Inhibition by acrolein of light-induced stomatal opening through inhibition of inward-rectifying potassium channels in Arabidopsis thaliana
Inhibition by acrolein of light-induced stomatal opening through inhibition of inward-rectifying potassium channels in Arabidopsis thaliana
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DOI：
10.1080/09168451.2014.951028
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发表时间：
2015-01
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影响因子：
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通讯作者：
Md. Moshiul Islam;W. Ye;Daiki Matsushima;M. A. R. Khokon;S. Munemasa;Yoshimasa Nakamura;Y. Murata
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文献类型：
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作者：
Md. Moshiul Islam;W. Ye;Daiki Matsushima;M. A. R. Khokon;S. Munemasa;Yoshimasa Nakamura;Y. Murata
丙烯醛是一种反应性的α，β-不饱和醛，由植物在各种胁迫下产生的脂质过氧化物衍生而来。以拟南芥为材料，研究了丙烯醛对光诱导气孔开放的影响。丙烯醛抑制光诱导的气孔开放呈剂量依赖性。100 μM丙烯醛抑制保卫细胞质膜内向整流钾（Kin）通道。100 μM丙烯醛抑制在使用爪蟾叶卵母细胞的异源系统中表达的Kin通道KAT 1。这些结果表明，丙烯醛抑制光诱导的气孔开放通过抑制Kin通道在保卫细胞。丙烯醛是一种活性α，β-不饱和醛，通过抑制KAT 1抑制Kin通道电流，从而抑制光诱导的气孔开放。
Acrolein is a reactive α,β-unsaturated aldehyde derived from lipid peroxides, which are produced in plants under a variety of stress. We investigated effects of acrolein on light-induced stomatal opening using Arabidopsis thaliana. Acrolein inhibited light-induced stomatal opening in a dose-dependent manner. Acrolein at 100 μM inhibited plasma membrane inward-rectifying potassium (Kin) channels in guard cells. Acrolein at 100 μM inhibited Kin channel KAT1 expressed in a heterologous system using Xenopus leaves oocytes. These results suggest that acrolein inhibits light-induced stomatal opening through inhibition of Kin channels in guard cells. Graphical Abstract A reactive α,β-unsaturated aldehyde, acrolein, inhibits Kin channel currents through inhibition of KAT1, resulting in inhibition of light-induced stomatal opening.