Dispersal of transgenes through maize seed systems in Mexico.

<h4>Objectives</h4>Current models of transgene dispersal focus on gene flow via pollen while neglecting seed, a vital vehicle for gene flow in centers of crop origin and diversity. We analyze the dispersal of maize transgenes via seeds in Mexico, the crop's cradle.<h4>Methods&...

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Autores principales:	George A Dyer, J Antonio Serratos-Hernández, Hugo R Perales, Paul Gepts, Alma Piñeyro-Nelson, Angeles Chávez, Noé Salinas-Arreortua, Antonio Yúnez-Naude, J Edward Taylor, Elena R Alvarez-Buylla
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2009
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ecd4ae10b2b74147b15c39f0f239fb77
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spelling	oai:doaj.org-article:ecd4ae10b2b74147b15c39f0f239fb772021-11-25T06:22:23ZDispersal of transgenes through maize seed systems in Mexico.1932-620310.1371/journal.pone.0005734https://doaj.org/article/ecd4ae10b2b74147b15c39f0f239fb772009-05-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19503610/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Objectives</h4>Current models of transgene dispersal focus on gene flow via pollen while neglecting seed, a vital vehicle for gene flow in centers of crop origin and diversity. We analyze the dispersal of maize transgenes via seeds in Mexico, the crop's cradle.<h4>Methods</h4>We use immunoassays (ELISA) to screen for the activity of recombinant proteins in a nationwide sample of farmer seed stocks. We estimate critical parameters of seed population dynamics using household survey data and combine these estimates with analytical results to examine presumed sources and mechanisms of dispersal.<h4>Results</h4>Recombinant proteins Cry1Ab/Ac and CP4/EPSPS were found in 3.1% and 1.8% of samples, respectively. They are most abundant in southeast Mexico but also present in the west-central region. Diffusion of seed and grain imported from the United States might explain the frequency and distribution of transgenes in west-central Mexico but not in the southeast.<h4>Conclusions</h4>Understanding the potential for transgene survival and dispersal should help design methods to regulate the diffusion of germplasm into local seed stocks. Further research is needed on the interactions between formal and informal seed systems and grain markets in centers of crop origin and diversification.George A DyerJ Antonio Serratos-HernándezHugo R PeralesPaul GeptsAlma Piñeyro-NelsonAngeles ChávezNoé Salinas-ArreortuaAntonio Yúnez-NaudeJ Edward TaylorElena R Alvarez-BuyllaPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 4, Iss 5, p e5734 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q George A Dyer J Antonio Serratos-Hernández Hugo R Perales Paul Gepts Alma Piñeyro-Nelson Angeles Chávez Noé Salinas-Arreortua Antonio Yúnez-Naude J Edward Taylor Elena R Alvarez-Buylla Dispersal of transgenes through maize seed systems in Mexico.
description	<h4>Objectives</h4>Current models of transgene dispersal focus on gene flow via pollen while neglecting seed, a vital vehicle for gene flow in centers of crop origin and diversity. We analyze the dispersal of maize transgenes via seeds in Mexico, the crop's cradle.<h4>Methods</h4>We use immunoassays (ELISA) to screen for the activity of recombinant proteins in a nationwide sample of farmer seed stocks. We estimate critical parameters of seed population dynamics using household survey data and combine these estimates with analytical results to examine presumed sources and mechanisms of dispersal.<h4>Results</h4>Recombinant proteins Cry1Ab/Ac and CP4/EPSPS were found in 3.1% and 1.8% of samples, respectively. They are most abundant in southeast Mexico but also present in the west-central region. Diffusion of seed and grain imported from the United States might explain the frequency and distribution of transgenes in west-central Mexico but not in the southeast.<h4>Conclusions</h4>Understanding the potential for transgene survival and dispersal should help design methods to regulate the diffusion of germplasm into local seed stocks. Further research is needed on the interactions between formal and informal seed systems and grain markets in centers of crop origin and diversification.
format	article
author	George A Dyer J Antonio Serratos-Hernández Hugo R Perales Paul Gepts Alma Piñeyro-Nelson Angeles Chávez Noé Salinas-Arreortua Antonio Yúnez-Naude J Edward Taylor Elena R Alvarez-Buylla
author_facet	George A Dyer J Antonio Serratos-Hernández Hugo R Perales Paul Gepts Alma Piñeyro-Nelson Angeles Chávez Noé Salinas-Arreortua Antonio Yúnez-Naude J Edward Taylor Elena R Alvarez-Buylla
author_sort	George A Dyer
title	Dispersal of transgenes through maize seed systems in Mexico.
title_short	Dispersal of transgenes through maize seed systems in Mexico.
title_full	Dispersal of transgenes through maize seed systems in Mexico.
title_fullStr	Dispersal of transgenes through maize seed systems in Mexico.
title_full_unstemmed	Dispersal of transgenes through maize seed systems in Mexico.
title_sort	dispersal of transgenes through maize seed systems in mexico.
publisher	Public Library of Science (PLoS)
publishDate	2009
url	https://doaj.org/article/ecd4ae10b2b74147b15c39f0f239fb77
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Dispersal of transgenes through maize seed systems in Mexico.

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