数字农科院2.0

dCAPS Markers Developed For Nitrate Transporter Genes Tanrt2L12S Associating With 1000-Grain Weight In Wheat

文献类型： 外文期刊

作者： Huang, JF; Li, L; Mao, XG; Wang, JY; Liu, HM; Li, CN; Jing, RL

作者机构：

关键词： Triticum Aestivum L.; Tanrt2L12; Association Analysis; Single Nucleotide Polymorphism; Dcaps Marker; Haplotypes

期刊名称： JOURNAL OF INTEGRATIVE AGRICULTURE

ISSN： 2095-3119

年卷期： 2020 年 19 卷 6 期

页码：

收录情况： JCR（2021版） ; CSCD（2020-2021年度） ; 农林核心（2020版） ; 科技核心（2020版）

摘要： Nitrate transporters (NRTs) are regulators of nitrate assimilation and transport. The genome sequences of TaNRT2L12-A, -B and -Dwere cloned from wheat (Triticum aestivum L.), and polymorphisms were analyzed by sequencing. TaNRT2L12-D in a germplasm population was highly conserved. However, 38 single nucleotide polymorphisms (SNPs) in TaNRT2L12-A coding region and 11 SNPs in TaNRT2L12-B coding region were detected. Two derived cleaved amplified polymorphic sequences (dCAPS) markers A-CSNP1 and A-CSNP2 were developed for TaNRT2L12-A based on SNP-351 and SNP-729, and three haplotypes were identified in the germplasm population. B-CSNP1 and B-CSNP2 were developed for TaNRT2L12-EI based on SNP-237 and SNP-1 227, and three haplotypes were detected in the germplasm population. Association analyses between the markers and agronomic traits in 30 environments and phenotypic comparisons revealed that A-CSNP2-A is a superior allele of shorter plant height (PH), length of penultimate internode (LPI) and peduncle length (PL), B-CSNP2-G is a superior allele of higher grain number per spike (GNS). Hap-6B-1 containing both superior alleles B-CSNP1-C and B-CSNP2-A is a superior haplotype of 1 000-grain weight (TGW). Expression analysis showed that TaNRT2L12-B is mainly expressed in the root base and regulated by nitrate. Therefore, TaNRT2L12 may be involved in nitrate transport and signaling to regulate TGW in wheat. The superior alleles and dCAPS markers of TaNRT2L12-AIB are beneficial to genetic improvement and germplasm enhancement with molecular markers-assisted selection.

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