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 481269
Title The specialist baculovirus SeMNPV egt gene facilitates tree-top disease in their Spodoptera exigua caterpillar hosts
Author(s) Han, Y.; Houte, S. van; Ros, V.I.D.; Oers, M.M. van
Event 26th NEV Entomology Day, 2014-12-19/2014-12-19
Department(s) Laboratory of Virology
PE&RC
Publication type Poster (professional)
Publication year 2014
Abstract Many parasites enhance their transmission by manipulating host behaviour. One example concerns baculoviruses that induce hyperactivity and tree-top disease (i.e. climbing to elevated positions prior to death) in their caterpillar hosts. Little is known about the underlying mechanisms of such parasite-induced behavioural changes. Here, we studied tree-top disease in Spodoptera exigua caterpillars induced by the specialist baculovirus S. exigua multiple nucleopolyhedrovirus (SeMNPV). SeMNPV induces a light-dependent climbing behaviour prior to death in S. exigua larvae. Moreover, deletion of either the open reading frame or the ATG start codon of the viral ecdysteroid UDP-glucosyltransferase (egt) gene prevents this induced behaviour, indicating that the EGT protein is required for inducing tree-top disease. We hypothesize that EGT induces this behavioural change indirectly via prolonging the larval time to death.
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