与从小麦栽培品种PS5导入普通小麦的两个抗白粉病基因连锁的微卫星标记。
Microsatellite markers linked to 2 powdery mildew resistance genes introgressed from Triticum carthlicum accession PS5 into common wheat.
作者信息
Zhu Zhendong, Zhou Ronghua, Kong Xiuying, Dong Yuchen, Jia Jizeng
机构信息
Laboratory of Crop Germplasm and Biotechnology, Ministry of Agricultural, Institute of Crop Germplasm Resources, Chinese Academy of Agricultural Sciences, Beijing.
出版信息
Genome. 2005 Aug;48(4):585-90. doi: 10.1139/g05-016.
Two dominant powdery mildew resistance genes introduced from Triticum carthlicum accession PS5 to common wheat were identified and tagged using microsatellite markers. The gene designated PmPS5A was placed on wheat chromosome 2AL and linked to the microsatellite marker Xgwm356 at a genetic distance of 10.2 cM. Based on the information of its origin, chromosome location, and reactions to 5 powdery mildew isolates, this gene could be a member of the complex Pm4 locus. The 2nd gene designated PmPS5B was located on wheat chromosome 2BL with 3 microsatellite markers mapping proximally to the gene: Xwmc317 at 1.1 cM; Xgwm111 at 2.2 cM; and Xgwm382 at 4.0 cM; and 1 marker, Xgwm526, mapping distally to the gene at a distance of 18.1 cM. Since this gene showed no linkage to the other 2 known powdery mildew resistance genes on wheat chromosome 2B, Pm6 and Pm26, we believe it is a novel powdery mildew resistance gene and propose to designate this gene as Pm33.
从硬粒小麦材料PS5导入普通小麦的两个显性抗白粉病基因，利用微卫星标记进行了鉴定和标记。命名为PmPS5A的基因位于小麦2AL染色体上，与微卫星标记Xgwm356连锁，遗传距离为10.2 cM。根据其起源、染色体定位及对5个白粉病菌株的反应信息，该基因可能是复杂的Pm4位点的成员。第二个命名为PmPS5B的基因位于小麦2BL染色体上，有3个微卫星标记在基因近端定位：Xwmc317距离1.1 cM；Xgwm111距离2.2 cM；Xgwm382距离4.0 cM；还有1个标记Xgwm526在基因远端定位，距离为18.1 cM。由于该基因与小麦2B染色体上其他两个已知抗白粉病基因Pm6和Pm26无连锁关系，我们认为它是一个新的抗白粉病基因，并建议将该基因命名为Pm33。
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