Inhibitory effects of methylglyoxal on light-induced stomatal opening and inward K+ channel activity in Arabidopsis |
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| Authors: | Hoque Tahsina Sharmin Okuma Eiji Uraji Misugi Furuichi Takuya Sasaki Takayuki Hoque Md Anamul Nakamura Yoshimasa Murata Yoshiyuki |
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| Institution: | Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan. |
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| Abstract: | Methylglyoxal (MG) is a reactive aldehyde derived by glycolysis. In Arabidopsis, MG inhibited light-induced stomatal opening in a dose-dependent manner. It significantly inhibited both inward-rectifying potassium (K(in)) channels in guard-cell protoplasts and an Arabidopsis K(in) channel, KAT1, heterologously expressed in Xenopus oocytes. Thus it appears that MG inhibition of stomatal opening involves MG inhibition of K(+) influx into guard cells. |
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