Arabinoxylan profiles in Chinese winter wheat: Novel QTL and molecular marker

文献类型： 外文期刊

第一作者： Chen, Tiantian

作者： Chen, Tiantian;Gong, Xue;Zhi, Lei;Zhang, Hongyu;Cao, Shuanghe;Liu, Dan;Zhao, Cong;Zhang, Yan;Liu, Jingdong;He, Zhonghu;Zhang, Yong;Tian, Wenfei;Chen, Tiantian;Liu, Jingdong;He, Zhonghu;Zhang, Yong;Tian, Wenfei;He, Zhonghu;Tian, Wenfei;Ni, Yongjing;Zhang, Yong

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关键词： Bread wheat; Arabinoxylan; QTL mapping; KASP marker

期刊名称：JOURNAL OF CEREAL SCIENCE （ 影响因子：3.7； 五年影响因子：4.3 ）

ISSN： 0733-5210

年卷期： 2024 年 120 卷

页码：

收录情况： SCI

摘要： Arabinoxylan (AX) is a significant component of dietary fiber (DF) present in both whole meal and refined flour of wheat. Identifying genetic loci associated with AX content and developing molecular markers can facilitate the breeding of wheat cultivars with increased AX levels through marker-assisted selection (MAS). In our study, we analyzed the AX profiles of 262 recombinant inbred lines (RIL) derived from Zhongmai 578/Jimai 22, along with a natural population consisting of 161 representative wheat varieties in China. Our investigation revealed that Taishan 1 and Shan 715 exhibit WE-AX content comparable to or even superior to Yumai 34, a current benchmark cultivar for high WE-AX content. Additionally, we discovered a novel quantitative trait locus (QTL) in the RIL population, explaining 6.9-19.6% of the phenotypic variance of water-extractable AX (WE-AX) and 7.3-10.2% of the phenotypic variance of total AX (TOT-AX). Notably, a high-throughput competitive allelespecific PCR (KASP) marker was developed and validated in the natural population, expanding our understanding of germplasm with high AX content and providing molecular markers that can be utilized in markerassisted selection for high AX wheat.

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