A Combination of Long-Day Suppressor Genes Contributes to the Northward Expansion of Rice

文献类型： 外文期刊

第一作者： Cui, Yongxia

作者： Cui, Yongxia;Wang, Junrui;Feng, Li;Liu, Sha;Li, Jiaqi;Qiao, Weihua;Song, Yue;Cheng, Yunlian;Zhang, Lifang;Zheng, Xiaoming;Yang, Qingwen;Zhang, Zongqiong

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关键词： Oryza sativa; long-day suppressor genes; domestication; northward expansion; heading date

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.753； 五年影响因子：6.612 ）

ISSN： 1664-462X

年卷期： 2020 年 11 卷

页码：

收录情况： SCI

摘要： Growing cultivated rice with a moderate heading date is the key to expanding its cultivation area and maintaining stable yields. The genes that regulate heading date are largely cloned; however, it remains unclear how genetic mutations and their combinations affect the heading date and adaptability of cultivated rice. Here, we report the analysis of genetic variation in eight long-day flowering suppressor genes (Hd1, DTH8, Ghd7, OsCOL4, DTH7, Hd6, Se5, andPhyB) and the phylogenetic relationship of eight genes. Genetic variations inDTH8,Ghd7,Hd1,DTH7,PhyB, andOsCOL4are correlated with differences in heading date and the correlation between the genetic diversity ofHd6andSe5and rice heading data are weak. One group of haplotypes ofDTH8,Ghd7,Hd1,DTH7,PhyB, andOsCOL4are associated with earlier heading dates and appear to have accumulated during the northward expansion of rice cultivation. A minimum of four group A alleles ofDTH8,Ghd7,Hd1,DTH7,PhyB, andOsCOL4are required for the growth of cultivated rice at latitudes above 30 degrees N. This study presents a preliminary investigation of the genetic patterns and adaptation mechanisms of long-day flowering suppressor genes and provides a useful reference for the molecular breeding of rice cultivars for various environments and farming systems.

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