Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 411318
Title Rice root-associated bacteria: insights into community structures across 10 cultivars
Author(s) Hardoim, P.R.; Andreote, F.D.; Reinhold-Hurek, B.; Sessitsch, A.; Overbeek, L.S. van; Elsas, J.D. van
Source FEMS Microbiology Ecology 77 (2011)1. - ISSN 0168-6496 - p. 154 - 164.
Department(s) PPO/PRI Biointeractions and Plant Health
Biointeracties and Plant Health
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) gradient gel-electrophoresis - potato solanum-tuberosum - ammonia-oxidizing bacteria - 16s ribosomal-rna - oryza-sativa l. - endophytic bacteria - plant-growth - diazotrophic endophytes - systemic resistance - diversity
Abstract In this study, the effects of plant genotype, soil type and nutrient use efficiency on the composition of different bacterial communities associated with rice roots were investigated. Thus, total bacteria, Alpha- and Betaproteobacteria, Pseudomonas and Actinobacteria were studied using PCR, followed by denaturing gradient gel electrophoresis (PCR-DGGE). Rice genotype determined, to a large extent, the composition of the different bacterial communities across cultivars. Several cultivars belonging to Oryza sativa ssp. indica tended to select similar bacterial communities, whereas those belonging to subspecies japonica and aromatica selected ones with divergent community structures. An effect of soil type was pronounced for the Actinobacteria communities, while a small effect of ‘improved’ and ‘traditional’ plants was noted for all communities analyzed. A few dominant bands in PCR-DGGE, affiliated with Rhizobium radiobacter, Dickeya zeae, Mycobacterium bolletii and with members of the Rhizobiales, Rhodospirillaceae and Paenibacillaceae, were spread across cultivars. In contrast, a majority of bands (e.g. affiliated with Enterobacter cloacae or Burkholderia kururiensis) was only present in particular cultivars or was erratically distributed among rice replicates. These findings suggested that both bacterial adaptation and plant genotype contribute to the shaping of the dynamic bacterial communities associated with roots of rice plants
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