壳梭孢素促进蚕豆气孔开放与保卫细胞H_2O_2的关系  

Effect of fusicoccin-induced stomatal opening on hydrogen peroxide in guard cells of Vicia faba

作　　者：张韶杰[1] 韩玺柱[1] 佘小平[1] 

机构地区：[1]陕西师范大学生命科学学院,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2009年第2期78-80,共3页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：陕西省自然科学研究计划基金资助项目(2003C101)

摘　　要：研究了壳梭孢素(FC)诱导蚕豆气孔开放与保卫细胞过氧化氢(H2O2)水平的关系.结果证明,FC、H2O2清除剂抗坏血酸(ASA)和H2O2合成抑制剂二苯基碘(DPI)均能于暗中诱导气孔开放.另外,FC和ASA不仅阻止外源H2O2诱导气孔关闭,而且促进暗诱导已关闭气孔重新开放,但DPI无此效应.将上述结果联系起来考虑,表明FC通过清除降低保卫细胞内源H2O2水平进而促进气孔开放.To investigate the relationship between hydrogen peroxide(H2O2) levels in guard cells and stomatal opening induced by fusicoccin(FC) in Vicia faba.The results indicated that stomatal opening in darkness induced by FC,ascorbic acid(ASA),diphenylene iodonium(DPI),and NADPH oxidase was obvious.Additionally,FC and ASA not only prevented stomatal closure induced by exogenous H2O2 but also promoted the stomatal closed by dark to reopen.Howerer,the similar phenomena were not observed in presence of DPI.Based on th...

关 键 词：壳梭孢素 气孔 保卫细胞 过氧化氢 

分 类 号：Q945[生物学—植物学]