Dissecting the molecular basis of the ultra-large grain formation in rice

IF 8.1 1区生物学 Q1 PLANT SCIENCES New Phytologist Pub Date : 2024-07-28 DOI:10.1111/nph.20001

Fengcheng Li, Lian Wu, Xiang Li, Yanan Chai, Nan Ruan, Ye Wang, Na Xu, Zhiwen Yu, Xiaoche Wang, Hao Chen, Jiahao Lu, Hai Xu, Zhengjin Xu, Wenfu Chen, Quan Xu

引用次数: 0

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剖析水稻超大谷粒形成的分子基础。

米粒的形状不仅决定了千粒重，而且与米粒的品质密切相关。在此，我们发现了一个千粒重超过 60 克的超大粒品种（ULG）。通过对 QTL、BSA、全新基因组组装、转录测序和基因编辑的综合分析，我们剖析了 ULG 形成的分子基础。ULG的优势等位基因至少来自四个已知的谷粒形成基因，即OsLG3、OsMADS1、GS3和GL3.1，以及一个编码富亮氨酸重复受体样激酶的新基因座qULG2-b。在转基因植物和近等基因系中证实了OsLG3、OsMADS1、GS3和GL3.1对谷粒大小的共同影响。转录组分析确定了这四个基因共同调控的 112 个基因，这些基因主要参与光合作用和碳代谢。通过利用这些基因的多效性，我们提高了水稻变种 SN265 的谷粒产量、外观和抗逆性。除了展示多个粒度调控基因的金字塔作用可以产生超低粒径外，我们的研究还为利用粒度调控基因的多效性改良水稻品种提供了一个理论框架和宝贵的基因组资源。

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来源期刊

New Phytologist 生物-植物科学

自引率

5.30%

发文量

728

期刊介绍： New Phytologist is an international electronic journal published 24 times a year. It is owned by the New Phytologist Foundation, a non-profit-making charitable organization dedicated to promoting plant science. The journal publishes excellent, novel, rigorous, and timely research and scholarship in plant science and its applications. The articles cover topics in five sections: Physiology & Development, Environment, Interaction, Evolution, and Transformative Plant Biotechnology. These sections encompass intracellular processes, global environmental change, and encourage cross-disciplinary approaches. The journal recognizes the use of techniques from molecular and cell biology, functional genomics, modeling, and system-based approaches in plant science. Abstracting and Indexing Information for New Phytologist includes Academic Search, AgBiotech News & Information, Agroforestry Abstracts, Biochemistry & Biophysics Citation Index, Botanical Pesticides, CAB Abstracts®, Environment Index, Global Health, and Plant Breeding Abstracts, and others.