Staples Richard C
Boyce Thompson Institute, Cornell University, Ithaca, NY 14853, USA.
Trends Plant Sci. 2003 Apr;8(4):149-51. doi: 10.1016/S1360-1385(03)00030-X.
The Rpg1 gene, which has provided North American cultivars of barley with resistance to the stem rust fungus Puccinia graminis f.sp. tritici for more than 60 years, has been cloned. A single copy of the gene can confer resistance to a susceptible barley variety. Although unexplained, the progeny are consistently more resistant than the variety from which the gene was obtained. The gene might represent a new class of plant resistance genes.
Rpg1基因已被克隆,在超过60年的时间里,该基因为北美大麦品种提供了对秆锈菌小麦条锈菌的抗性。该基因的单个拷贝就能赋予易感大麦品种抗性。尽管原因不明,但后代的抗性始终高于获得该基因的品种。该基因可能代表了一类新的植物抗性基因。