SO-2 induces stomatal closure in sweetpotato and acts upstream of H-2S and NO signaling pathways
In this work,we demonstrated that Na-2SO-3/NaHSO-3 (3 : 1),sulfur dioxide (SO-2) donor solutions induced the stomatal closure in Sweetpotato (Ipomoea batatas) mediated by nitric oxide (NO) signaling transduction. Application with the SO-2 donor to seedling leaves of sweetpotato could promote the stomatal closure in a dose-dependent manner. Rapid increment of endogenous H-2S and NO levels were observed in sweetpotato seedling after application with the exogenous SO-2 donor. Combined with exogenous H-2S donor,NO donor sodium nitroprusside (SNP) and NO scavenger 2-(4carboxyphenyl)-4, 4,5,5-tetramethylimidazoline-1oxyl-3-oxide (cPTIO),further investigations showed that H-2S and NO induced stomatal closure significantly;while the SO-2 and H-2S mediated effects were alleviated by cPTIO. These results indicted that SO-2 induced stomatal closure probably mediated by the H-2S and NO pathway and acted upstream of H-2S and NO signaling.
hydrogen sulfide nitric oxide sweetpotato (Ipomoea batatas) stomatal closure sulfur dioxide
Hua Zhang Zhihua Qiu Lanying Hu Songhua Wang Russell Jones
School of Biotechnology and Food Engineering,Hefei University of Technology,Hefei 230009,China Depar School of Biotechnology and Food Engineering,Hefei University of Technology,Hefei 230009,China Life Science College,Anhui Science and Technology University,Bengbu 233100,China Department of Plant and Microbial Biology,University of California,Berkeley,CA 94720,USA
国际会议
徐州
英文
312-319
2010-11-27（万方平台首次上网日期，不代表论文的发表时间）