Journal
SYSTEMATIC AND APPLIED MICROBIOLOGY
Volume 32, Issue 1, Pages 8-16Publisher
ELSEVIER GMBH
DOI: 10.1016/j.syapm.2008.11.003
Keywords
Mesorhizobium; Alhagi sparsifolia; Phylogeny; Housekeeping genes; Nodulation genes; Lateral gene transfer
Categories
Funding
- National Science Foundation of China [30470040, 30670372, 2005DKA21201-14]
- UK Natural Environment Research Council [NE/B505046/1]
- Natural Environment Research Council [NE/B505038/1] Funding Source: researchfish
Ask authors/readers for more resources
We isolated 33 nodule bacteria from the legume Alhagi sparsifolia growing in the desert of northwest China. They fell into three groups by restriction analysis of their rrs (small subunit ribosomal RNA) genes, and these, together with dnaK and dnaJ genes, were sequenced from representative isolates to assess their taxonomic position by phylogenetic analysis. The bacteria in each group belonged to different lineages that might represent three different new Mesorhizobium species, two of which form a novel clade very distinct from other species in the genus. Most A. sparsifolia symbionts harboured closely related nodA and nodC genes forming new lineages. The presence of these closely related symbiosis genes in various genomic backgrounds and the incongruence observed between the different gene phylogenies indicate a history of horizontal gene transfer of symbiosis genes between the A. sparsifolia symbionts. (C) 2008 Elsevier GmbH. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available