OsPDCD5 negatively regulates plant architecture and grain yield in rice

文献类型： 外文期刊

第一作者： Dong, Shiqing

作者： Dong, Shiqing;Dong, Xianxin;Han, Xiaokang;Zhu, Yu;Xin, Xiaoyun;Wang, Ying;Yan, Peiwen;Yang, Jinshui;Luo, Xiaojin;Dong, Shiqing;Dong, Xianxin;Han, Xiaokang;Zhu, Yu;Xin, Xiaoyun;Wang, Ying;Yan, Peiwen;Yang, Jinshui;Luo, Xiaojin;Dong, Xianxin;Zhang, Fan;Hu, Yuanyi;Yuan, Dingyang;Xin, Yeyun;Tan, Yanning;Mao, Bigang;Zhao, Bingran;Yuan, Longping;Wang, Jianping;Huang, Zhou;He, Haohua;Fu, Junru;Luo, Xiaojin;Niu, Fuan;Hu, Zejun;Cao, Liming

作者机构：

关键词： OsPDCD5; grain yield; plant architecture; programmed cell death; polar auxin transport

期刊名称：PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA （ 影响因子：11.205； 五年影响因子：12.291 ）

ISSN： 0027-8424

年卷期： 2021 年 118 卷 29 期

页码：

收录情况： SCI

摘要： Plant architecture is an important agronomic trait that affects crop yield. Here, we report that a gene involved in programmed cell death, OsPDCD5, negatively regulates plant architecture and grain yield in rice. We used the CRISPR/Cas9 system to introduce loss-of-function mutations into OsPDCD5 in 11 rice cultivars. Targeted mutagenesis of OsPDCD5 enhanced grain yield and improved plant architecture by increasing plant height and optimizing panicle type and grain shape. Transcriptome analysis showed that OsPDCD5 knockout affected auxin biosynthesis, as well as the gibberellin and cytokinin biosynthesis and signaling pathways. OsPDCD5 interacted directly with OsAGAP, and OsAGAP positively regulated plant architecture and grain yield in rice. Collectively, these findings demonstrate that OsPDCD5 is a promising candidate gene for breeding super rice cultivars with increased yield potential and superior quality.

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