Linked Life Data

9542071

Source:http://linkedlifedata.com/resource/pubmed/id/9542071

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1998-4-24
pubmed:databankReference
http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89816, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89817, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89818, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89819, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89820, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89821, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89822, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89823, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89824, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89825, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89826, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89827, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89828, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89829, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89830, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89831, http://linkedlifedata.com/resource/pubmed/xref/GENBANK/U89832
pubmed:abstractText
Medicago ruthenica [(L.) Ledebour] is native to inner Mongolia where rhizosphere samples were collected for the isolation of 106 rhizobial cultures. Besides nodulating the original trap host, the isolates formed nitrogen-fixing symbioses with Phaseolus vulgaris. Only half of the isolates nodulated alfalfa (Medicago sativa), but these did not form nitrogen-fixing symbioses. Rhizobium tropici also formed nitrogen-fixing symbioses with Medicago ruthenica. A total of 56 distinctive multilocus electrophoretic types (ETs) were identified among 94 of the 106 isolates which were analysed for variation in electrophoretic mobility of 12 enzyme loci. One isolate (USDA 1920) possessed a unique ET, while the ETs of the other isolates formed two weakly divergent subgroups approximately equal in size. It was concluded from small subunit rRNA gene sequences of eight isolates of Medicago ruthenica that they belonged to the genus Rhizobium and not to the genus Sinorhizobium which is more commonly associated with Medicago. Genomic similarity, determined from DNA hybridization analysis, between USDA 1920 and the strain representing the remaining isolates (USDA 1844) was lower than 20%. Based upon these observations it was concluded that at least three genomic species of rhizobia form nitrogen-fixing symbioses with Medicago ruthenica. One of these genomic species is R. tropici, another is represented by the single isolate USDA 1920 and the name Rhizobium mongolense is proposed for the third genomic species represented by USDA 1844.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0020-7713
pubmed:author
pubmed:issnType
Print
pubmed:volume
48 Pt 1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
13-22
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Rhizobium mongolense sp. nov. is one of three rhizobial genotypes identified which nodulate and form nitrogen-fixing symbioses with Medicago ruthenica [(L.) Ledebour].
pubmed:affiliation
US Department of Agriculture, ARS, Soybean and Alfalfa Research Laboratory, Beltsville, MD 20705, USA. pberkum@asrr.arsusda.gov
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't