A dsp (disease specific pathogenicity) mutant,AM11,of Xanthomonas oryzae pv oryzicola (Xooc)was obtained following mutagenesis of the wild type Xooc strain RS105 with diethyl sulfate.

• 用硫酸二乙酯 (DES)化学诱变水稻条斑病细菌RS1 0 5菌株 ,获得一株dsp基因突变体AM1 1。