文献类型： 外文期刊
作者： Dong, Shiqing 1 ; Dong, Xianxin 1 ; Han, Xiaokang 1 ; Zhang, Fan 4 ; Zhu, Yu 1 ; Xin, Xiaoyun 1 ; Wang, Ying 1 ; Hu, Yuan 1 ;
作者机构： 1.Fudan Univ, Sch Life Sci, State Key Lab Genet Engn, Shanghai 200438, Peoples R China
2.Fudan Univ, Engn Res Ctr Gene Technol, Sch Life Sci, Minist Educ, Shanghai 200438, Peoples R China
3.Beijing Normal Univ Zhuhai, Adv Inst Nat Sci, Zhuhai 440400, Peoples R China
4.Chinese Acad Agr Sci, Inst Crop Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Beijing 100101, Peoples R China
5.Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China
6.Jiangxi Agr Univ, Coll Agron, Minist Educ, Key Lab Crop Physiol Ecol & Genet Breeding, Nanchang 330045, Jiangxi, Peoples R China
7.Shanghai Acad Agr Sci, Inst Crop Breeding & Cultivat, Shanghai 201403, Peoples R China
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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