Qutob Dinah, Tedman-Jones Jennifer, Gijzen Mark
Agriculture and Agri-Food Canada, 1391 Sandford Street, London, Ontario N5V 4T3, Canada.
Trends Microbiol. 2006 Nov;14(11):470-3. doi: 10.1016/j.tim.2006.09.004. Epub 2006 Sep 25.
A new genetic locus mediating avirulence in the potato late blight pathogen Phytophthora infestans has been discovered. The Avr3b-Avr10-Avr11 locus is recognized by three different potato resistance genes, and is different from other Avr loci that have been identified thus far. This locus encodes a large protein with a WD40 domain and sequence similarities to transcription factors. Multiple, truncated copies of this gene have arisen by gene amplification and are characteristic of avirulent strains of P. infestans. Here, we describe the new avirulence locus and discuss the importance of this finding.
已发现一个介导马铃薯晚疫病病原菌致病疫霉无毒力的新基因座。Avr3b-Avr10-Avr11基因座可被三个不同的马铃薯抗性基因识别，且与迄今已鉴定的其他Avr基因座不同。该基因座编码一种具有WD40结构域且与转录因子序列相似的大蛋白。该基因的多个截短拷贝通过基因扩增产生，是致病疫霉无毒菌株的特征。在此，我们描述了这个新的无毒力基因座并讨论了这一发现的重要性。
