Journal Article

NOG1 increases grain production in rice

Sun, Xianyou, Tan, Lubin, Wu, Shuang, Zhu, Zuofeng, Cai, Hongwei, Liu, Fengxia, Fu, Yongcai, Huo, Xing, Gu, Ping, Xie, Daoxin, Sun, Chuanqing

2017

Overview

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. Rice grain yield is a quantitative trait determined by multiple genes. Here, the authors find NOG1 , which encodes an enoyl-CoA hydratase/isomerase in fatty acid β-oxidation pathway, can increase grain yield by enhancing grain number per panicle without affecting the other yield component traits.

• Publisher: Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
• Subject: 631/208/8 / 631/449/1870 / 631/449/711 / Crop production / Crop yield / Cultivars / Domestication / Enoyl-CoA hydratase / Genotype & phenotype / Grain / Humanities and Social Sciences / multidisciplinary / Oryza / Rice / Science / Science (multidisciplinary)