NOG1 increases grain production in rice

Xing Huo, Shuang Wu, Zuofeng Zhu, Fengxia Liu, Yongcai Fu, Hongwei Cai, Xianyou Sun, Ping Gu, Daoxin Xie, Lubin Tan () and Chuanqing Sun ()
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Xing Huo: China Agricultural University
Shuang Wu: China Agricultural University
Zuofeng Zhu: China Agricultural University
Fengxia Liu: China Agricultural University
Yongcai Fu: China Agricultural University
Hongwei Cai: China Agricultural University
Xianyou Sun: China Agricultural University
Ping Gu: China Agricultural University
Daoxin Xie: School of Life Sciences, Tsinghua University
Lubin Tan: China Agricultural University
Chuanqing Sun: China Agricultural University

Nature Communications, 2017, vol. 8, issue 1, 1-11

Abstract: Abstract During rice domestication and improvement, increasing grain yield to meet human needs was the primary objective. Rice grain yield is a quantitative trait determined by multiple genes, but the molecular basis for increased grain yield is still unclear. Here, we show that NUMBER OF GRAINS 1 (NOG1), which encodes an enoyl-CoA hydratase/isomerase, increases the grain yield of rice by enhancing grain number per panicle without a negative effect on the number of panicles per plant or grain weight. NOG1 can significantly increase the grain yield of commercial high-yield varieties: introduction of NOG1 increases the grain yield by 25.8% in the NOG1-deficient rice cultivar Zhonghua 17, and overexpression of NOG1 can further increase the grain yield by 19.5% in the NOG1-containing variety Teqing. Interestingly, NOG1 plays a prominent role in increasing grain number, but does not change heading date or seed-setting rate. Our findings suggest that NOG1 could be used to increase rice production.

Date: 2017
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DOI: 10.1038/s41467-017-01501-8

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