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The Potential Role of Genetic Assimilation during Maize Domestication

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dc.contributor.author Lorant, Anne en
dc.contributor.author Perdersen, Sarah en
dc.contributor.author Holst, Irene en
dc.contributor.author Hufford, Matthew B. en
dc.contributor.author Winter, Klaus en
dc.contributor.author Piperno, Dolores R. en
dc.contributor.author Ross-Ibarra, Jeffrey en
dc.date.accessioned 2017-05-25T15:49:52Z
dc.date.available 2017-05-25T15:49:52Z
dc.date.issued 2017
dc.identifier.citation Lorant, Anne, Perdersen, Sarah, Holst, Irene, Hufford, Matthew B., Winter, Klaus, Piperno, Dolores R., and Ross-Ibarra, Jeffrey. 2017. "<a href="https://repository.si.edu/handle/10088/32403">The Potential Role of Genetic Assimilation during Maize Domestication</a>." <em>PLoS One</em>. 12 (9):e0184202. <a href="https://doi.org/10.1371/journal.pone.0184202">https://doi.org/10.1371/journal.pone.0184202</a> en
dc.identifier.issn 1932-6203
dc.identifier.uri https://hdl.handle.net/10088/32438
dc.description.abstract Domestication research has largely focused on identification of morphological and genetic differences between extant populations of crops and their wild relatives. Little attention has been paid to the potential effects of environment despite substantial known changes in climate from the time of domestication to modern day. Recent research, in which maize and teosinte (i.e., wild maize) were exposed to environments similar to the time of domestication, resulted in a plastic induction of domesticated phenotypes in teosinte and little response to environment in maize. These results suggest that early agriculturalists may have selected for genetic mechanisms that cemented domestication phenotypes initially induced by a plastic response of teosinte to environment, a process known as genetic assimilation. To better understand this phenomenon and the potential role of environment in maize domestication, we examined differential gene expression in maize (Zea mays ssp. mays) and teosinte (Zea mays ssp. parviglumis) between past and present conditions. We identified a gene set of over 2000 loci showing a change in expression across environmental conditions in teosinte and invariance in maize. In fact, overall we observed both greater plasticity in gene expression and more substantial re-wiring of expression networks in teosinte across environments when compared to maize. While these results suggest genetic assimilation played at least some role in domestication, genes showing expression patterns consistent with assimilation are not significantly enriched for previously identified domestication candidates, indicating assimilation did not have a genome-wide effect. en
dc.relation.ispartof PLoS One en
dc.title The Potential Role of Genetic Assimilation during Maize Domestication en
dc.type Journal Article en
dc.identifier.srbnumber 142708
dc.identifier.doi 10.1371/journal.pone.0184202
rft.jtitle PLoS One
rft.volume 12
rft.issue 9
rft.spage e0184202
dc.description.SIUnit STRI en
dc.description.SIUnit NMNH en
dc.description.SIUnit NH-Anthropology en
dc.description.SIUnit Peer-reviewed en
dc.citation.spage e0184202


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