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Starch Bio-Synthetic Pathway Genes Contribute to Resistant Starch Content Differentiation in Bread Wheat

文献类型： 外文期刊

作者： Hou, Jinna 1 ; Deng, Hui 1 ; Wang, Yingdong 1 ; Liu, Congcong 1 ; Geng, Shenghui 1 ; Li, Wenxu 1 ; Qin, Maomao 1 ; Dai, Ziju 1 ; Shi, Xia 1 ; Yang, Pan 1 ; Tian, Baoming 2 ; Yao, Wen 3 ; Wu, Zhengqing 1 ; Lei, Zhensheng 1 ; Zhou, Zhengfu 1 ;

作者机构： 1.Henan Acad Agr Sci, Henan Inst Crop Mol Breeding, Zhengzhou 450001, Peoples R China

2.Zhengzhou Univ, Sch Agr Sci, Zhengzhou 450001, Peoples R China

3.Henan Agr Univ, Natl Key Lab Wheat & Maize Crop Sci, Zhengzhou 450002, Peoples R China

4.Shennong Lab, Zhengzhou 450002, Peoples R China

关键词： resistant starch; genetic loci; KASP marker; nutritional quality; wheat

期刊名称：AGRONOMY-BASEL （ 影响因子：3.949； 五年影响因子：4.117 ）

ISSN：

年卷期： 2022 年 12 卷 12 期

页码：

收录情况： SCI

摘要： Resistant starch (RS) is a special group of starches which are slowly degraded and rarely digested in the gastrointestinal tract. It was recognized as a new type of dietary fiber that improved cardiovascular, cerebrovascular, and intestinal health. Breeding high-RS-content wheat is one of the most efficient and convenient approaches for providing an adequate amount of RS for a healthy diet. However, studies which aim to genetically illustrate RS content in wheat are still rare. In the present study, a panel of 207 wheat varieties were collected world-wide and planted under three locations. The RS content of each variety was measured, and 14 additive genetic loci were found to stably exist under more than two environments. Meanwhile, four genes were recognized as the putative candidates with annotated functions of beta-amylase, alpha-1,4 glucan phosphorylase, sucrose transporter, and NAC domain protein. A kompetitive allele-specific PCR (KASP) marker was developed from the SNP AX-94546744, representing the genetic locus of beta-amylase located. The AX-94546744-T allele can significantly increase the RS content compared to the AX-94546744-C allele. The genetic loci and KASP marker associated with RS content may be useful for wheat germplasm cultivation and variety breeding with a high RS content, further helping to improve the nutritional quality in wheat.

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