Key Roles of De-Domestication and Novel Mutation in Origin and Diversification of Global Weedy Rice.
Key Roles of De-Domestication and Novel Mutation in Origin and Diversification of Global Weedy Rice.
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去驯化和新突变在全球杂草稻起源和多样化中的关键作用
DOI：
10.3390/biology10090828
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发表时间：
2021-08-26
期刊：
影响因子：
4.2
通讯作者：
Lu BR
中科院分区：
文献类型：
--
作者：
Zhu YQ;Fang J;Wang Y;Pang LH;Lu BR
杂草稻是危害世界各地稻田的一种有害杂草，对水稻产量和品质造成巨大损失。这种同种杂草的控制是困难的，由于丰富的遗传多样性与其复杂的起源和进化。应用不同的分子生物学方法，我们证明了杂草稻的多源性，主要来源于其栽培品种的祖先。杂草稻的起源和分化也与籼粳分化密切相关。此外，新的突变被确定，这可能会促进杂草稻的持续进化和遗传多样性。从这项研究中产生的知识提供了深刻的见解同种杂草的起源和演变，除了设计有效的措施来控制这些杂草。农业杂草由于其复杂的起源和丰富的遗传多样性，对可持续的作物生产构成了巨大的挑战。杂草稻（WD）在世界范围内危害稻田，造成水稻产量/品质的巨大损失。为了探索WD的起源和进化，我们分析了世界范围内杂草，野生和栽培水稻种子落粒基因（sh 4和qsh 1）的DNA序列多态性。我们还利用微卫星和插入/缺失分子指纹来确定它们的遗传关系和结构。结果表明，WD的多个起源与大多数样品已经从它们的栽培祖先和野生稻的少数样品进化。从去驯化进化而来的WD表现出与籼稻和粳稻分化相关的不同遗传结构。此外，仅在WD样品中鉴定的杂草独特的单倍型表明它们的新突变。本研究的结果表明，去驯化在WD起源中发挥着关键作用，其中籼型和粳型品种刺激了WD在各种农业生态系统中的进一步进化和分化。此外，新的突变促进了WD适应不同环境的持续进化和遗传多样性。从这项研究中产生的知识提供了深刻的见解同种杂草的起源和演变，除了设计有效的措施来控制这些杂草。
Weedy rice is a noxious weed infesting rice fields worldwide and causing tremendous losses of rice yield and quality. The control of this conspecific weed is difficult owing to abundant genetic diversity associated with its complex origins and evolution. Applying different molecular methods, we demonstrate the multiple origins of weedy rice with the major pathway from its cultivar progenitors. The origin and diversification of weedy rice are also closely associated with differentiation of indica-japonica rice varieties. In addition, novel mutations are identified, which may promote continued evolution and genetic diversity of weedy rice. Knowledge generated from this study provides deep insights into the origin and evolution of conspecific weeds, in addition to the design of effective measures to control these weeds. Agricultural weeds pose great challenges to sustainable crop production, owing to their complex origins and abundant genetic diversity. Weedy rice (WD) infests rice fields worldwide causing tremendous losses of rice yield/quality. To explore WD origins and evolution, we analyzed DNA sequence polymorphisms of the seed shattering genes (sh4 and qsh1) in weedy, wild, and cultivated rice from a worldwide distribution. We also used microsatellite and insertion/deletion molecular fingerprinting to determine their genetic relationship and structure. Results indicate multiple origins of WD with most samples having evolved from their cultivated progenitors and a few samples from wild rice. WD that evolved from de-domestication showed distinct genetic structures associated with indica and japonica rice differentiation. In addition, the weed-unique haplotypes that were only identified in the WD samples suggest their novel mutations. Findings in this study demonstrate the key role of de-domestication in WD origins, in which indica and japonica cultivars stimulated further evolution and divergence of WD in various agroecosystems. Furthermore, novel mutations promote continued evolution and genetic diversity of WD adapting to different environments. Knowledge generated from this study provides deep insights into the origin and evolution of conspecific weeds, in addition to the design of effective measures to control these weeds.
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影响因子：
64.8
作者：
Matsumoto, T;Wu, JZ;Sugiura, M
通讯作者：
Sugiura, M
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影响因子：
3.7
作者：
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影响因子：
4.6
作者：
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通讯作者：
Zhang, Youjun
影响因子：
2
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影响因子：
2.5
作者：
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