Haplotype variation at Badh2, the gene determining fragrance in rice
Haplotype variation at Badh2, the gene determining fragrance in rice
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Badh2 的单倍型变异，决定水稻香味的基因
DOI：
10.1016/j.ygeno.2012.11.010
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发表时间：
2013-02-01
期刊：
影响因子：
4.4
通讯作者：
Hu, Peisong
中科院分区：
文献类型：
--
作者：
Shao, Gaoneng;Tang, Shaoqing;Hu, Peisong
香气是大米最终使用品质的重要组成部分。对516份香稻材料进行了基因分型，其中80%以上的材料携带Badh2.7等位基因。然后对144份主要是芳香的材料进行了详细的多样性和单倍型分析，其中包括9份普通野生稻。香料中Badh2区的连锁不平衡程度较高。在Badh2区的重新测序表明，badh2.7、badh2.2和badh2.4-5都出现在水稻基因库中，后来由于故意杂交而扩散到籼稻基因库中。然而，Badh2的功能丧失等位基因也存在于水稻胚乳中，并被转移到了水稻体内。从62份香料的Badh2序列中获得了3个新的可能的FNPs的证据。基于这些数据，我们详细阐述了Badh2的进化及其参与水稻驯化过程的模型。(C)2012 Elsevier Inc.保留所有权利。
Fragrance is an important component of end-use quality in rice. A set of 516 fragrant rice accessions were genotyped and over 80% of them carried the badh2.7 allele. A subset of 144 mostly fragrant accessions, including nine of Oryza rufipogon, was then subjected to a detailed diversity and haplotype analysis. The level of linkage disequilibrium in the Badh2 region was higher among the fragrant accessions. Re-sequencing in the Badh2 region showed that badh2.7, badh2.2 and badh2.4-5 all arose in the japonica genepool, and spread later into the indica genepool as a result of deliberate crossing. However, loss-of-function alleles of Badh2 are also found in the indica genepools, and then transferred into japonica. Evidence for three new possible FNPs was obtained from the Badh2 sequence of 62 fragrant accessions. Based on these data, we have elaborated a model for the evolution of Badh2 and its participation in the rice domestication process. (C) 2012 Elsevier Inc. All rights reserved.