Genome-wide Association Mapping of Cold Tolerance Genes at the Seedling Stage in Rice.
Genome-wide Association Mapping of Cold Tolerance Genes at the Seedling Stage in Rice.
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水稻苗期耐寒基因全基因组关联图谱
DOI：
10.1186/s12284-016-0133-2
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发表时间：
2016-12
期刊：
影响因子：
--
通讯作者：
Wang GL
中科院分区：
文献类型：
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作者：
Wang D;Liu J;Li C;Kang H;Wang Y;Tan X;Liu M;Deng Y;Wang Z;Liu Y;Zhang D;Xiao Y;Wang GL
水稻是一种温度敏感型作物，在温带和亚热带地区受到低温的严重影响。为了了解水稻耐冷性的遗传基础，我们对来自82个国家的295个水稻品种进行了苗期耐冷性鉴定。结果表明，温带和热带粳稻品种对低温胁迫的耐受性均高于籼稻和AUS品种。利用RDP1的耐冷性表型和44kSNP芯片数据集，对CTS的数量性状基因座(QTL)进行了全基因组关联定位。分析确定了位于11条染色体上的67个与CTS相关的QTL。其中56个QTL位于未知耐冷性相关QTL的区域。我们的研究为水稻耐冷性的遗传结构提供了新的信息，同时也发现了高耐冷性的品种和与CTS相关的SNP标记，这将是有用的水稻改良。本文的在线版本(doi：10.1186/s12284-0160133-2)包含补充材料，授权用户可以使用。
Rice is a temperature-sensitive crop and its production is severely affected by low temperature in temperate and sub-tropical regions. To understand the genetic basis of cold tolerance in rice, we evaluated the cold tolerance at the seedling stage (CTS) of 295 rice cultivars in the rice diversity panel 1 (RDP1), these cultivars were collected from 82 countries. The evaluations revealed that both temperate and tropical japonica rice cultivars are more tolerant to cold stress than indica and AUS cultivars. Using the cold tolerance phenotypes and 44 K SNP chip dataset of RDP1, we performed genome-wide association mapping of quantitative trait loci (QTLs) for CTS. The analysis identified 67 QTLs for CTS that are located on 11 chromosomes. Fifty-six of these QTLs are located in regions without known cold tolerance-related QTLs. Our study has provided new information on the genetic architecture of rice cold tolerance and has also identified highly cold tolerant cultivars and CTS-associated SNP markers that will be useful rice improvement. The online version of this article (doi:10.1186/s12284-016-0133-2) contains supplementary material, which is available to authorized users.