A genetically and functionally diverse group of non-diazotrophic Bradyrhizobium spp. colonizes the root endophytic compartment of Arabidopsis thaliana.

ABSTRACT:

Background

Diazotrophic Bradyrhizobium spp. are well known for their ability to trigger nodule formation on a variety of legume species. In nodules, Bradyrhizobium utilizes plant-derived carbohydrates in exchange for fixed nitrogen. The genes essential for the nodulation and nitrogen-fixation trait are clustered in a genomic region, which is known as the 'symbiotic island'. Recently, novel non-diazotrophic Bradyrhizobium spp. have been found to be highly abundant in soils, suggesting that these species can also have a 'free-living' life history. However, whether non-diazotrophic Bradyrhizobium spp. can live in association with plants remains elusive.

Results

In this study, we show that Bradyrhizobium spp. are common root endophytes of non-legume plant species - including Ara

SUBMITTER: Schneijderberg M 

PROVIDER: S-EPMC5896095 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature