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 411356
Title Bacterial communities associated with Chenopodium album and Stellaria media seeds from arable soils
Author(s) Overbeek, L.S. van; Franke, A.C.; Nijhuis, E.H.; Groeneveld, R.M.W.; Nunes da Rocha, U.; Lotz, L.A.P.
Source Microbial Ecology 62 (2011)2. - ISSN 0095-3628 - p. 257 - 264.
Department(s) PRI BIOINT Ecological Interactions
Plant Production Systems
PPO/PRI AGRO Toegepaste Plantenecologie
Biointeracties and Plant Health
Publication type Refereed Article in a scientific journal
Publication year 2011
Keyword(s) solanum-tuberosum l. - verrucomicrobia subdivision 1 - 16s ribosomal-rna - microbial communities - microorganisms - rhizosphere - rhizobacteria - management - strains - banks
Abstract The bacterial community compositions in Chenopodium album and Stellaria media seeds recovered from soil (soil weed seedbank), from bulk soil, and from seeds harvested from plants grown in the same soils were compared. It was hypothesized that bacterial communities in soil weed seedbanks are distinct from the ones present in bulk soils. For that purpose, bacterial polymerase chain reaction denaturing gradient gel electrophoresis (PCR– DGGE) fingerprints, made from DNA extracts of different soils and seed fractions, were analyzed by principal component analysis. Bacterial fingerprints from C. album and S. media seeds differed from each other and from soil. Further, it revealed that bacterial fingerprints from soilrecovered and plant-harvested seeds from the same species clustered together. Hence, it was concluded that microbial communities associated with seeds in soil mostly originated from the mother plant and not from soil. In addition, the results indicated that the presence of a weed seedbank in arable soils can increase soil microbial diversity. Thus, a change in species composition or size of the soil weed seedbank, for instance, as a result of a change in crop management, could affect soil microbial diversity. The consequence of increased diversity is yet unknown, but by virtue of identification of dominant bands in PCR–DGGE fingerprints as Lysobacter oryzae (among four other species), it became clear that bacteria potentially antagonizing phytopathogens dominate in C. album seeds in soil. The role of these potential antagonists on weed and crop plant growth was discussed
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