The genome of the versatile nitrogen fixer Azorhizobium caulinodans ORS571.

ABSTRACT:

Background

Biological nitrogen fixation is a prokaryotic process that plays an essential role in the global nitrogen cycle. Azorhizobium caulinodans ORS571 has the dual capacity to fix nitrogen both as free-living organism and in a symbiotic interaction with Sesbania rostrata. The host is a fast-growing, submergence-tolerant tropical legume on which A. caulinodans can efficiently induce nodule formation on the root system and on adventitious rootlets located on the stem.

Results

The 5.37-Mb genome consists of a single circular chromosome with an overall average GC of 67% and numerous islands with varying GC contents. Most nodulation functions as well as a putative type-IV secretion system are found in a distinct symbiosis region. The genome contains a plethora of regulatory

SUBMITTER: Lee KB 

PROVIDER: S-EPMC2443382 | biostudies-literature | 2008 Jun

REPOSITORIES: biostudies-literature