Abstract:
:Fourteen strains representing 11 Caragana-nodulating Mesorhizobium genomic species were identified as representing Mesorhizobium amorphae, Mesorhizobium huakuii, Mesorhizobium septentrionale and groups related to Mesorhizobium plurifarium, Mesorhizobium temperatum, Mesorhizobium tianshanense and Mesorhizobium mediterraneum by sequencing of the 16S rRNA gene, 16S-23S internal transcribed spacer, partial housekeeping recA gene, and previously performed sodium dodecyl sulfate polyacrylamide gel electrophoresis of proteins and BOX-PCR fingerprinting. Despite their different taxonomic affiliation, highly similar symbiotic genes (>93% similarity for nodC and >91.8% similarity for nifH) were found among the Caragana strains and the three type strains for M. tianshanense, M. temperatum and M. septentrionale. Cross nodulation tests revealed that each of these 14 Caragana mesorhizobia and the three type strains mentioned above could effectively infect each of their original host plants, Caragana microphylla, Glycyrrhiza (host for M. tianshanense type strain) and Astragalus adsurgens (host for M. temperatum and M. septentrionale type strains). These results provide evidence that different Mesorhizobium species can nodulate with Caragana, and they have similar symbiotic genes (probably acquired by a phenomenon of lateral gene transfer) and common host ranges.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Chen WF,Guan SH,Zhao CT,Yan XR,Man CX,Wang ET,Chen WXdoi
10.1111/j.1574-6968.2008.01167.xsubject
Has Abstractpub_date
2008-06-01 00:00:00pages
203-9issue
2eissn
0378-1097issn
1574-6968pii
FML1167journal_volume
283pub_type
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journal_title:FEMS microbiology letters
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:FEMS microbiology letters
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journal_title:FEMS microbiology letters
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