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A dCAPS marker developed from a stress associated protein gene TaSAP7-B governing grain size and plant height in wheat

文献类型： 外文期刊

作者： Wang Yi-xue 1 ; Xu Qiao-fang 2 ; Chang Xiao-ping 2 ; Hao Chen-yang 2 ; Li Run-zhi 1 ; Jing Rui-lian 2 ;

作者机构： 1.Shanxi Agr Univ, Coll Agron, Taigu 030801, Peoples R China

2.Chinese Acad Agr Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Inst Crop Sci, Beijing 100081, Peoples R China

关键词： Triticum aestivum L.;TaSAP7-B;single nucleotide polymorphism;association analysis;plant height;1000-grain weight

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2018 年 17 卷 2 期

页码：

收录情况： SCI

摘要： Stress associated proteins (SAPs) are the A20/AN1 zinc-finger proteins which confer to abiotic stresses in plants. In this study, TaSAP7-B, including two AN1 domains, was isolated from B genome of wheat (Triticum aestivum L.). Sequencing analysis on TaSAP7-B illustrated one InDel (insertion-deletion) and one SNP (single nucleotide polymorphism) in the promoter region while no diversity was observed in the coding region. On the basis of SNP in the promoter region (-260 bp), a dCAPS (derived cleaved amplified polymorphic sequences) marker SNP-260 was developed for TaSAP7-B. Using a natural population consisting of 262 wheat accessions, significant associations were detected between the marker SNP-260 and agronomic traits, such as plant height (PH), peduncle length (PL), length of penultimate internode (LPI), number of spike per plant (NSP), and 1000-grain weight (TGW). Two genotypes were identified using marker SNP-260 in the natural population. Among them, the genotypes possessing C allele exhibited a higher TGW and shorter PH than the T genotypes. Hence, base C was considered as the superior allele. The dCAPS marker of TaSAP7-B can be instrumental for marker-assisted selection for high grain size and short plant height.

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