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 510652
Title No difference in the competitive ability of introduced and native Trifolium provenances when grown with soil biota from their introduced and native ranges
Author(s) Shelby, Natasha; Hulme, P.E.; Putten, W.H. van der; McGinn, Kevin J.; Weser, Carolin; Duncan, R.P.
Source AoB Plants 8 (2016). - ISSN 2041-2851
Department(s) Laboratory of Nematology
Publication type Refereed Article in a scientific journal
Publication year 2016
Abstract The evolution of increased competitive ability (EICA) hypothesis could explain why some introduced plant species perform better outside their native ranges. EICA proposes that introduced plants escape specialist pathogens or herbivores leading to selection for resources to be reallocated away from defence and toward greater competitive ability. We tested the hypothesis that escape from soil enemies has led to increased competitive ability in three non-agricultural Trifolium (Fabaceae) species native to Europe that were introduced to New Zealand in the 19th century. Trifolium performance is intimately tied to rhizosphere biota. Thus, we grew plants from one introduced (New Zealand) and two native (Spain and the UK) provenances for each of three species in pots inoculated with soil microbiota collected from the rhizosphere beneath conspecifics in the introduced and native ranges. Plants were grown singly and in competition with conspecifics from a different provenance in order to compare competitive ability in the presence of different microbial communities. In contrast to the predictions of the EICA hypothesis, we found no difference in the competitive ability of introduced and native provenances when grown with soil microbiota from either the native or introduced range. Although plants from introduced provenances of two species grew more slowly than native provenances in native-range soils, as predicted by the EICA hypothesis, plants from the introduced provenance were no less competitive than native conspecifics. Overall, the growth rates of plants grown singly was a poor predictor of their competitive ability, highlighting the importance of directly quantifying plant performance in competitive scenarios, rather than relying on surrogate measures such as growth rate.
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