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 497439
Title Baiting of bacteria with hyphae of common soil fungi revealed a diverse group of potentially mycophagous secondary consumers in the rhizosphere
Author(s) Rudnick, M.B.; Veen, J.A. van; Boer, W. de
Source Soil Biology and Biochemistry 88 (2015). - ISSN 0038-0717 - p. 73 - 82.
DOI http://dx.doi.org/10.1016/j.soilbio.2015.04.015
Department(s) Chair Soil Biology and Biological Soil Quality
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2015
Abstract Fungi and bacteria are primary consumers of plant-derived organic compounds and therefore considered as basal members of soil food webs. Trophic interactions among these microorganisms could, however, induce shifts in food web energy flows. Given increasing evidence for a prominent role of saprotrophic fungi as primary consumers of root-derived carbon, we propose that fungus-derived carbon may be an important resource for rhizosphere bacteria. To test this assumption, two common saprotrophic, rhizosphere-inhabiting fungi, Trichoderma harzianum and Mucor hiemalis, were confronted in a microcosm system with bacterial communities extracted from the rhizospheres of a grass and sedge species, Carex arenaria and Festuca rubra. This showed a widespread ability of rhizosphere bacteria to attach to and feed on living hyphae of saprotrophic fungi. The identity of the fungi had a strong effect on the composition of these potentially mycophagous bacteria, whereas plant species identity was less important. Based on our results, we suggest that food web models should account for bacterial secondary consumption since this has important consequences for carbon fluxes with more carbon dioxide released by microbes and less microbial carbon available for the soil animal food web.
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