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Plant genotype strongly modifies the structure and growth of maize rhizosphere microbial communities

Aira, Manuel (author)
Gomez-Brandon, Maria (author)
Lazcano, Cristina (author)
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Bååth, Erland (author)
Lund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science
Dominguez, Jorge (author)
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 (creator_code:org_t)
Elsevier BV, 2010
2010
English.
In: Soil Biology & Biochemistry. - : Elsevier BV. - 0038-0717. ; 42:12, s. 2276-2281
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We studied the microbial communities in maize (Zea mays) rhizosphere to determine the extent to which their structure, biomass, activity and growth were influenced by plant genotype (su1 and sh2 genes) and the addition of standard and high doses of different types of fertilizer (inorganic, raw manure and vermicompost). For this purpose, we sampled the rhizosphere of maize plants at harvest, and analyzed the microbial community structure (PLFA analysis) and activity (basal respiration and bacterial and fungal growth rates). Discriminant analysis clearly differentiated rhizosphere microbial communities in relation to plant genotype. Although microorganisms clearly responded to dose of fertilization, the three fertilizers also contributed to differentiate rhizosphere microbial communities. Moreover, larger plants did not promoted higher biomass or microbial growth rates suggesting complex interactions between plants and fertilizers, probably as a result of the different performance of plant genotypes within fertilizer treatments, i.e. differences in the quality and/or composition of root exudates. (c) 2010 Elsevier Ltd. All rights reserved.

Subject headings

NATURVETENSKAP  -- Biologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences (hsv//eng)

Keyword

Organic fertilization
Bacterial growth rate
Fungal growth rate
Microbial activity
Microbial community

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art (subject category)
ref (subject category)

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Aira, Manuel
Gomez-Brandon, M ...
Lazcano, Cristin ...
Bååth, Erland
Dominguez, Jorge
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NATURAL SCIENCES
NATURAL SCIENCES
and Biological Scien ...
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Soil Biology & B ...
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Lund University

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