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第一作者:Michael Abrouk
第一单位:阿卜杜拉国王科技大学
通讯作者:Simon G. Krattinger
Abstract
大背景:Sustainable food production in the context of climate change necessitates diversification of agriculture and a more efficient utilization of plant genetic resources.
小背景:Fonio millet (Digitaria exilis) is an orphan African cereal crop with a great potential for dryland agriculture. 主要研究:Here, we establish high-quality genomic resources to facilitate fonio improvement through molecular breeding. 结果1-参考基因组与重测序:These include a chromosome-scale reference assembly and deep re-sequencing of 183 cultivated and wild Digitaria accessions, enabling insights into genetic diversity, population structure, and domestication. 结果2-群体多态性:Fonio diversity is shaped by climatic, geographic, and ethnolinguistic factors. 结果3-选择:Two genes associated with seed size and shattering showed signatures of selection. 结果4-育种改良:Most known domestication genes from other cereal models however have not experienced strong selection in fonio, providing direct targets to rapidly improve this crop for agriculture in hot and dry environments.
摘 要
全球气候多变环境下的可持续性粮食生产需要农业的多样化以及更加高效的植物遗传资源利用。福尼奥小米(Digitaria exilis)是非洲的孤生谷类作物,具有应用于旱地农业的巨大潜力。本文中,作者构建了福尼奥小米的高质量参考基因组资源,有利于促进福尼奥小米的分子遗传改良。作者获得了一个染色体级别的参考基因组,对183份栽培种和野生种Digitaria属材料进行了全基因组重测序,研究了群体遗传多态性、群体结构以及驯化。福尼奥小米群体多态性受到气候、地理以及民族区域的影响。作者发现两个与种子大小、落粒性相关的基因上存在选择信号。大多数从其它谷物研究中获知的驯化基因在福尼奥小米中还未受到较强的选择作用,这为未来培育高温和干旱环境下的改良品种提供了直接的靶基因。
通讯作者
**Simon G. Krattinger** 个人简介: 2005年,瑞士苏黎世大学,学士; 2009年,瑞士苏黎世大学,博士。 研究方向: 谷物基因组学与植物-病原菌相互作用。
doi: 10.1038/s41467-020-18329-4
Journal: Nature Communications
Published date: September 08, 2020
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