Identification and Genetic Analysis of a Novel Rice Spotted-Leaf Mutant with Broad-Spectrum Resistance to Xanthomonas oryzae pv. oryzae oleh Hai-chao SHEN, Yong-feng SHI, Bao-hua FENG, Hui-mei WANG, Xia XU, Qi-na HUANG, Xiang-guang LÜ, Jian-li WU