title: Inhibitory effects of methylglyoxal on light-induced stomatal opening and inward K+ channel activity in Arabidopsis.
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.
authors.affiliation: Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan.
authors.forename: Tahsina Sharmin
authors.initials: TS
authors.lastname: Hoque
authors.forename: Eiji
authors.initials: E
authors.lastname: Okuma
authors.forename: Misugi
authors.initials: M
authors.lastname: Uraji
authors.forename: Takuya
authors.initials: T
authors.lastname: Furuichi
authors.forename: Takayuki
authors.initials: T
authors.lastname: Sasaki
authors.forename: Md Anamul
authors.initials: MA
authors.lastname: Hoque
authors.forename: Yoshimasa
authors.initials: Y
authors.lastname: Nakamura
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Murata
mesh_terms: D000818:Animals; D017360:Arabidopsis / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism / Q000528:radiation effects*; D029681:Arabidopsis Proteins / Q000037:antagonists & inhibitors* / Q000235:genetics; D008027:Light; D009865:Oocytes / Q000378:metabolism; D054046:Plant Stomata / Q000033:anatomy & histology / Q000187:drug effects* / Q000528:radiation effects*; D026902:Potassium Channel Blockers / Q000494:pharmacology; D024661:Potassium Channels, Inwardly Rectifying / Q000037:antagonists & inhibitors* / Q000235:genetics; D011523:Protoplasts / Q000187:drug effects / Q000378:metabolism / Q000528:radiation effects; D011765:Pyruvaldehyde / Q000494:pharmacology*; D014982:Xenopus laevis / Q000235:genetics
chemical_list: D029681:Arabidopsis Proteins; C501210:KAT1 protein, Arabidopsis; D026902:Potassium Channel Blockers; D024661:Potassium Channels, Inwardly Rectifying; D011765:Pyruvaldehyde