文献类型： 外文期刊

作者： Shao, Gaoneng ¹ ; Tang, Shaoqing ¹ ; Chen, Mingliang ² ; Wei, Xiangjin ¹ ; He, Jiwai ¹ ; Luo, Ju ¹ ; Jiao, Guiai ¹ ; Hu, ¹ ;

作者机构： 1.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 310006, Zhejiang, Peoples R China

2.Jiangxi Acad Agr Sci, Nanchang 330200, Peoples R China

3.Hunan Agr Univ, Changsha 410128, Hunan, Peoples R China

关键词： Rice fragrance;Badh2/badh2;Gene evolution;Functional nucleotide polymorphisms

期刊名称：GENOMICS （ 影响因子：5.736； 五年影响因子：4.939 ）

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收录情况： SCI

摘要： Fragrance is an important component of end-use quality in rice. A set of 516 fragrant rice accessions were ge-notyped 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 Mica 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.