Behrouz Harighi

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In this study, antagonistic effects of 6 isolates of Pseudomonas and 6 isolates of Bacillus genera isolated from rhizosphere of chickpea were evaluated against Fusarium oxysporum f. sp. ciceris as potential biocontrol agents in vitro and in vivo. Fungal inhibition tests were performed using plate assay. Each isolate were tested for the production of(More)
Agrobacterium tumefaciens has homologues of chemotaxis genes of the alpha-subgroup of proteobacteria, which include orf1, orf2, cheY1, cheA, cheR, cheB, cheY2, orf9, and orf10 and organized in one operon [Wright et al. A chemotaxis cluster from Agrobacterium tumefaciens. Gene 1998;220:83-9]. Two mutants of A. tumefaciens were created by in-frame deletions(More)
This study was aimed to investigate the antifungal effect of the crude extracts derived from 37 Iranian plant species against Phytophthora melonis and Pythium aphanidermatum, the causal agents of cucumber root rot and damping off. The crude extracts were obtained using three different solvents; ethanol, methanol and water. The inhibitory effect of these(More)
Bacterial canker is one of the most important diseases of stone fruit trees in various locations of Kurdistan province, Iran. Genetic diversity and evolutionary relationships among 20 fluorescent pseudomonads isolated from stone fruit trees with symptoms similar to bacterial canker were investigated using a polyphasic approach by means of phenotypic(More)
Agrobacterium tumefaciens has a chemtaxis operon, which includes orf1, orf2, cheY1, cheA, cheR, cheB, cheY2, orf9, and orf10. In-frame deletions of cheY1 and cheY2 were constructed and the chemosensory behavior of the mutants was examined on swarm plates and in a chemotaxis assay toward acetosyringone. The cheY2 mutant (C1/delY2) showed impaired chemotactic(More)
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