In this study, the treatment of pistachio nuts by Bacillus subtilis UTBSP1, a promising isolate to degrade aflatoxin B1 (AFB1), caused reduce growth Aspergillus flavus R5 and AFB1 content on nuts. Fluorescence probes revealed that cell free supernatant fluid from UTBSP1 affects spore viability considerably. Using high-performance liquid chromatographic (HPLC) method, 10 fractions were separated collected methanol extract fluid. Two showed inhibition zones against A. flavus. Mass...

The Fusarium disease, caused by oxysporum has been observed in different areas of Iran recent years. Current biocontrol studies have confirmed the effectiveness Trichoderma species against many fungal phytopathogens. In this study, effects isolates alone and combination were evaluated F. pathogen. This study shows ability harzianum which had isolated from soil as such, lentil roots compared to three root. Three (T. harzianum) T1, (Trichoderma asperellum) T2, virens) T3, selected base on good...

Size and shape tailored stoichiometric lanthanum phosphate (LaPO4) nanoparticles were synthesized through an aqueous sol-gel technique. The effect of reactant concentration on the size was investigated. Shape evolution explained by spherical diffusion growth mechanism. It observed that reducing from high (100 mol/m3) to very low (0.125 mol/m3), morphology gradually changed long nanorods nanospheres. X-Ray diffraction (XRD) results indicate hexagonal-to-monoclinic phase transformation...

The objective of the present study was to evaluate possible interactions between two potential plant growth-promoting bacteria (PGPB): Azospirillum oryzae strain NBT506 and Bacillus velezensis UTB96. To do this, growth kinetic, biofilm formation, motility, surfactin production, indole-3-acetic acid (IAA) phosphate solubilization enzyme activities strains were measured in monoculture co-culture. maximum biomass production for co-culture about 1011 CFU/ml, confirming that these have grow...

It is known that there correlation between biofilm formation and antagonistic activities of Bacillus subtilis strains; but, the mechanism this not clear. So, effect plant pathogen (Fusarium culmorum) on in a B. strain with high was studied. The expression sinR tasA genes involved studied both single culture bacterium (B) co-culture F. culmorum (FB) using real-time PCR. results revealed gene B FB conditions continuously decreased during period and, after 24 h (B4 FB4), it reached 1% 0.3% at...

The integration of photovoltaic (PV) panels has allowed power distribution systems (PDSs) to regulate their voltage through the injection/absorption reactive power. deployment information and communication technologies (ICTs), which is required for this scheme, made PDS prone various cyber threats, e.g., false data injection (FDI) attacks. To counter these attacks, paper proposes a data-driven framework detect FDI attacks against regulation PV-integrated PDS. Initially, an attack-free system...

Bacillus subtilis UTB1 is known as a biocontrol agent of Aspergillus flavus in pistachio nuts. In order to reduce growth this fungal pathogen greater extent, random mutagenesis using gamma irradiation was applied strain UTB1. We studied the effects different doses (from 100 Gray 3000 Gray) and efficiency 500 selected colonies assessed against A. plate assay. Forty-five exhibited higher inhibition activity compared non-irradiated wild type. Eight mutants out 45 were based on polymorphism...

Plant-growth-promoting rhizobacteria (PGPR) help plants by increasing plant growth and defending them against pathogens pests. There is considerable research supporting the use of these bacteria in management, but number papers that have focused on their effect insect pests control quite few. In this research, we examined ability four native strains Pseudomonas fluorescens to manage cotton aphid, Aphis gossypii, greenhouse-grown cucumbers Iran. The UTPF (University Tehran fluorescens) 68,...

Abstract In the present survey, quorum quenching activity was examined from a biocontrol point of view. Acyl-homoserine lactone (AHL) degrading bacteria were isolated tomato rhizosphere using two standard bioreporter strains and different synthetic AHLs then identified according to 16S rDNA sequences. Five isolates capable inactivating both short long 3oxo-substituted showed high similarity with genera Bacillus, Microbacterium Arthrobacter, thereby Bacillus cereus U92 determined as most...