0.01%) on uredospores germination Uromyces appendiculatus were tested water agar medium. The concentration showing highest...

The pollution of aquatic bodies by synthetic dyes is regarded as one the most significant environmental issues, which has prompted greater research into effective and sustainable removal techniques. Even though there have been major efforts in previous few decades, more study still necessary to fully examine long-term performance usable applicability adsorbents different adsorption techniques for dye. In present study, a brown marine macroalga Sargassum muticum was used an biosorbent crystal...

Abstract Background Purple blotch disease is a devastating disease, resulting in significant yield losses onion. Application of synthetic fungicides rapid approach for the control this but extensive use results resistance development pathogen. Thus, it mandatory to explore alternative approaches overcome fungicide challenges. The present study focused on sustainable biocontrolling by using biocontrol yeast. objective was develop management strategy that offers an environmentally acceptable...

Although cyanobacteria are recognized as renewable sources of biomass for bioactive compounds, they have received little attention potential biocontrol agents foliar plant diseases. The purpose this study was to evaluate the fungicidal efficacy cyanobacterial extracellular products against Alternaria porri, which causes onion purple blotch disease, in vitro and under greenhouse conditions. Among tested (Anabaena oryzae, Arthrospira sp., Nostoc minutum, N. muscorum Oscillatoria sp.),...

The present investigation aimed to isolate the causative agents of onion purple blotch and Stemphylium blight diseases evaluate efficacy certain plant extracts against two identified pathogens, in vitro under greenhouse condition. Fourteen isolates S. vesicarium Alternaria porri were tested for pathogenicity. results indicated that all able produce symptoms with different degrees severity ranging from 10.42 81.25%. A. No. 6022 caused highest disease (81.25%), while 6003 was best one out 14...

Abstract One hundred and twenty‐nine isolates of Trichosporon jirovecii were isolated from the melanized exoskeleton as well eyestalks, gills, muscle haemolymph red swamp crayfish ( Procambarus clarkii ) collected River Nile, during summer 2015. Isolates similar morphologically, biochemically genetically. Also, random amplified polymorphic DNA (RAPD) analysis exhibited no polymorphism among tested isolates. Virulence factors such chitinase, protease, lipase activities biofilm formation...

This study aims to evaluate the correlation between fungi causing paint deterioration and air contamination in Assiut University hospital give a complete picture for fungal quantity spectrum. Seventeen species were isolated from 15 samples of deteriorated water-based collected hospitals. Chaetomium globosum was most common paint-deteriorating species, followed by Alternaria alternata, Aspergillus parasiticus, Penicillium oxalicum Setosphaeria rostrata. Direct examination confirmed ability...

Objective: This present study aimed to the effect of some bioagents against Stemphylium vesicarium in vitro and under greenhouse conditions.Materials Methods: The isolate used this was recovered from a diseased onion Assiut Governorate (Egypt) experiments biocontrol disease were carried out condition at University.Data analyzed using one-way ANOVA with SPSS 10.0 software program.Means compared by Duncanʼs multiple tests statistical significance determined 5% level.Results: After preliminary...

The goal of this study was to characterize diversity fungal biota in soil, roots and green leaves onion plant. Seventy- nine species belonging 32 genera were isolated from soil (29 72 species), rhizosphere (25 52), rhizoplane (24 38), phyllosphere (17 41) phylloplane 35) on PDA medium at 19º 28ºC. number higher than those leaves, while the surface (rhizosphere) or (phyllosphere) adhering (rhizoplane) (phylloplane). Aspergillus (A. niger A. terreus), followed by Penicillium (P. funiculosum P....

A simple new green method for the synthesis of silver nanoparticles (AgNPs) using anti-oxidant compound curvularin isolated from endophytic fungus Epicoccum nigrum ASU1 is reported first time in this article. The present work describes a one-step functionalization AgNPs as reducing and stabilizer agent. capped were characterized by UV-vis spectroscopy, Fourier transform infrared (FT-IR) X-ray diffraction (XRD), selected area electron (SAED), energy dispersive spectroscopy (EDX),...

The highly cytotoxic macrocyclic trichothecene Isororidin A (C 29 H 40 O 9 ) was isolated from the fungus Myrothesium verrucaria endophytic on wild medicinal plant `Datura' ( Datura stramonium L.) and characterized by one- (1D) two-dimensional (2D) NMR spectroscopy. three-dimensional structure of has been confirmed X-ray crystallography at 0.81 Å resolution crystals grown in orthorhombic space group P 2 1 , with one molecule per asymmetric unit. is epimer previously described (by...