Inositol hexakisphosphate is a physiological signal regulating the K+-inward rectifying conductance in guard cells.

@article{LemtiriChlieh2000InositolHI,
  title={Inositol hexakisphosphate is a physiological signal regulating the K+-inward rectifying conductance in guard cells.},
  author={Fouad Lemtiri-Chlieh and E A C Macrobbie and Charles A Brearley},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2000},
  volume={97 15},
  pages={8687-92}
}
(RS)-2-cis, 4-trans-abscisic acid (ABA), a naturally occurring plant stress hormone, elicited rapid agonist-specific changes in myo-inositol hexakisphosphate (InsP(6)) measured in intact guard cells of Solanum tuberosum (n = 5); these changes were not reproduced by (RS)-2-trans, 4-trans-abscisic acid, an inactive stereoisomer of ABA (n = 4). The electrophysiological effects of InsP(6) were assessed on both S. tuberosum (n = 14) and Vicia faba (n = 6) guard cell protoplasts. In both species… CONTINUE READING

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