Haplotype variation at Badh2, the gene determining fragrance in rice

Genomics

Jiwai He¹  Gaoneng Shao¹  Shaoqing Tang¹  Xiangjin Wei¹  Guiai Jiao¹  Ju Luo¹  Peisong Hu¹  Mingliang Chen¹  Yichao Hu¹  Lihong Xie¹ 

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

DOI  :  10.1016/j.ygeno.2012.11.010

学科分类：医学（综合）

来源: Academic Press

【 摘 要 】

Fragranceisanimportantcomponentofend-usequalityinrice.Asetof516fragrantriceaccessionsweregenotypedandover80%ofthemcarriedthebadh2.7allele.Asubsetof144mostlyfragrantaccessions,includingnineofOryzarufipogon,wasthensubjectedtoadetaileddiversityandhaplotypeanalysis.TheleveloflinkagedisequilibriumintheBadh2regionwashigheramongthefragrantaccessions.Re-sequencingintheBadh2regionshowedthatbadh2.7,badh2.2andbadh2.4ndash;5allaroseinthejaponicagenepool,andspreadlaterintotheindicagenepoolasaresultofdeliberatecrossing.However,loss-of-functionallelesofBadh2arealsofoundintheindicagenepools,andthentransferredintojaponica.EvidenceforthreenewpossibleFNPswasobtainedfromtheBadh2sequenceof62fragrantaccessions.Basedonthesedata,wehaveelaboratedamodelfortheevolutionofBadh2anditsparticipationinthericedomesticationprocess.

【 授权许可】

Unknown   

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