Classification of barley U-box E3 ligases and their expression patterns in response to drought and pathogen stresses oleh Moon Young Ryu, Seok Keun Cho, Yourae Hong, Jinho Kim, Jong Hum Kim, Gu Min Kim, Yan-Jun Chen, Eva Knoch, Birger Lindberg Møller, Woo Taek Kim, Michael Foged Lyngkjær, Seong Wook Yang