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Parental effects of Bt toxin and vitamin A on Helicoverpa armigera

The increase in the area cultivated with vitamin-enriched transgenic crops producing Bt toxin raises the question of whether the addition of vitamins will in any way mitigates the effect of the toxin on the phytophagous insects that feed on those crops. On the other hand, the parental effect that fe...

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Autores principales: López, Carmen, Zanga, Daniela, Juárez-Escario, Alejandro, Muñoz, Pilar, Eizaguirre, Matilde
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9258806/
https://www.ncbi.nlm.nih.gov/pubmed/35793308
http://dx.doi.org/10.1371/journal.pone.0269585
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author López, Carmen
Zanga, Daniela
Juárez-Escario, Alejandro
Muñoz, Pilar
Eizaguirre, Matilde
author_facet López, Carmen
Zanga, Daniela
Juárez-Escario, Alejandro
Muñoz, Pilar
Eizaguirre, Matilde
author_sort López, Carmen
collection PubMed
description The increase in the area cultivated with vitamin-enriched transgenic crops producing Bt toxin raises the question of whether the addition of vitamins will in any way mitigates the effect of the toxin on the phytophagous insects that feed on those crops. On the other hand, the parental effect that feeding on these enriched transgenic crops may have on the offspring of the phytophagous that survive on them is not well known. In this work, the effect of vitamin A (β-carotene) addition to diets with or without Bt toxin on Helicoverpa armigera larvae and their offspring was determined. The addition of vitamin A did not have any beneficial effect either for the larvae fed on enriched diets nor for their offspring. However, parental effects due to dietary feeding with the toxin were detected since adults from larvae fed on the Bt diet had higher mating success than those fed on the toxin-free diet, although there were no differences on the fertility of mated females regardless of whether their previous larvae fed on the Bt or non-Bt diet. A certain adaptive effect to the toxin was also noted since the mortality of larvae whose previous generation fed on diet with Bt was lower than that of the larvae that came from larvae fed on a non-Bt diet. It would be interesting to determine if H. armigera adults prefer to mate and lay eggs in the same type of crops in which they have developed or if feeding on different crops, such as corn or alfalfa, causes different paternal effects on the offspring. These aspects can be of great importance in the development of resistance of this species to the Bt toxin.
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spelling pubmed-92588062022-07-07 Parental effects of Bt toxin and vitamin A on Helicoverpa armigera López, Carmen Zanga, Daniela Juárez-Escario, Alejandro Muñoz, Pilar Eizaguirre, Matilde PLoS One Research Article The increase in the area cultivated with vitamin-enriched transgenic crops producing Bt toxin raises the question of whether the addition of vitamins will in any way mitigates the effect of the toxin on the phytophagous insects that feed on those crops. On the other hand, the parental effect that feeding on these enriched transgenic crops may have on the offspring of the phytophagous that survive on them is not well known. In this work, the effect of vitamin A (β-carotene) addition to diets with or without Bt toxin on Helicoverpa armigera larvae and their offspring was determined. The addition of vitamin A did not have any beneficial effect either for the larvae fed on enriched diets nor for their offspring. However, parental effects due to dietary feeding with the toxin were detected since adults from larvae fed on the Bt diet had higher mating success than those fed on the toxin-free diet, although there were no differences on the fertility of mated females regardless of whether their previous larvae fed on the Bt or non-Bt diet. A certain adaptive effect to the toxin was also noted since the mortality of larvae whose previous generation fed on diet with Bt was lower than that of the larvae that came from larvae fed on a non-Bt diet. It would be interesting to determine if H. armigera adults prefer to mate and lay eggs in the same type of crops in which they have developed or if feeding on different crops, such as corn or alfalfa, causes different paternal effects on the offspring. These aspects can be of great importance in the development of resistance of this species to the Bt toxin. Public Library of Science 2022-07-06 /pmc/articles/PMC9258806/ /pubmed/35793308 http://dx.doi.org/10.1371/journal.pone.0269585 Text en © 2022 López et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
López, Carmen
Zanga, Daniela
Juárez-Escario, Alejandro
Muñoz, Pilar
Eizaguirre, Matilde
Parental effects of Bt toxin and vitamin A on Helicoverpa armigera
title Parental effects of Bt toxin and vitamin A on Helicoverpa armigera
title_full Parental effects of Bt toxin and vitamin A on Helicoverpa armigera
title_fullStr Parental effects of Bt toxin and vitamin A on Helicoverpa armigera
title_full_unstemmed Parental effects of Bt toxin and vitamin A on Helicoverpa armigera
title_short Parental effects of Bt toxin and vitamin A on Helicoverpa armigera
title_sort parental effects of bt toxin and vitamin a on helicoverpa armigera
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9258806/
https://www.ncbi.nlm.nih.gov/pubmed/35793308
http://dx.doi.org/10.1371/journal.pone.0269585
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