The Xa7 Resistance Gene Guards the Susceptibility Gene SWEET14 of Rice Against Exploitation by Bacterial Blight Pathogen

TAL effectors of bacteria hijack host gene expression to condition disease susceptibility, while host plants counteract TAL effectors with resistance genes to thwart pathogen infections. Here we report the cloning of Xa7, TAL effector-specific expression by the essential virulence TAL effectors AvrXa7 and PthXo3, and the prevalence of Xa7 in indica rice cultivars.

细菌的TAL效应蛋白（TAL effector）可通过劫持宿主基因表达来诱导宿主产生病害感病性，宿主植物则借助抗病基因拮抗TAL效应蛋白，以此阻断病原菌的侵染过程。本研究报道了Xa7基因的克隆、核心致病力TAL效应蛋白AvrXa7与PthXo3所介导的TAL效应蛋白特异性表达，以及Xa7在籼稻栽培品种中的分布状况。