Arabidopsis sphingosine kinase and the effects of phytosphingosine-1-phosphate on stomatal aperture.

@article{Coursol2005ArabidopsisSK,
  title={Arabidopsis sphingosine kinase and the effects of phytosphingosine-1-phosphate on stomatal aperture.},
  author={Sylvie Coursol and Herv{\'e} Le Stunff and Daniel V. Lynch and Simon Gilroy and Sarah M. Assmann and Sarah Spiegel},
  journal={Plant physiology},
  year={2005},
  volume={137 2},
  pages={724-37}
}
Sphingolipids are a major component of membrane lipids and their metabolite sphingosine-1-phosphate (S1P) is a potent lipid mediator in animal cells. Recently, we have shown that the enzyme responsible for S1P production, sphingosine kinase (SphK), is stimulated by the phytohormone abscisic acid in guard cells of Arabidopsis (Arabidopsis thaliana) and that S1P is effective in regulating guard cell turgor. We have now characterized SphK from Arabidopsis leaves. SphK activity was mainly… CONTINUE READING