Hydrogen peroxide-induced changes in intracellular pH of guard cells precede stomatal closure

@article{Zhang2001HydrogenPC,
  title={Hydrogen peroxide-induced changes in intracellular pH of guard cells precede stomatal closure},
  author={Xiao Zhang and Fa Cai Dong and Jun Feng Gao and Chun-min Song},
  journal={Cell Research},
  year={2001},
  volume={11},
  pages={37-43}
}
ABSTRACTEpidermal bioassay demonstrated that benzylamine, a membrane-permeable weak base, can mimick hydrogen peroxide (H2O2) to induce stomatal closure, and butyric acid, a membrane-permeable weak acid, can partly abolish the H2O2-induced stomatal closure. Confocal pH mapping with the probe 5-(and-6)-carboxy seminaphthorhodafluor-1-acetoxymethylester (SNARF-1-AM) revealed that H2O2 leads to rapid changes in cytoplasmic and vacuolar pH in guard cells of Vicia faba L, i. e. alkalinization of… CONTINUE READING
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