Deakin University
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Complete genome sequence of the Medicago microsymbiont Ensifer (Sinorhizobium) medicae strain WSM419

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journal contribution
posted on 2010-01-01, 00:00 authored by W Reeve, P Chain, G O'Hara, J Ardley, K Nandesena, Lambert BrauLambert Brau, R Tiwari, S Malfatti, H Kiss, A Lapidus, A Copeland, M Nolan, M Land, L Hauser, Y J Chang, N Ivanova, K Mavromatis, V Markowitz, N Kyrpides, M Gollagher, R Yates, M Dilworth, J Howieson
Ensifer (Sinorhizobium) medicae is an effective nitrogen fixing microsymbiont of a diverse range of annual Medicago (medic) species. Strain WSM419 is an aerobic, motile, non-spore forming, Gram-negative rod isolated from a M. murex root nodule collected in Sardinia, Italy in 1981. WSM419 was manufactured commercially in Australia as an inoculant for annual medics during 1985 to 1993 due to its nitrogen fixation, saprophytic competence and acid tolerance properties. Here we describe the basic features of this organism, together with the complete genome sequence, and annotation. This is the first report of a complete genome sequence for a microsymbiont of the group of annual medic species adapted to acid soils. We reveal that its genome size is 6,817,576 bp encoding 6,518 protein-coding genes and 81 RNA only encoding genes. The genome contains a chromosome of size 3,781,904 bp and 3 plasmids of size 1,570,951, 1,245,408 and 219,313 bp. The smallest plasmid is a feature unique to this medic microsymbiont.



Standards in genomic sciences




77 - 86


East Lansing, Mich.

Open access

  • Yes





Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2010, The Authors