[The role of nitric oxide in ethylene-induced stomatal closure in Vicia faba L].
The effects of nitric oxide (NO) and ethylene on Vicia faba L. stomatal movement were studied. The results showed that NO donor SNP (sodium nitroprusside) 10 micromol/L and ethylene 0.04% could induce stomatal closure distinctly and they could promote stomatal closure when treated together. When treated with AVG (an inhibitor of ethylene synthesis), c-PTIO (a specific scavenger of NO) and NaN(3) (an inhibitor of NR), the effects of NO- and ethylene-induced stomatal closure were inhibited but the inhibitor of nitric oxide synthase (NOS) had little effect. We presumed that there was coordinative effect between NO and ethylene in regulation of stomatal closure; ethylene could induce stomatal closure by regulating the production of nitrate reductase (NR)-dependent NO.
Li
Jie
J
College of Life Sciences, Qingdao Agricultural University, Qingdao 266109, China.
Qiu
Li-Yan
LY
Zhao
Fang-Gui
FG
Hou
Li-Xia
LX
Liu
Xin
X
D005030:Ethylenes / Q000494:pharmacology*; D050901:Nitrate Reductase / Q000378:metabolism; D009569:Nitric Oxide / Q000502:physiology; D020030:Nitric Oxide Donors / Q000494:pharmacology*; D009599:Nitroprusside / Q000494:pharmacology; D010937:Plant Growth Regulators / Q000494:pharmacology; D054046:Plant Stomata / Q000187:drug effects* / Q000502:physiology; D031307:Vicia faba / Q000187:drug effects* / Q000378:metabolism
D005030:Ethylenes; D020030:Nitric Oxide Donors; D010937:Plant Growth Regulators; D009599:Nitroprusside; D009569:Nitric Oxide; C036216:ethylene; D050901:Nitrate Reductase