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Candidate Genes Association Study To Identify Allele-Specific Snp Marker Of Omega-3 Fatty Acid In Brassica Napus

文献类型： 外文期刊

作者： Zafar, S; Tang, MQ; Liu, SY; Tan, XL

作者机构：

关键词： Brassica Napus; Omega-3 Fatty Acid; Saccharomyces Cerevisiae; Single Nuceotide Polymorphism

期刊名称： JOURNAL OF PLANT PHYSIOLOGY

ISSN： 0176-1617

年卷期： 2020 年 247 卷

页码：

收录情况： JCR（2021版）

摘要： Due to the rapid decline in oceanic fish stock, omega-3 fatty acid (C18:3) has attracted serious attention and, hence, the identification of genotypes with high omega-3 content has become the main objective of Brassica napus (rapeseed) breeding. A candidate genes association study permitted us to delineate a genomic region linked to omega-3 content, offering a detailed understanding of the complex genetic mechanism of fatty acid biosynthesis in B. napus. Herein, the candidate genes association study, conducted on 324 genetically diverse rapeseed accessions, detected 114 single nucleotide polymorphisms (SNPs) associated with omega-3 fatty acid. Furthermore, these loci were functionally characterized in Saccharomyces cerevisiae. These associated loci were selected based on their contribution to a high C18:3 ratio, and the selected candidate loci were validated using allele-specific SNPs markers in an inbred population through polymerase chain reaction (PCR). These findings may contribute to improving the fatty acid composition by marker-based breeding and will facilitate the development of rapeseed varieties with high omega-3 content.

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