马铃薯晚疫病抗病基因研究进展

Advancement of Late Blight Resistance Genes in Potato

马铃薯晚疫病是马铃薯和番茄等茄科植物中最主要的病害之一,每年都引起巨大的经济损失。基因工程技术的发展为马铃薯晚疫病的防治工作提出了新的契机,从晚疫病抗性品种中筛选出具有高持久抗性的抗病基因,并将其转化到栽培品种中去,无疑是我们开发持久性晚疫病抗性的最快捷的手段。到目前为至,已经有十几个晚疫病抗性基因从S.demissum,S.bulbocastanum,S.berthaultii,S.mochiquense和S.pinnatisectum等抗性马铃薯品种中鉴定出来并已定位在马铃薯染色体基因组上,并有4个被克隆出来(R1,R3a,Rpi-blb1/RB和Rpi-blb2)。主要概述了马铃薯晚疫病抗病基因的研究现状和发展前景。

Light bright is the most destructive disease in potato and tomato worldwide,causing billion-dollar losses every year. The development of genetic engineering contributed much to the prevention and cure of late blight in potato.Isolation of the genes that code for the resistance traits found in wild sources and subsequent transformation of existing potato cuhivars with these genes could be means of exploiting poteneially durable late blight resistartce in wild solarium species. Up to now,more than ten late blight resistance genes have been detected and mapped in potato genome,and four of them have been cloned （R1,R3a,Rpi-blb1/RB and Rpi-blb2）. This paper mainly summarized and described the research state and prospect of late blight resistance genes in potato.