Fast diffusion of domesticated maize to temperate zones

Abstract Adaptation to a temperate climate was a prerequisite for the spread of maize across a broad geographical range. To explicitly explore the demographic process underlying maize adaptation, we used a diffusion-based method to model the differentiation between temperate and tropical populations...

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Autores principales:	Xiaolong Li, Yinqiao Jian, Chuanxiao Xie, Jun Wu, Yunbi Xu, Cheng Zou
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9d6345e798854eb29be23a286677986c
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spelling	oai:doaj.org-article:9d6345e798854eb29be23a286677986c2021-12-02T12:32:27ZFast diffusion of domesticated maize to temperate zones10.1038/s41598-017-02125-02045-2322https://doaj.org/article/9d6345e798854eb29be23a286677986c2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02125-0https://doaj.org/toc/2045-2322Abstract Adaptation to a temperate climate was a prerequisite for the spread of maize across a broad geographical range. To explicitly explore the demographic process underlying maize adaptation, we used a diffusion-based method to model the differentiation between temperate and tropical populations using the Non-Stiff Stalk group as a proxy for temperate maize. Based on multiple sequential Markovian coalescent approaches, we estimate that tropical and temperate maize diverged approximately 3‚000 to 5‚000 years ago and the population size shrank after the split. Using composite likelihood approaches, we identified a distinct tropical-temperate divergence event initiated 4‚958 years ago (95% confidence interval (CI): 4‚877–5‚039) from an ancestral population whose effective size was 24,162 (95% CI: 23,914–24,409). We found that continuous gene flow between tropical and temperate maize accompanied the differentiation of temperate maize. Long identical-by-descent tracts shared by tropical and temperate inbred lines have been identified, which might be the result of gene flow between tropical and temperate maize or artificial selection during domestication and crop improvement. Understanding the demographic history of maize diffusion not only provides evidence for population dynamics of maize, but will also assist the identification of regions under selection and the genetic basis of complex traits of agronomic importance.Xiaolong LiYinqiao JianChuanxiao XieJun WuYunbi XuCheng ZouNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Xiaolong Li Yinqiao Jian Chuanxiao Xie Jun Wu Yunbi Xu Cheng Zou Fast diffusion of domesticated maize to temperate zones
description	Abstract Adaptation to a temperate climate was a prerequisite for the spread of maize across a broad geographical range. To explicitly explore the demographic process underlying maize adaptation, we used a diffusion-based method to model the differentiation between temperate and tropical populations using the Non-Stiff Stalk group as a proxy for temperate maize. Based on multiple sequential Markovian coalescent approaches, we estimate that tropical and temperate maize diverged approximately 3‚000 to 5‚000 years ago and the population size shrank after the split. Using composite likelihood approaches, we identified a distinct tropical-temperate divergence event initiated 4‚958 years ago (95% confidence interval (CI): 4‚877–5‚039) from an ancestral population whose effective size was 24,162 (95% CI: 23,914–24,409). We found that continuous gene flow between tropical and temperate maize accompanied the differentiation of temperate maize. Long identical-by-descent tracts shared by tropical and temperate inbred lines have been identified, which might be the result of gene flow between tropical and temperate maize or artificial selection during domestication and crop improvement. Understanding the demographic history of maize diffusion not only provides evidence for population dynamics of maize, but will also assist the identification of regions under selection and the genetic basis of complex traits of agronomic importance.
format	article
author	Xiaolong Li Yinqiao Jian Chuanxiao Xie Jun Wu Yunbi Xu Cheng Zou
author_facet	Xiaolong Li Yinqiao Jian Chuanxiao Xie Jun Wu Yunbi Xu Cheng Zou
author_sort	Xiaolong Li
title	Fast diffusion of domesticated maize to temperate zones
title_short	Fast diffusion of domesticated maize to temperate zones
title_full	Fast diffusion of domesticated maize to temperate zones
title_fullStr	Fast diffusion of domesticated maize to temperate zones
title_full_unstemmed	Fast diffusion of domesticated maize to temperate zones
title_sort	fast diffusion of domesticated maize to temperate zones
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/9d6345e798854eb29be23a286677986c
work_keys_str_mv	AT xiaolongli fastdiffusionofdomesticatedmaizetotemperatezones AT yinqiaojian fastdiffusionofdomesticatedmaizetotemperatezones AT chuanxiaoxie fastdiffusionofdomesticatedmaizetotemperatezones AT junwu fastdiffusionofdomesticatedmaizetotemperatezones AT yunbixu fastdiffusionofdomesticatedmaizetotemperatezones AT chengzou fastdiffusionofdomesticatedmaizetotemperatezones
_version_	1718394051374350336

Fast diffusion of domesticated maize to temperate zones

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