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Genotypic characterization of Rhizob...

Schmidt, Leigh Shirley.

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Genotypic characterization of Rhizobia nodulating adjacent plants of Lupinus bicolor and Lotus purshianus.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Genotypic characterization of Rhizobia nodulating adjacent plants of Lupinus bicolor and Lotus purshianus./
作者:	Schmidt, Leigh Shirley.
面頁冊數:	39 p.
附註:	Source: Masters Abstracts International, Volume: 43-01, page: 0156.
Contained By:	Masters Abstracts International43-01.
標題:	Biology, Microbiology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1420859
ISBN:	0496256076

Genotypic characterization of Rhizobia nodulating adjacent plants of Lupinus bicolor and Lotus purshianus.
Schmidt, Leigh Shirley.

Genotypic characterization of Rhizobia nodulating adjacent plants of Lupinus bicolor and Lotus purshianus. - 39 p.

Source: Masters Abstracts International, Volume: 43-01, page: 0156.

Thesis (M.S.)--California State University, Fresno, 2004.

The population structure, host specificity, and long term persistence was analyzed of 118 Bradyrhizobium spp. isolates infecting root nodules of California native legumes. Lotus purshianus and Lupinus bicolor were collected in both 1983 and 2003, as paired plants growing within 15 cm of each other, in the central Sierra Nevada foothills. The Bradyrhizobium spp. were characterized using 16S--23S IGS RFLP analysis, 16S ARDRA, and REP-PCR fingerprinting methods, along with partial 16S rDNA sequence comparisons. Two distinct genotypes of Bradyrhizobium spp. were found that have apparently persisted over twenty years, but with modifications. Both genotypes were able to infect the two host plant genera: additionally a significant preference between Lotus purshianus and Cluster 1 from 2003 was observed at one site. Both 2003 clusters were differentially distributed across sampling sites, suggesting that environmental factors external to the symbiosis are more important than partner choice in structuring the Bradyrhizobium spp. population.

ISBN: 0496256076Subjects--Topical Terms:

1017734
Biology, Microbiology.

Genotypic characterization of Rhizobia nodulating adjacent plants of Lupinus bicolor and Lotus purshianus.
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502 $a Thesis (M.S.)--California State University, Fresno, 2004.
520 $a The population structure, host specificity, and long term persistence was analyzed of 118 Bradyrhizobium spp. isolates infecting root nodules of California native legumes. Lotus purshianus and Lupinus bicolor were collected in both 1983 and 2003, as paired plants growing within 15 cm of each other, in the central Sierra Nevada foothills. The Bradyrhizobium spp. were characterized using 16S--23S IGS RFLP analysis, 16S ARDRA, and REP-PCR fingerprinting methods, along with partial 16S rDNA sequence comparisons. Two distinct genotypes of Bradyrhizobium spp. were found that have apparently persisted over twenty years, but with modifications. Both genotypes were able to infect the two host plant genera: additionally a significant preference between Lotus purshianus and Cluster 1 from 2003 was observed at one site. Both 2003 clusters were differentially distributed across sampling sites, suggesting that environmental factors external to the symbiosis are more important than partner choice in structuring the Bradyrhizobium spp. population.
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