作者单位:USDA ARS, Plant Protect Res Unit, Ithaca, NY 14853 USA[1]Cornell Univ, Ctr Theory, Computat Biol Serv Unit, Ithaca, NY 14853 USA[2]Cornell Univ, Dept Plant Pathol, Ithaca, NY 14853 USA[3]Institute of Phytochemistry, Academy of Sciences of the Republic of Kazakhstan, Karaganda[4]