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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    Root herbivory induces an above-ground indirect defence
    Wackers, F.L. ; Bezemer, T.M. - \ 2003
    Ecology Letters 6 (2003). - ISSN 1461-023X - p. 9 - 12.
    nectar production - plants - insect - cotton
    Indirect plant defences have largely been studied within the scope of above-ground interactions. Here we provide novel evidence that root herbivory can induce an above-ground indirect defence. Cotton plants (Gossypium herbaceum ) exposed to root-feeding wireworms (Agriotes lineatus ) increased their foliar extrafloral nectar production ten-fold in comparison to undamaged control plants. Mechanical root damage also yielded an increase in nectar production. In nature, extrafloral nectar production allows plants to recruit predators, which in turn protect the plant against above-ground insect herbivores. Our results show that root-feeding herbivores may alter such above-ground defensive interactions.
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