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OsPDCD5 negatively regulates plant architecture and grain yield in rice

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

in Agricultural Sciences / Agronomic crops / Apoptosis / Apoptosis Regulatory Proteins - genetics / Apoptosis Regulatory Proteins - metabolism / Biological Sciences / Biosynthesis / Cell death / CRISPR / Crop yield / Cultivars / Cytokinins / Cytokinins - metabolism / Edible Grain - genetics / Edible Grain - growth & development / Gene Expression Regulation, Plant / Gibberellins / Gibberellins - metabolism / Grain / Indoleacetic Acids - metabolism / Mutagenesis / Mutation / Oryza - genetics / Oryza - growth & development / Plant Breeding / Plant Proteins - genetics / Plant Proteins - metabolism / Plant Structures - genetics / Plant Structures - growth & development / Plants, Genetically Modified / Protein Binding / Rice / Signal Transduction - genetics / Site-directed mutagenesis / Transcriptomes

2021

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2021

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2021

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Journal Article

OsPDCD5 negatively regulates plant architecture and grain yield in rice

Xin, Yeyun,

Niu, Fuan,

Huang, Zhou,

Dong, Shiqing,

He, Haohua,

Zhao, Bingran,

Wang, Ying,

Luo, Xiaojin,

Yuan, Dingyang,

Yuan, Longping,

Wang, Jianping,

Dong, Xianxin,

Zhang, Fan,

Hu, Zejun,

Han, Xiaokang,

Xin, Xiaoyun,

Fu, Junru,

Mao, Bigang,

Cao, Liming,

Yang, Jinshui,

Zhu, Yu,

Yan, Peiwen,

Hu, Yuanyi,

Tan, Yanning

2021

Overview

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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Publisher

National Academy of Sciences

Subject

Agricultural Sciences

/ Agronomic crops

/ Apoptosis

/ Apoptosis Regulatory Proteins - genetics

/ Apoptosis Regulatory Proteins - metabolism

/ Biological Sciences

/ Biosynthesis