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Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment

Transgene introgression into crop weedy/wild relatives can provide natural selective advantages, probably causing undesirable environmental impact. The advantages are likely associated with factors such as transgenes, selective pressure, and genetic background of transgene recipients. To explore the...

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Autores principales: Xia, Hui, Zhang, Hongbin, Wang, Wei, Yang, Xiao, Wang, Feng, Su, Jun, Xia, Hanbing, Xu, Kai, Cai, Xingxing, Lu, Bao‐Rong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4947147/
https://www.ncbi.nlm.nih.gov/pubmed/27468303
http://dx.doi.org/10.1111/eva.12369
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author Xia, Hui
Zhang, Hongbin
Wang, Wei
Yang, Xiao
Wang, Feng
Su, Jun
Xia, Hanbing
Xu, Kai
Cai, Xingxing
Lu, Bao‐Rong
author_facet Xia, Hui
Zhang, Hongbin
Wang, Wei
Yang, Xiao
Wang, Feng
Su, Jun
Xia, Hanbing
Xu, Kai
Cai, Xingxing
Lu, Bao‐Rong
author_sort Xia, Hui
collection PubMed
description Transgene introgression into crop weedy/wild relatives can provide natural selective advantages, probably causing undesirable environmental impact. The advantages are likely associated with factors such as transgenes, selective pressure, and genetic background of transgene recipients. To explore the role of the environment and background of transgene recipients in affecting the advantages, we estimated the fitness of crop‐weed hybrid lineages derived from crosses between marker‐free insect‐resistant transgenic (Bt/CpTI) rice with five weedy rice populations under varied insect pressure. Multiway anova indicated the significant effect of both transgenes and weedy rice genotypes on the performance of crop‐weed hybrid lineages in the high‐insect environment. Increased fecundity was detected in most transgene‐present F(1) and F(2) hybrid lineages under high‐insect pressure, but varied among crop‐weed hybrid lineages with different weedy rice parents. Increased fecundity of transgenic crop‐weed hybrid lineages was associated with the environmental insect pressure and genotypes of their weedy rice parents. The findings suggest that the fitness effects of an insect‐resistant transgene introgressed into weedy populations are not uniform across different environments and genotypes of the recipient plants that have acquired the transgene. Therefore, these factors should be considered when assessing the environmental impact of transgene flow to weedy or wild rice relatives.
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spelling pubmed-49471472016-07-27 Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment Xia, Hui Zhang, Hongbin Wang, Wei Yang, Xiao Wang, Feng Su, Jun Xia, Hanbing Xu, Kai Cai, Xingxing Lu, Bao‐Rong Evol Appl Original Article Transgene introgression into crop weedy/wild relatives can provide natural selective advantages, probably causing undesirable environmental impact. The advantages are likely associated with factors such as transgenes, selective pressure, and genetic background of transgene recipients. To explore the role of the environment and background of transgene recipients in affecting the advantages, we estimated the fitness of crop‐weed hybrid lineages derived from crosses between marker‐free insect‐resistant transgenic (Bt/CpTI) rice with five weedy rice populations under varied insect pressure. Multiway anova indicated the significant effect of both transgenes and weedy rice genotypes on the performance of crop‐weed hybrid lineages in the high‐insect environment. Increased fecundity was detected in most transgene‐present F(1) and F(2) hybrid lineages under high‐insect pressure, but varied among crop‐weed hybrid lineages with different weedy rice parents. Increased fecundity of transgenic crop‐weed hybrid lineages was associated with the environmental insect pressure and genotypes of their weedy rice parents. The findings suggest that the fitness effects of an insect‐resistant transgene introgressed into weedy populations are not uniform across different environments and genotypes of the recipient plants that have acquired the transgene. Therefore, these factors should be considered when assessing the environmental impact of transgene flow to weedy or wild rice relatives. John Wiley and Sons Inc. 2016-03-02 /pmc/articles/PMC4947147/ /pubmed/27468303 http://dx.doi.org/10.1111/eva.12369 Text en © 2016 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Xia, Hui
Zhang, Hongbin
Wang, Wei
Yang, Xiao
Wang, Feng
Su, Jun
Xia, Hanbing
Xu, Kai
Cai, Xingxing
Lu, Bao‐Rong
Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment
title Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment
title_full Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment
title_fullStr Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment
title_full_unstemmed Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment
title_short Ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: Implications for environmental biosafety assessment
title_sort ambient insect pressure and recipient genotypes determine fecundity of transgenic crop‐weed rice hybrid progeny: implications for environmental biosafety assessment
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4947147/
https://www.ncbi.nlm.nih.gov/pubmed/27468303
http://dx.doi.org/10.1111/eva.12369
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