The trehalose utilization gene thuA ortholog in Mesorhizobium loti does not influence competitiveness for nodulation on Lotus spp.

摘要: Competitiveness for nodulation is a desirable trait in rhizobia strains used as inoculant. In Sinorhizobium meliloti 1021 mutation either of the trehalose utilization genes thuA or thuB influences its competitiveness root colonization and nodule occupancy depending on interacting host. We have therefore investigated whether ortholog Mesorhizobium loti MAFF303099 also leads to similar competitive phenotype hosts. The results show that M. mutant Ml7023 was symbiotically effective wild type Lotus corniculatus japonicus. gene not induced during infection threads unlike S. meliloti, despite induction by high osmolarity vitro assays.