Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.

Overview

Proteome nameBradyrhizobium sp. BTAi1
Proteins7,567
Proteome IDiUP000000246
StrainBTAi1 / ATCC BAA-1182
Taxonomy288000 - Bradyrhizobium sp. (strain BTAi1 / ATCC BAA-1182)
Last modifiedFebruary 4, 2017
Genome assembly and annotationi GCA_000015165.1 from ENA/EMBL
Pan proteomei This proteome is part of the Bradyrhizobium sp. (strain ORS 278) pan proteome (fasta)

Bradyrhizobium sp. strain BTAi1, a photosynthetic bacterium, nodulates the stems of the aquatic legume Aeschynomene indica, and was isolated in North America. Group I Bradyrhizobium form nodules on all stem-nodulating Aeschynomene species, and are known to contain the nodulation-inducing nodABC genes, whereas group II strains (among them strain BTAi1) are restricted to a few species. The photosynthetic Bradyrhizobia form a separate phylum and may be closer to Rhodopseudomonas than to non-photosynthetic Bradyrhizobia. Unlike the closely related Bradyrhizobium sp. strain ORS278 (BRASO), strain BTAi1 has a 230kb plasmid. There are no nod, nif or fix genes in BTAi1, which therefore must initiate nodulation in a quite different fashion than the nod-containing nitrogen-fixing bacteria. Despite this absence, nodules on Aeschynomene synthesize leghemoglobin, have nitrogenase activity and transfer fixed N2 into the plant host. Interestingly, these photosynthetic Bradyrhizobia naturally associate with a wild rice species, Oryza breviligulata that co-inhabits some tropical marshes of Africa with Aeschynomenes. Association with BTAi1 increases production slightly. Strain BTAi1 produces the carotenoid spirilloxanthin (supplementary information from PubMed 11097925).

Componentsi

DownloadView all proteins
Component nameGenome Accession(s)
Proteins
Chromosome7351
Plasmid pBBta01223