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Virus-induced plant volatiles mediate the olfactory behaviour of its insect vectors

Lookup NU author(s): Professor Angharad MR GatehouseORCiD



This is the authors' accepted manuscript of an article that has been published in its final definitive form by Blackwell Publishing Ltd, 2021.

For re-use rights please refer to the publisher's terms and conditions.


© 2021 John Wiley & Sons Ltd.Plant viruses can manipulate their hosts to release odours that are attractive or repellent to their insect vectors. However, the volatile organic compounds (VOCs), either individually or as mixtures, which play a key role in the olfactory behaviour of insect vectors remains largely unknown. Our study focused on green rice leafhoppers (GRLHs) vectoring rice dwarf virus (RDV) revealed that RDV infection significantly induced the emission of (E)-β-caryophyllene and 2-heptanol by rice plants, which influenced the olfactory behaviour of both non-viruliferous and viruliferous GRLHs. (E)-β-caryophyllene attracted non-viruliferous GRLHs to settle on RDV-infected plants, but neither attracted nor repelled viruliferous GRLHs. In contrast, 2-heptanol repelled viruliferous GRLHs to settle on RDV-infected plants, but neither repelled nor attracted non-viruliferous GRLHs. Suppression of (E)-β-caryophyllene synthase OsCAS via CRISPR-Cas9 to generate oscas-1 plants enabled us to confirm the important role played by (E)-β-caryophyllene in modulating the virus-vector-host plant interaction. These novel results reveal the role of these virus-induced VOCs in modulating the behaviour of its GRLH insect vector and may facilitate the design of new strategies for disease control through manipulation of plant volatile emissions.

Publication metadata

Author(s): Chang X, Wang F, Fang Q, Chen F, Yao H, Gatehouse AMR, Ye G

Publication type: Article

Publication status: Published

Journal: Plant Cell and Environment

Year: 2021

Volume: 44

Issue: 8

Pages: 2700-2715

Print publication date: 01/08/2021

Online publication date: 18/04/2021

Acceptance date: 07/04/2021

Date deposited: 09/06/2021

ISSN (print): 0140-7791

ISSN (electronic): 1365-3040

Publisher: Blackwell Publishing Ltd


DOI: 10.1111/pce.14069


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