Abstract
“Burkholderia sprentiae” strain WSM5005T is an aerobic, motile, Gram-negative, non-spore-forming rod that was isolated in Australia from an effective N2-fixing root nodule of Lebeckia ambigua collected in Klawer, Western Cape of South Africa, in October 2007. Here we describe the features of “Burkholderia sprentiae” strain WSM5005T, together with the genome sequence and its annotation. The 7,761,063 bp high-quality-draft genome is arranged in 8 scaffolds of 236 contigs, contains 7,147 protein-coding genes and 76 RNA-only encoding genes, and is one of 20 rhizobial genomes sequenced as part of the DOE Joint Genome Institute 2010 Community Sequencing Program.
Highlights
Legumes of the Fabaceae family of flowering plants have the unique capacity to form a symbiotic N2-fixing symbiosis with soil-inhabiting root nodule bacteria (RNB)
Perennial species might be more able to adapt to climate change, though few commercial perennial forage legumes are adapted to the acid and infertile soils encountered in the region [2]
Deep-rooted herbaceous perennial legumes including Rhynchosia and Lebeckia species adapted to acid and infertile soils have been investigated for use in this Australian agricultural setting [2,4,5]
Summary
Legumes of the Fabaceae family of flowering plants have the unique capacity to form a symbiotic N2-fixing symbiosis with soil-inhabiting root nodule bacteria (RNB). The agricultural region of south-west Western Australia contains such impoverished soils and the successful establishment of effective legume-RNB symbioses has been exploited to drive plant and animal productivity in this landscape without the reliance on nitrogenous fertilizer [1,2] This landscape’s rainfall patterns appear to be changing, from a dry Mediterranean-type distribution to a generally reduced annual rainfall with a less predictable distribution [3]. Symbiotaxonomy “Burkholderia sprentiae” strain WSM5005T is part of a cadre of Burkholderia strains that were assessed for nodulation and nitrogen fixation on three separate L. ambigua genotypes (CRSLAM-37, CRSLAM-39 and CRSLAM-41) and on L. sepiaria [5] Representatives of this group of nodule bacteria are generally Nod+ and Fix- on Macroptillium atropurpureum and appear to have a very narrow host range for symbiosis. They belong to a group of Burkholderia strains that nodulate papilionoid forage legumes rather than the classical Burkholderia hosts Mimosa spp. (Mimosoideae) [28]
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