Rmg8 和 Rmg7 是小麦抗小麦赤霉病菌的基因，它们识别相同的无毒基因 AVR-Rmg8。
Rmg8 and Rmg7, wheat genes for resistance to the wheat blast fungus, recognize the same avirulence gene AVR-Rmg8.
机构信息
Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan.
出版信息
Mol Plant Pathol. 2018 May;19(5):1252-1256. doi: 10.1111/mpp.12609. Epub 2017 Dec 10.
Abstract
Rmg8 and Rmg7 are genes for resistance to the wheat blast fungus (Pyricularia oryzae), located on chromosome 2B in hexaploid wheat and chromosome 2A in tetraploid wheat, respectively. AVR-Rmg8, an avirulence gene corresponding to Rmg8, was isolated from a wheat blast isolate through a map-based strategy. The cloned fragment encoded a small protein containing a putative signal peptide. AVR-Rmg8 was recognized not only by Rmg8, but also by Rmg7, suggesting that these two resistance genes are equivalent to a single gene from the viewpoint of resistance breeding.
摘要
Rmg8 和 Rmg7 是分别位于六倍体小麦 2B 染色体和四倍体小麦 2A 染色体上对小麦穗发芽真菌（Pyricularia oryzae）具有抗性的基因。通过基于图谱的策略，从一个小麦穗发芽分离物中分离出了一个与 Rmg8 对应的无毒基因 AVR-Rmg8。该克隆片段编码一个含有假定信号肽的小蛋白。AVR-Rmg8 不仅被 Rmg8 识别，也被 Rmg7 识别，这表明从抗性育种的角度来看，这两个抗性基因等同于单个基因。
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