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. 2012;76(3):617-9.
doi: 10.1271/bbb.110885.

Inhibitory effects of methylglyoxal on light-induced stomatal opening and inward K+ channel activity in Arabidopsis

Tahsina Sharmin Hoque  1 , Eiji Okuma, Misugi Uraji, Takuya Furuichi, Takayuki Sasaki, Md Anamul Hoque, Yoshimasa Nakamura, Yoshiyuki Murata
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Free article

Inhibitory effects of methylglyoxal on light-induced stomatal opening and inward K+ channel activity in Arabidopsis

Tahsina Sharmin Hoque et al. Biosci Biotechnol Biochem. 2012.
Free article

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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