Greenhouse-selected resistance to Cry3Bb1-producing corn in three western corn rootworm populations.

Transgenic corn producing the Bacillus thuringiensis (Bt) toxin Cry3Bb1 has been useful for controlling western corn rootworm, Diabrotica virgifera virgifera LeConte, one of the most economically important crop pests in the United States. However, rapid evolution of resistance by this beetle to Bt c...

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Autores principales:	Lisa N Meihls, Matthew L Higdon, Mark R Ellersieck, Bruce E Tabashnik, Bruce E Hibbard
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/dfeed930d0d64a27ab427a5dcf3b7027
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spelling	oai:doaj.org-article:dfeed930d0d64a27ab427a5dcf3b70272021-11-18T08:04:25ZGreenhouse-selected resistance to Cry3Bb1-producing corn in three western corn rootworm populations.1932-620310.1371/journal.pone.0051055https://doaj.org/article/dfeed930d0d64a27ab427a5dcf3b70272012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23284656/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Transgenic corn producing the Bacillus thuringiensis (Bt) toxin Cry3Bb1 has been useful for controlling western corn rootworm, Diabrotica virgifera virgifera LeConte, one of the most economically important crop pests in the United States. However, rapid evolution of resistance by this beetle to Bt corn producing Cry3Bb1 has been reported previously from the laboratory, greenhouse, and field. Here we selected in the greenhouse for resistance to Cry3Bb1 corn in three colonies of WCR derived from Kansas, Minnesota, and Wisconsin, respectively. Three generations of rearing on Cry3Bb1 corn significantly increased larval survival on Cry3Bb1 corn, resulting in similar survival in the greenhouse for selected colonies on Cry3Bb1 corn and isoline corn that does not produce Bt toxin. After four to seven generations of rearing on Cry3Bb1 corn, survival in the field on Cry3Bb1 corn relative to isoline corn more than doubled for selected colonies (72%) compared with control colonies (33%). For both selected and control colonies, survival in the field was significantly lower on Cry3Bb1 corn than on isoline corn. On isoline corn, most fitness components were similar for selected colonies and control colonies. However, fecundity was significantly lower for selected colonies than control colonies, indicating a fitness cost associated with resistance. The rapid evolution of resistance by western corn rootworm to Bt corn reported here and previously underlines the importance of effective resistance management for this pest.Lisa N MeihlsMatthew L HigdonMark R EllersieckBruce E TabashnikBruce E HibbardPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 12, p e51055 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lisa N Meihls Matthew L Higdon Mark R Ellersieck Bruce E Tabashnik Bruce E Hibbard Greenhouse-selected resistance to Cry3Bb1-producing corn in three western corn rootworm populations.
description	Transgenic corn producing the Bacillus thuringiensis (Bt) toxin Cry3Bb1 has been useful for controlling western corn rootworm, Diabrotica virgifera virgifera LeConte, one of the most economically important crop pests in the United States. However, rapid evolution of resistance by this beetle to Bt corn producing Cry3Bb1 has been reported previously from the laboratory, greenhouse, and field. Here we selected in the greenhouse for resistance to Cry3Bb1 corn in three colonies of WCR derived from Kansas, Minnesota, and Wisconsin, respectively. Three generations of rearing on Cry3Bb1 corn significantly increased larval survival on Cry3Bb1 corn, resulting in similar survival in the greenhouse for selected colonies on Cry3Bb1 corn and isoline corn that does not produce Bt toxin. After four to seven generations of rearing on Cry3Bb1 corn, survival in the field on Cry3Bb1 corn relative to isoline corn more than doubled for selected colonies (72%) compared with control colonies (33%). For both selected and control colonies, survival in the field was significantly lower on Cry3Bb1 corn than on isoline corn. On isoline corn, most fitness components were similar for selected colonies and control colonies. However, fecundity was significantly lower for selected colonies than control colonies, indicating a fitness cost associated with resistance. The rapid evolution of resistance by western corn rootworm to Bt corn reported here and previously underlines the importance of effective resistance management for this pest.
format	article
author	Lisa N Meihls Matthew L Higdon Mark R Ellersieck Bruce E Tabashnik Bruce E Hibbard
author_facet	Lisa N Meihls Matthew L Higdon Mark R Ellersieck Bruce E Tabashnik Bruce E Hibbard
author_sort	Lisa N Meihls
title	Greenhouse-selected resistance to Cry3Bb1-producing corn in three western corn rootworm populations.
title_short	Greenhouse-selected resistance to Cry3Bb1-producing corn in three western corn rootworm populations.
title_full	Greenhouse-selected resistance to Cry3Bb1-producing corn in three western corn rootworm populations.
title_fullStr	Greenhouse-selected resistance to Cry3Bb1-producing corn in three western corn rootworm populations.
title_full_unstemmed	Greenhouse-selected resistance to Cry3Bb1-producing corn in three western corn rootworm populations.
title_sort	greenhouse-selected resistance to cry3bb1-producing corn in three western corn rootworm populations.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/dfeed930d0d64a27ab427a5dcf3b7027
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Greenhouse-selected resistance to Cry3Bb1-producing corn in three western corn rootworm populations.

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