Mutation of Protoporphyrinogen IX Oxidase Gene Causes Spotted and Rolled Leaf and Its Overexpression Generates Herbicide Resistance in Rice oleh Xin Liu, Xiao-Jian Deng, Chun-Yan Li, Yong-Kang Xiao, Ke Zhao, Jia Guo, Xiao-Rong Yang, Hong-Shan Zhang, Cong-Ping Chen, Ya-Ting Luo, Yu-Lin Tang, Bin Yang, Chang-Hui Sun, Ping-Rong Wang