Study on microbial diversity in the unexplored rhizosphere is important to understand their community structure, biology and ecological interaction with the host plant. This research assessed the genetic and functional diversity of fluorescent pseudomonads [FP] in the green gram rhizophere. One hundred and twenty types of morphologically distinct fluorescent pseudomonads were isolated during ve...

Root colonization by plant-growth-promoting rhizobacteria (PGPR) can be increased depending on the type of rhizosphere. The aim of the present study was to determine fluorescent Pseudomonad diversity in lettuce, parsley, arugula and chicory. Roots from these rhizospheres were sampled at different properties of small commercial producers in Campinas, state of Sao Paulo, Brazil. In the diversity ...

Bacteria that survive under variable conditions possess an assortment of genetic regulators to meet these challenges. The group IV or extracytoplasmic function (ECF) sigma factors regulate gene expression in response to specific environmental signals by altering the promoter specificity of RNA polymerase. We have undertaken a study of PvdS, a group IV sigma factor encoded by Pseudomonas syringa...

the majority of rhizospheric bacteria, particularly fluorescent pseudomonads are able to stimulate plant growth by producing different metabolites including hydrogen cyanide and siderophores. to evaluate the effect of these metabolites on wheat growth, strains of fluorescent pseudomonads were isolated from the wheat rhizosphere in khorasan provinces, identified and studied for production of hyd...