Ozone treatment rapidly activates MAP kinase signalling in plants
Ozone treatment rapidly activates MAP kinase signalling in plants
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DOI：
10.1046/j.1365-313x.2000.00741.x
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发表时间：
2000-05-01
期刊：
影响因子：
7.2
通讯作者：
Ellis, BE
中科院分区：
文献类型：
--
作者：
Samuel, MA;Miles, GP;Ellis, BE
Brief exposure to ozone, a potent cross-inducer of plant stress responses, leads within minutes to activation of an ERK-type MAP kinase (approximately 46 kDa) in tobacco. This activation process is calcium-dependent and can be blocked both by free radical quenchers and by a specific inhibitor of MEK-1 (MAPKK). Hydrogen peroxide and superoxide anion radicals can substitute for ozone as the activation stimulus, which does not appear to require salicylate as an intermediary. The properties of the ozone-induced MAPK suggest that it may be SIPK (salicylate-induced protein kinase), a tobacco MAPK that is activated by a variety of stress treatments. The ability of ozone to activate SIPK indicates that this protein kinase acts as a very early transducer of redox stress signals in plant cells.
