Wheat powdery mildew resistance gene PmR2 as well as clone and application thereof

The invention provides a wheat powdery mildew resistance gene PmR2 as well as clone and application thereof. An amino acid sequence of the PmR2 is represented by SEQ ID NO. 2, and a nucleotide sequence of the PmR2 is represented by SEQ ID NO. 1. The invention further provides allelic genes PmR2-a and PmR2-b of the PmR2, and the allelic genes are respectively sourced from powdery mildew resistance triticumurartu materials PI428210 and PI428215. Gene coding sequences of the PmR2-a and the PmR2-b are respectively represented by SEQ ID NO. 3 and SEQ ID NO. 5. Compared with the PmR2, the gene coding sequences of the PmR2-a and the PmR2-b have differences in 240 bp deletion or insertion, but protein functions are similar, and the gene coding sequences of the PmR2-a and the PmR2-b have application potentials in resistance breeding. 本发明提供了小麦白粉病抗性基因及其克隆与应用。所述PmR2的氨基酸序列如SEQ ID NO.2所示，其核苷酸序列如SEQ ID NO.1所示。本发明还提供了基因的等位基因和，它们分别来源白粉病抗性乌拉尔图小麦材料PI428210和PI428215。、的基因编码序列如SEQ ID NO.3、SEQ ID NO.5所示。和的基因编码序列与比较具240 bp缺失或插入的差异，但