The chemical signatures underlying host plant discrimination by aphids

Abstract The diversity of phytophagous insects is largely attributable to speciation involving shifts between host plants. These shifts are mediated by the close interaction between insects and plant metabolites. However, there has been limited progress in understanding the chemical signatures that...

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Autores principales:	David P. Hopkins, Duncan D. Cameron, Roger K. Butlin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bd57f1ead4684a0d99887c5e2da175d4
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spelling	oai:doaj.org-article:bd57f1ead4684a0d99887c5e2da175d42021-12-02T12:32:37ZThe chemical signatures underlying host plant discrimination by aphids10.1038/s41598-017-07729-02045-2322https://doaj.org/article/bd57f1ead4684a0d99887c5e2da175d42017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07729-0https://doaj.org/toc/2045-2322Abstract The diversity of phytophagous insects is largely attributable to speciation involving shifts between host plants. These shifts are mediated by the close interaction between insects and plant metabolites. However, there has been limited progress in understanding the chemical signatures that underlie host preferences. We use the pea aphid (Acyrthosiphon pisum) to address this problem. Host-associated races of pea aphid discriminate between plant species in race-specific ways. We combined metabolomic profiling of multiple plant species with behavioural tests on two A. pisum races, to identify metabolites that explain variation in either acceptance or discrimination. Candidate compounds were identified using tandem mass spectrometry. Our results reveal a small number of compounds that explain a large proportion of variation in the differential acceptability of plants to A. pisum races. Two of these were identified as L-phenylalanine and L-tyrosine but it may be that metabolically-related compounds directly influence insect behaviour. The compounds implicated in differential acceptability were not related to the set correlated with general acceptability of plants to aphids, regardless of host race. Small changes in response to common metabolites may underlie host shifts. This study opens new opportunities for understanding the mechanistic basis of host discrimination and host shifts in insects.David P. HopkinsDuncan D. CameronRoger K. ButlinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q David P. Hopkins Duncan D. Cameron Roger K. Butlin The chemical signatures underlying host plant discrimination by aphids
description	Abstract The diversity of phytophagous insects is largely attributable to speciation involving shifts between host plants. These shifts are mediated by the close interaction between insects and plant metabolites. However, there has been limited progress in understanding the chemical signatures that underlie host preferences. We use the pea aphid (Acyrthosiphon pisum) to address this problem. Host-associated races of pea aphid discriminate between plant species in race-specific ways. We combined metabolomic profiling of multiple plant species with behavioural tests on two A. pisum races, to identify metabolites that explain variation in either acceptance or discrimination. Candidate compounds were identified using tandem mass spectrometry. Our results reveal a small number of compounds that explain a large proportion of variation in the differential acceptability of plants to A. pisum races. Two of these were identified as L-phenylalanine and L-tyrosine but it may be that metabolically-related compounds directly influence insect behaviour. The compounds implicated in differential acceptability were not related to the set correlated with general acceptability of plants to aphids, regardless of host race. Small changes in response to common metabolites may underlie host shifts. This study opens new opportunities for understanding the mechanistic basis of host discrimination and host shifts in insects.
format	article
author	David P. Hopkins Duncan D. Cameron Roger K. Butlin
author_facet	David P. Hopkins Duncan D. Cameron Roger K. Butlin
author_sort	David P. Hopkins
title	The chemical signatures underlying host plant discrimination by aphids
title_short	The chemical signatures underlying host plant discrimination by aphids
title_full	The chemical signatures underlying host plant discrimination by aphids
title_fullStr	The chemical signatures underlying host plant discrimination by aphids
title_full_unstemmed	The chemical signatures underlying host plant discrimination by aphids
title_sort	chemical signatures underlying host plant discrimination by aphids
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/bd57f1ead4684a0d99887c5e2da175d4
work_keys_str_mv	AT davidphopkins thechemicalsignaturesunderlyinghostplantdiscriminationbyaphids AT duncandcameron thechemicalsignaturesunderlyinghostplantdiscriminationbyaphids AT rogerkbutlin thechemicalsignaturesunderlyinghostplantdiscriminationbyaphids AT davidphopkins chemicalsignaturesunderlyinghostplantdiscriminationbyaphids AT duncandcameron chemicalsignaturesunderlyinghostplantdiscriminationbyaphids AT rogerkbutlin chemicalsignaturesunderlyinghostplantdiscriminationbyaphids
_version_	1718394059912904704

The chemical signatures underlying host plant discrimination by aphids

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