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  Genetic diversity of Rhizobium present in nodules of Phaseolus vulgarisL. cultivated in two soils of the central region in Chile

Junier, P., Alfaro, M., Guevara, R., Witzel, K.-P., & Carú, M. (2014). Genetic diversity of Rhizobium present in nodules of Phaseolus vulgarisL. cultivated in two soils of the central region in Chile. Applied Soil Ecology, 80, 60-66. doi:10.1016/j.apsoil.2014.03.014.

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Junier, Pilar1, Autor           
Alfaro, Marco, Autor
Guevara, Rafael, Autor
Witzel, Karl-Paul1, Autor           
Carú, Margarita, Autor
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              

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Schlagwörter: Rhizobium etli; 16S rRNA; nifH; common bean
 Zusammenfassung: tAlthough Phaseolus vulgaris L. is native from the Americas and is currently cultured in diverse areas, verylittle is known about the diversity of symbiotic nitrogen fixing Rhizobium (mycrosymbiont) in many ofthose cultures. Therefore, the aim of this study was to assess the genetic diversity of Rhizobium presentin nodules of P. vulgaris in the central region of Chile. A method to extract DNA from surface-sterilizednodules was applied to two populations of the same seed variety grown in different fields. The 16SrRNA and nifH genes were amplified directly from the DNA extracted. DGGE analysis and clone librariesshowed a restricted genetic diversity of the microsymbiotic populations that nodulate P. vulgaris. Bothmolecular markers revealed the presence of a microsymbiont closely related to Rhizobium etli in all theplants from the soils studied, indicating that the populations of Rhizobium sp. nodulating P. vulgaris inthe central region of Chile displayed an extremely low genetic diversity. The level of genetic diversityin microsymbiont populations in plants grown in soils with different origin suggested that other factorsrather than the indigenous soil rhizobial populations play a major role in the selection of the symbioticpartner in P. vulgaris.

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Sprache(n): eng - English
 Datum: 2014-02-122013-11-012014-03-272014-08
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1016/j.apsoil.2014.03.014
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Titel: Applied Soil Ecology
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Amsterdam : Elsevier
Seiten: - Band / Heft: 80 Artikelnummer: - Start- / Endseite: 60 - 66 Identifikator: ISSN: 0929-1393 (print)
ISSN: 1873-0272 (online)
CoNE: https://pure.mpg.de/cone/journals/resource/954925568783