1. Department of Plant Pathology and Microbiology; Texas A&M University; College Station TX 77843 USA
2. Institute for Plant Genomics and Biotechnology; Texas A&M University; College Station TX 77843 USA
3. The Provincial Key Laboratory of Plant Pathology of Hubei Province; College of Plant Science and Technology; Huazhong Agricultural University; Wuhan Hubei 430070 China
4. Center for Agricultural Resources Research; Institute of Genetics and Developmental Biology; Chinese Academy of Sciences; Shijiazhuang Hebei 050021 China