A novel hydrogen sulfide donor causes stomatal opening and reduces nitric oxide accumulation
A novel hydrogen sulfide donor causes stomatal opening and reduces nitric oxide accumulation
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DOI：
10.1016/j.plaphy.2010.09.016
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发表时间：
2010-12-01
影响因子：
6.5
通讯作者：
Hancock, J. T.
中科院分区：
文献类型：
--
作者：
Lisjak, M.;Srivastava, N.;Hancock, J. T.
硫化氢（H2S）对植物生理的影响以前已经研究过，但这些研究依赖于使用NaSH作为向组织供应H2S的方法。现在已经开发出了新的化合物，其产生不太严重的H2S休克和更长时间的暴露于H2S。在这里，一个这样的化合物，GYY 4137，已被调查，以确定其对拟南芥气孔关闭的影响。结果表明，NOSH和GYY 4137在光照条件下均能促进气孔开放，而在黑暗条件下均能抑制气孔关闭。一氧化氮（NO）已被确立为气孔运动的介质，在这里，它被发现，NaSH和GYY 4137减少了保卫细胞中NO的积累，这可能表明了H2S在该系统中的作用模式。GYY 4137和未来的相关化合物将是揭示植物暴露于H2S的影响和确定H2S如何进入植物细胞信号通路的重要工具。(C)2010年Elsevier Masson SAS。All rights reserved.
Effects of hydrogen sulfide (H2S) on plant physiology have been previously studied, but such studies have relied on the use of NaSH as a method for supplying H2S to tissues. Now new compounds which give a less severe H2S shock and a more prolonged exposure to H2S have been developed. Here the effects of one such compound, GYY4137, has been investigated to determine its effects on stomatal closure in Arabidopsis thaliana. It was found that both NOSH and GYY4137 caused stomatal opening in the light and prevented stomatal closure in the dark. Nitric oxide (NO) has been well established as a mediator of stomatal movements and here it was found that both NaSH and GYY4137 reduced the accumulation of NO in guard cells, perhaps suggesting a mode of action for H2S in this system. GYY4137, and future related compounds, will be important tools to unravel the effects of plant exposure to H2S and to determine how H2S may fit into plant cell signalling pathways. (C) 2010 Elsevier Masson SAS. All rights reserved.