Hydrogen Sulfide May Function Downstream of Nitric Oxide in Ethylene-Induced Stomatal Closure in Vicia faba L.

查看全文 作　　者：LIU [1]Jing;HOU Zhi-[1]hui;LIU Guo-[1]hua;HOU Li-[1]xia;LIU [1]Xin

机构地区：[1]Key Laboratory of Plant Biotechnology in Universities of Shandong Province/College of Life Science, Qingdao Agricultural University

出　　处：《Journal of Integrative Agriculture》索引2012年第11卷第10期,共10页

基　　金：supported by the National Natural Science Foundation of China (30970288 and 31170237);the National Science Foundation of Shandong Province, China(ZR2010CM024);the Foundation of State Key Laboratory of Plant Physiology and Biochemistry, China(SKLPPBKF11001) 摘　　要：Pharmacological, laser scanning confocal microscopic (LSCM), and spectrophotographic approaches were used to study the roles of hydrogen sulfide (H2S) and nitric oxide (NO) in signaling transduction of stomatal movement in response to ethylene in Vicia faba L. Ethylene treatment resulted in the dose-dependent stomatal closure under light, and this effect was blocked by the inhibitors of H2S biosynthesis in V. faba L. Additionally, ethylene induces H2S generation and increases L-/D-cysteine desulfhydrase (pyridoxalphosphate-dependent enzyme) activity in leaves of V. faba L. Inhibitors of H2S biosynthesis have no effect on the ethylene-induced stomatal closure, NO accumulation, and nitrate reductase (NR) activity in guard cells or leaves of V. faba L. Moreover, the ethylene-induced increase of H2S levels and L-/D- cysteine desulfhydrase activity declined when NO generation was inhibited. Therefore, we conclude that H2S and NO probably are involved in the signal transduction pathway of ethylene-induced stomatal closure. H2S may represent a novel component downstream of NO in the ethylene-induced stomatal movement in V. faba L. 关键词：乙烯处理气孔关闭一氧化氮硫化氢诱导蚕豆激光扫描共聚焦显微镜信号转导通路

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Hydrogen Sulfide May Function Downstream of Nitric Oxide in Ethylene-Induced Stomatal Closure in Vicia faba L.

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