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Isoprene emissions influence herbivore feeding decisions

Laothawornkitkul, J and Paul, ND and Vickers, CE and Possell, M and Taylor, JE and Mullineaux, PM and Hewitt, CN (2008) 'Isoprene emissions influence herbivore feeding decisions.' Plant, Cell and Environment, 31 (10). 1410 - 1415. ISSN 0140-7791

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Isoprene (C5H8, 2-methyl 1,3-butadiene) is synthesized and emitted by many, but not all, plants. Unlike other related volatile organic compounds (monoterpenes and sesquiterpenes), isoprene has not been shown to mediate plant-herbivore interactions. Here, for the first time, we show, in feeding choice tests using isoprene-emitting transgenic tobacco plants (Nicotiana tabacum cv. Samsun) and non-emitting azygous control plants, that isoprene deters Manduca sexta caterpillars from feeding. This avoidance behaviour was confirmed using an artificial (isoprene-emitting and non-emitting control) diet. Both in vivo and in vitro experiments showed that isoprene can activate feeding avoidance behaviour in this system with a dose-response effect on caterpillar behaviour and an isoprene emission threshold level of <6 nmol m-2 s-1. © 2008 The Authors.

Item Type: Article
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science and Health > Life Sciences, School of
Depositing User: Jim Jamieson
Date Deposited: 06 Oct 2011 14:26
Last Modified: 21 Jun 2021 16:15

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