Effects of the repellent polygodial on stylet penetration behaviour and non-persistent transmission of plant viruses by aphids

Powell, G., Hardie, J. and Pickett, J. ORCID: https://orcid.org/0000-0002-8386-3770 1996. Effects of the repellent polygodial on stylet penetration behaviour and non-persistent transmission of plant viruses by aphids. Journal of Applied Entomology 120 (4) , pp. 241-243. 10.1111/j.1439-0418.1996.tb01598.x

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Abstract

Behavioural effects of the plant-derived repellent polygodial were investigated by video recording aphids during access to potato virus Y (PVY) or cucumber mosaic virus (CMV) infected tobacco leaf material. Stylet penetration of floating leaf discs, assessed using antennal and body movements as behavioural markers, was significantly delayed by polygodial treatment of the leaf surface. This delay may help account for a previously reported reduction of virus transmission caused by polygodial, although the majority (77%) of aphids on polygodial-treated leaf areas penetrated within the first minute, compared with 100% on solvent-treated areas. Neither the duration of stylet penetrations, nor subsequent transmission of PVY or CMV, were affected by the presence of polygodial on virus-infected plants. Electrical recording of stylet activities confirmed that aphid stylets punctured plant cell membranes, regardless of polygodial treatment of PVY-infected plants.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Chemistry
Publisher:	Wiley
ISSN:	0931-2048
Last Modified:	25 Feb 2026 11:00
URI:	https://orca.cardiff.ac.uk/id/eprint/185208

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