Identification and Precise Mapping of PmHSM, a Novel Recessive Powdery Mildew Resistance Allele from Wheat Landrace Heshangmai.

IF 4.4 2区 农林科学 Q1 PLANT SCIENCES
Bisheng Fu, Qiaofeng Zhang, Jin Cai, Wei Guo, Caiyun Liu, Ying Liu, Wenling Zhai, Shuangjun Gong, Jizhong Wu
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引用次数: 0

Abstract

Common wheat (Triticum aestivum L.) is the world's primary food crop, and ensuring its safe production is of utmost importance for global peace and human development. However, the continuous threat of fungal diseases, including Fusarium head scab, rusts, sharp eyespot, and powdery mildew (PM), poses a significant challenge to production. PM caused by Blumeria graminis f. sp. tritici causes substantial yield losses. Heshangmai (HSM), a wheat landrace originating from Sichuan Province, possesses high levels of resistance to PM. A comprehensive study using a large segregating population of a cross between HSM and Ningmaizi119 (NMZ119) revealed a single recessive allele conferring resistance. The gene, provisionally designated PmHSM, was located on the long arm of chromosome 4A (4AL). Molecular marker analysis, a PM response array, and an allelism test indicated that PmHSM is a novel recessive resistance gene that shares an allelic relationship with PmHHXM. Thirteen simple sequence repeat markers were developed using the sequence information of the 4AL region in the Chinese spring reference sequence version 2.1. PmHSM was flanked by the markers Xmp1567 and Xmp1444 at genetic distances of 0.11 and 0.18 cM, respectively, and cosegregated with the markers Xmp1439/Xmp1440/Xmp1442.

鉴定和精确绘制小麦陆地品种和尚麦的新型隐性白粉病抗性等位基因 PmHSM。
普通小麦(Triticum aestivum L.)是世界上最主要的粮食作物,确保其安全生产对全球和平与人类发展至关重要。然而,真菌病害(包括头孢镰刀菌、锈病、尖眼病和白粉病)的持续威胁给生产带来了巨大挑战。由禾本科白粉病(Blumeria graminis f. sp. tritici,Bgt)引起的白粉病会造成巨大的产量损失。原产于四川省的小麦品种和尚麦(HSM)对白粉病具有很强的抗性。一项利用 HSM 与宁麦 119(NMZ119)杂交的大型分离群体进行的综合研究发现了一个具有抗性的单隐性等位基因。该基因被暂时命名为 PmHSM,位于染色体 4A 的长臂(4AL)上。分子标记分析、PM 反应阵列和等位基因测试表明,PmHSM 是一个新的隐性抗性基因,与 PmHHXM 有等位基因关系。利用中国春季参考序列 v2.1(CS RefSeq v2.1)中 4AL 区域的序列信息,开发了 13 个简单序列重复(SSR)标记。PmHSM与标记Xmp1567和Xmp1444的遗传距离分别为0.11 cM和0.18 cM,并与标记Xmp1439/Xmp1440/Xmp1442共分离。
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来源期刊
Plant disease
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.
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