Inoculation of paddy rice with Azospirillum brasilense and Pseudomonas fluorescens: Impact of plant genotypes on rhizosphere microbial communities and field crop production

► Rice genotypes have shown differences in their PGPB inoculation responses. ► Inoculation reduced the percentage of vain grains of the three rice cultivars. ► Culturable microbial communities could differentiate rice rhizospheres. ► T-RFLP analysis of nifH gene differentiated inoculation treatments and rice genotypes. ► Rice genotypes had a strong effect on the associated microbial community.