Compatibility of Rhizobial Genotypes within Natural Populations of Rhizobium leguminosarum Biovar viciae for Nodulation of Host Legumes (Record no. 41676)

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control field 20250625124659.0
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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-7345
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245 10 - TITLE STATEMENT
Title Compatibility of Rhizobial Genotypes within Natural Populations of Rhizobium leguminosarum Biovar viciae for Nodulation of Host Legumes
490 0# - SERIES STATEMENT
Volume/sequential designation Applied and Environmental MicroBiology, 69(4), p.2276-2283, 2003
520 3# - SUMMARY, ETC.
Summary, etc. Populations of Rhizobium leguminosarum biovar viciae were sampled from two bulk soils, rhizosphere, and nodules of host legumes, fava bean (Vicia faba)and pea (Pisum sativum)grown in the same soils. Additional populations nodulating peas, fava beans, and vetches (Vicia sativa)grown in other soils and fava beannodulating strains from various geographic sites were also analyzed. The rhizobia were characterized by repetitive extragenomic palindromic-PCR fingerprinting and/or PCR-restriction fragment length polymorphism (RFLP)of 16S-23S ribosomal DNA intergenic spacers as markers of the genomic background and PCR-RFLP of a nodulation gene region, nodD, as a marker of the symbiotic component of the genome. Pairwise comparisons showed differences among the genetic structures of the bulk soil, rhizosphere, and nodule populations and in the degree of host specificity within the Vicieae cross-inoculation group. With fava bean, the symbiotic genotype appeared to be the preponderant determinant of the success in nodule occupancy of rhizobial genotypes independently of the associated genomic background, the plant genotype, and the soil sampled. The interaction between one particular rhizobial symbiotic genotype and fava bean seems to be highly specific for nodulation and linked to the efficiency of nitrogen fixation. By contrast with bulk soil and fava bean-nodulating populations, the analysis of pea-nodulating populations showed preferential associations between genomic backgrounds and symbiotic genotypes. Both components of the rhizobial genome may influence competitiveness for nodulation of pea, and rhizosphere colonization may be a decisive step in competition for nodule occupancy.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Laguerre, G.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Louvrier, P.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Allard, M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Amarger, N.
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Uniform Resource Identifier <a href="https://drive.google.com/file/d/1sSSKpTNAkv0zBuQBx1mBPnc8VLizTUyR/view?usp=drivesdk">https://drive.google.com/file/d/1sSSKpTNAkv0zBuQBx1mBPnc8VLizTUyR/view?usp=drivesdk</a>
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