Indirect effect of a transgenic wheat on aphids through enhanced powdery mildew resistance.

In agricultural ecosystems, arthropod herbivores and fungal pathogens are likely to colonise the same plant and may therefore affect each other directly or indirectly. The fungus that causes powdery mildew (Blumeria graminis tritici) and cereal aphids are important pests of wheat but interactions be...

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Autores principales:	Simone von Burg, Fernando Álvarez-Alfageme, Jörg Romeis
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/332ffe2fd393468e9ab6ba080378ac0c
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spelling	oai:doaj.org-article:332ffe2fd393468e9ab6ba080378ac0c2021-11-18T08:12:56ZIndirect effect of a transgenic wheat on aphids through enhanced powdery mildew resistance.1932-620310.1371/journal.pone.0046333https://doaj.org/article/332ffe2fd393468e9ab6ba080378ac0c2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23056284/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203In agricultural ecosystems, arthropod herbivores and fungal pathogens are likely to colonise the same plant and may therefore affect each other directly or indirectly. The fungus that causes powdery mildew (Blumeria graminis tritici) and cereal aphids are important pests of wheat but interactions between them have seldom been investigated. We studied the effects of powdery mildew of wheat on two cereal aphid species, Metopolophium dirhodum and Rhopalosiphum padi. We hypothesized that aphid number and size will be smaller on powdery mildew-infected plants than on non-infected plants. In a first experiment we used six commercially available wheat varieties whereas in the second experiment we used a genetically modified (GM) mildew-resistant wheat line and its non-transgenic sister line. Because the two lines differed only in the presence of the transgene and in powdery mildew resistance, experiment 2 avoided the confounding effect of variety. In both experiments, the number of M. dirhodum but not of R. padi was reduced by powdery mildew infection. Transgenic mildew-resistant lines therefore harboured bigger aphid populations than the non-transgenic lines. For both aphid species individual size was mostly influenced by aphid number. Our results indicate that plants that are protected from a particular pest (powdery mildew) became more favourable for another pest (aphids).Simone von BurgFernando Álvarez-AlfagemeJörg RomeisPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 10, p e46333 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Simone von Burg Fernando Álvarez-Alfageme Jörg Romeis Indirect effect of a transgenic wheat on aphids through enhanced powdery mildew resistance.
description	In agricultural ecosystems, arthropod herbivores and fungal pathogens are likely to colonise the same plant and may therefore affect each other directly or indirectly. The fungus that causes powdery mildew (Blumeria graminis tritici) and cereal aphids are important pests of wheat but interactions between them have seldom been investigated. We studied the effects of powdery mildew of wheat on two cereal aphid species, Metopolophium dirhodum and Rhopalosiphum padi. We hypothesized that aphid number and size will be smaller on powdery mildew-infected plants than on non-infected plants. In a first experiment we used six commercially available wheat varieties whereas in the second experiment we used a genetically modified (GM) mildew-resistant wheat line and its non-transgenic sister line. Because the two lines differed only in the presence of the transgene and in powdery mildew resistance, experiment 2 avoided the confounding effect of variety. In both experiments, the number of M. dirhodum but not of R. padi was reduced by powdery mildew infection. Transgenic mildew-resistant lines therefore harboured bigger aphid populations than the non-transgenic lines. For both aphid species individual size was mostly influenced by aphid number. Our results indicate that plants that are protected from a particular pest (powdery mildew) became more favourable for another pest (aphids).
format	article
author	Simone von Burg Fernando Álvarez-Alfageme Jörg Romeis
author_facet	Simone von Burg Fernando Álvarez-Alfageme Jörg Romeis
author_sort	Simone von Burg
title	Indirect effect of a transgenic wheat on aphids through enhanced powdery mildew resistance.
title_short	Indirect effect of a transgenic wheat on aphids through enhanced powdery mildew resistance.
title_full	Indirect effect of a transgenic wheat on aphids through enhanced powdery mildew resistance.
title_fullStr	Indirect effect of a transgenic wheat on aphids through enhanced powdery mildew resistance.
title_full_unstemmed	Indirect effect of a transgenic wheat on aphids through enhanced powdery mildew resistance.
title_sort	indirect effect of a transgenic wheat on aphids through enhanced powdery mildew resistance.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/332ffe2fd393468e9ab6ba080378ac0c
work_keys_str_mv	AT simonevonburg indirecteffectofatransgenicwheatonaphidsthroughenhancedpowderymildewresistance AT fernandoalvarezalfageme indirecteffectofatransgenicwheatonaphidsthroughenhancedpowderymildewresistance AT jorgromeis indirecteffectofatransgenicwheatonaphidsthroughenhancedpowderymildewresistance
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Indirect effect of a transgenic wheat on aphids through enhanced powdery mildew resistance.

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