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Gene flow among different teosinte taxa and into the domesticated maize gene pool

dc.contributor.authorWarburton, M.L.
dc.contributor.authorWilkes, G.
dc.contributor.authorTaba, S.
dc.contributor.authorCharcosset, A.
dc.contributor.authorMir, C.
dc.contributor.authorDumas, F.
dc.contributor.authorMadur, D.
dc.contributor.authorDreisigacker, S.
dc.contributor.authorBedoya, C.
dc.contributor.authorPrasanna, B.M.
dc.contributor.authorXie, C.X.
dc.contributor.authorHearne, S.
dc.contributor.authorFranco, J.
dc.date.accessioned2019-12-04T11:10:35Z
dc.date.available2019-12-04T11:10:35Z
dc.date.issued2011
dc.identifier.citationWarburton, M.L., Wilkes, G., Taba, S., Charcosset, A., Mir, C., Dumas, F., … & Franco, J. (2011). Gene flow among different teosinte taxa and into the domesticated maize gene pool. Genetic Resources and Crop Evolution, 58(8), 1243-1261.
dc.identifier.issn0925-9864
dc.identifier.urihttps://hdl.handle.net/20.500.12478/2202
dc.description.abstractMaize (Zea mays L. ssp. mays) was domesticated from one wild species ancestor, the Balsas teosinte (Zea mays ssp. parviglumis) about 9000 years ago. Higher levels of gene diversity are found in teosinte taxa compared to maize, following domestication and selection bottlenecks. Diversity in maize can be increased via gene flow from teosinte, which has certainly occurred from various taxa, but the rate of flow from different teosinte taxa and the final impact on maize evolution has been difficult to measure. One hundred populations from six Zea taxa, both domesticated (maize) and wild (teosinte), including domesticated landraces from Asia, Africa, and the Americas, were genotyped with 17 SSR markers using 15 individuals per population. Overall levels of diversity were high, and populations could be distinguished based on markers. Relationships between populations followed most published reports, or can now help resolve previously conflicting reports. Gene flow into maize from different teosinte groups, and gene flow between different teosintes, was estimated. Evidence for contributions from the Balsas teosintes and from Chalco teosintes (Z. mays ssp. mexicana) to the maize gene pool was found, as well as from Chalco into ssp. mexicana race “Durango” and Z. mays ssp. huehuetenengensis. These contributions are almost certainly the result of post-domestication (and ongoing) exchanges. This information must give more impetus to in situ conservation of teosinte species, and use of these teosintes to continue to direct the evolution of maize, especially in response to new diseases, insect pests, and other biotic and abiotic stresses.
dc.description.sponsorshipCGIAR Generation Challenge Program
dc.language.isoen
dc.subjectCrops
dc.subjectEvolution
dc.subjectGene Flow
dc.subjectMaize
dc.subjectMolecular Markers
dc.subjectTeosinte
dc.titleGene flow among different teosinte taxa and into the domesticated maize gene pool
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationUnited States Department of Agriculture
cg.contributor.affiliationUniversity of Massachusetts
cg.contributor.affiliationInternational Maize and Wheat Improvement Center
cg.contributor.affiliationStation de Genetique Vegetale
cg.contributor.affiliationInstitute of Crop Science, China
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectMaize
cg.journalGenetic Resources and Crop Evolution
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid90933
cg.identifier.doihttps://dx.doi.org/10.1007/s10722-010-9658-1


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