Convergent selection of a WD40 protein that enhances grain yield in maize and rice-Reference-Cited by-同舟云学术

Convergent selection of a WD40 protein that enhances grain yield in maize and rice

Published:2022-03-25 Issue:6587 Volume:375 Page:
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Chen Wenkang¹^ORCID,Chen Lu²^ORCID,Zhang Xuan¹^ORCID,Yang Ning²³^ORCID,Guo Jianghua¹^ORCID,Wang Min¹^ORCID,Ji Shenghui¹^ORCID,Zhao Xiangyu¹^ORCID,Yin Pengfei¹^ORCID,Cai Lichun¹^ORCID,Xu Jing¹^ORCID,Zhang Lili¹^ORCID,Han Yingjia¹^ORCID,Xiao Yingni¹^ORCID,Xu Gen¹^ORCID,Wang Yuebin²^ORCID,Wang Shuhui¹^ORCID,Wu Sheng¹^ORCID,Yang Fang²³^ORCID,Jackson David²⁴^ORCID,Cheng Jinkui¹⁵^ORCID,Chen Saihua⁶^ORCID,Sun Chuanqing¹^ORCID,Qin Feng¹⁵^ORCID,Tian Feng¹⁵^ORCID,Fernie Alisdair R.⁷^ORCID,Li Jiansheng¹⁵^ORCID,Yan Jianbing²³^ORCID,Yang Xiaohong¹⁵^ORCID

Affiliation:

1. State Key Laboratory of Plant Physiology and Biochemistry and National Maize Improvement Center of China, China Agricultural University, Beijing 100193, China.

2. National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China.

3. Hubei Hongshan Laboratory, Wuhan 430070, China.

4. Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.

5. Center for Crop Functional Genomics and Molecular Breeding, China Agricultural University, Beijing 100193, China.

6. Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, Jiangsu 225009, China.

7. Department of Molecular Physiology, Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany.

Abstract

A better understanding of the extent of convergent selection among crops could greatly improve breeding programs. We found that the quantitative trait locus KRN2 in maize and its rice ortholog, OsKRN2 , experienced convergent selection. These orthologs encode WD40 proteins and interact with a gene of unknown function, DUF1644, to negatively regulate grain number in both crops. Knockout of KRN2 in maize or OsKRN2 in rice increased grain yield by ~10% and ~8%, respectively, with no apparent trade-offs in other agronomic traits. Furthermore, genome-wide scans identified 490 pairs of orthologous genes that underwent convergent selection during maize and rice evolution, and these were enriched for two shared molecular pathways. KRN2 , together with other convergently selected genes, provides an excellent target for future crop improvement.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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