Communities of nematodes, bacteria and fungi differ among soils of different wild cabbage populations

Gols, Rieta; van Geem, Moniek; Bullock, James M. ORCID: https://orcid.org/0000-0003-0529-4020; Martens, Henk J.; Wagenaar, Roel; van der Putten, Wim H.; Harvey, Jeffrey A.. 2023 Communities of nematodes, bacteria and fungi differ among soils of different wild cabbage populations. European Journal of Soil Biology, 117, 103512. 11, pp. https://doi.org/10.1016/j.ejsobi.2023.103512

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Official URL: http://dx.doi.org/10.1016/j.ejsobi.2023.103512

Abstract/Summary

Plants exhibit significant variation in morphological and chemical traits of shoots and roots in response to an array of biotic and abiotic selection pressures, and this variation in turn affects their interactions with the biotic and abiotic environment. Thus far, most studies examining these interactions have focused on the aboveground domain, which is easier to study than the belowground domain. However, soil organisms significantly affect plant fitness directly through mutualisms e.g. growth promotion, or antagonisms e.g. herbivory and disease. Natural populations of wild Brassica oleracea L. growing along the south coastline of Great Britain exhibit significant differences in growth form and secondary chemistry. Studies in the field have shown that these differences affect aboveground plant-insect interactions, whereas soil communities have not been explored. We sampled belowground communities of nematodes, bacteria and fungi associated with roots, rhizosphere and bulk soil in five coastal wild cabbage populations in Dorset, England, and found significant differences among these communities. Site-related differences in nematode community composition were primarily found for nematodes in bulk soil and were consistent over two years of sampling. Nematode communities in roots of wild cabbage did not significantly differ across the cabbage populations but did differ between the two years. Results for communities in rhizosphere soil were spatially and temporally variable. The composition of nematode communities in cabbage roots differed strongly from those in the rhizosphere and bulk soil, showing that plants attract a subset of nematodes from the bulk soil community. For microbes, we analysed only rhizosphere samples, and found that fungal communities differed more strongly among plant populations than bacterial communities. Thus, while there is spatio-temporal variation in belowground communities, soil and/or plant properties differentially affect the assembly of nematodes, fungi and bacteria.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1016/j.ejsobi.2023.103512
UKCEH and CEH Sections/Science Areas:	Biodiversity (Science Area 2017-)
ISSN:	1164-5563
Additional Information. Not used in RCUK Gateway to Research.:	Open Access article - full text available via Official URL link.
Additional Keywords:	below ground community ecology, Brassica oleracea, glucosinolates, rhizosphere, soil biota, soil-root interphase
NORA Subject Terms:	Ecology and Environment Agriculture and Soil Science
Date made live:	07 Jul 2023 15:36 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/535117

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1016/j.ejsobi.2023.103512

UKCEH and CEH Sections/Science Areas:

Biodiversity (Science Area 2017-)

ISSN:

1164-5563

Additional Information. Not used in RCUK Gateway to Research.:

Open Access article - full text available via Official URL link.

Additional Keywords:

below ground community ecology, Brassica oleracea, glucosinolates, rhizosphere, soil biota, soil-root interphase