Identification and genome-wide association analysis of wheat FHB resistance genes.

IF 4.4 2区农林科学 Q1 PLANT SCIENCES

Plant disease Pub Date : 2025-04-30 DOI:10.1094/PDIS-02-25-0298-RE

Hui Ren, Xiangxue Zhang, Yibo Zhang, Jingyao Wang, Ziyang Zhang, Muzi Cheng, Jiangna Han, Shengjie Liu, Mengke Zeng, Xunying Yuan, Jianhui Wu, Shuo Huang, Zhensheng Kang, Gang Li, Chunlian Li, Qingdong Zeng, De Jun Han

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引用次数: 0

Abstract

Fusarium head blight (FHB) is a devastating fungal disease in wheat, causing significant yield losses and deterioration of grain quality under severe conditions. In this study, a genome-wide association study was conducted with 448 accessions using genotyping data generated by the 660K SNP array. Nine relatively stable FHB resistance loci were identified on chromosomes 1B, 1D, 2D, 5B, 7A and 7B, respectively. Each QTL accounted for 4.1-10.4% of the phenotypic variation. Among them, QFhb.nwafu-7BS, and QFhb.nwafu-7BL are novel loci. Polymorphisms of flanking AQP marker AX-94527414 was developed for QFhb.nwafu-7BL, which could be useful for marker assisted selection of FHB resistance. Correlation analysis indicated that variation in FHB response was independent of plant height, spike length, and uppermost internode length across the three environments. These results offer new resistance resources for FHB resistance breeding and insights for marker-assisted selection and gene cloning.

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小麦赤霉病抗性基因的鉴定及全基因组关联分析。

小麦赤霉病（Fusarium head blight， FHB）是一种毁灭性的真菌病害，在恶劣的条件下会造成严重的产量损失和粮食品质恶化。本研究利用660K SNP阵列生成的基因分型数据，对448个品种进行了全基因组关联研究。在1B、1D、2D、5B、7A和7B染色体上分别鉴定出9个相对稳定的FHB抗性位点。每个QTL占表型变异的4.1-10.4%。其中，QFhb。nwafu-7BS和QFhb。nwafu-7BL是新的基因座。QFhb的侧翼AQP标记AX-94527414存在多态性。nwafu-7BL，可用于FHB抗性的标记辅助选择。相关分析表明，在3种环境中，FHB响应的变化与株高、穗长和最上部节间长无关。这些结果为FHB抗性育种提供了新的抗性资源，并为标记辅助选择和基因克隆提供了新的见解。

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来源期刊

Plant disease 农林科学-植物科学

CiteScore

5.10

自引率

13.30%

发文量

1993

审稿时长

2 months

期刊介绍： Plant Disease is the leading international journal for rapid reporting of research on new, emerging, and established plant diseases. The journal publishes papers that describe basic and applied research focusing on practical aspects of disease diagnosis, development, and management.