1. Department of Plant Pathology and Microbiology, and Institute for Plant Genomics and Biotechnology; Texas A&M University, College Station; Texas 77843 USA
2. College of Agriculture; Nanjing Agricultural University; Nanjing 210095 China
3. College of Agronomy and Biotechnology; China Agricultural University; Beijing 100094 China
4. Department of Biochemistry and Biophysics and Institute for Plant Genomics and Biotechnology; Texas A&M University, College Station; Texas 77843 USA
5. University of Texas at Brownsville; Brownsville Texas USA
6. Texas A&M AgriLife Research and Extension Center; Lubbock Texas 79403 USA