Document Type

Article

Publication Date

12-20-2013

Journal Title

Standards in Genomic Sciences

ISSN

1944-3277

Keywords

root-nodule bacteria, nitrogen fixation, evolution, lateral gene transfer, integrative and conjugative elements, symbiosis, Alphaproteobacteria

Disciplines

Agronomy and Crop Sciences | Plant Biology

Abstract

Mesorhizobium opportunistum strain WSM2075T was isolated in Western Australia in 2000 from root nodules of the pasture legume Biserrula pelecinus that had been inoculated with M. ciceri bv. biserrulae WSM1271. WSM2075T is an aerobic, motile, Gram negative, non-spore-forming rod that has gained the ability to nodulate B. pelecinus but is completely ineffective in N2 fixation with this host. This report reveals that the genome of M. opportunistum strain WSM2075T contains a chromosome of size 6,884,444 bp, encoding 6,685 protein-coding genes and 62 RNA-only encoding genes. The genome contains no plasmids, but does harbor a 455.7 kb genomic island from Mesorhizobium ciceri bv. biserrulae WSM1271 that has been integrated into a phenylalanine-tRNA gene.

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Digital Object Identifier (DOI)

https://doi.org/10.4056/sigs.4538264