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A genomic perspective on the important genetic mechanisms of upland adaptation of rice

文献类型： 外文期刊

作者： Lyu, Jun 1 ; Li, Baoye 2 ; He, Weiming 3 ; Zhang, Shilai 2 ; Gou, Zhiheng 1 ; Zhang, Jing 2 ; Meng, Liyun 4 ; Li, Xin 5 ; Ta 1 ;

作者机构： 1.Chinese Acad Sci, Kunming Inst Zool, CAS Max Planck Jr Res Grp, State Key Lab Genet Resources & Evolut, Kunming 650223, Peoples R China

2.Yunnan Acad Agr Sci, Food Crops Res Inst, Kunming 650205, Peoples R China

3.BGI Shenzhen, Shenzhen 518083, Peoples R China

4.Inner Mongolia Agr Univ, Hohhot 010018, Peoples R China

5.Johns Hopkins Univ, Sch Med Baltimore, Ctr Epigenet, Balti

关键词： Upland rice;Upland adaptation;Genetic mechanisms;Phylogenetics;Population structure;Artificial selection

期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.215； 五年影响因子：4.96 ）

ISSN： 1471-2229

年卷期： 2014 年 14 卷

页码：

收录情况： SCI

摘要： Background: Cultivated rice consists of two important ecotypes, upland and irrigated, that have respectively adapted to either dry land or irrigated cultivation. Upland rice, widely adopted in rainfed upland areas in virtue of its little water requirement, contains abundant untapped genetic resources, such as genes for drought adaptation. With water shortage exacerbated and population expanding, the need for breeding crop varieties with drought adaptation becomes more and more urgent. However, a previous oversight in upland rice research reveals little information regarding its genetic mechanisms for upland adaption, greatly hindering progress in harnessing its genetic resources for breeding and cultivation. Results: In this study, we selected 84 upland and 82 irrigated accessions from all over the world, phenotyped them under both irrigated and dry land environments, and investigated the phylogenetic relations and population structure of the upland ecotype using whole genome variation data. Further comparative analysis yields a list of differentiated genes that may account for the phenotypic and physiological differences between upland and irrigated rice. Conclusions: This study represents the first genomic investigation in a large sample of upland rice, providing valuable gene list for understanding upland rice adaptation, especially drought-related adaptation, and its subsequent utilization in modern agriculture.

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