Abstract
Background : Sphingosine kinase (SPHK) and phospholipaseD(PLD) produce different lipid mediators involved in abscisic acid (ABA) response.
Results: Ablation of SPHKs and PLD α1 attenuates ABA-induced production of LCBPs and PA. Phyto-S1P closes stomata in sphk 1 , sphk 2, but not in pld α1 , whereas PA closes stomata in all mutants.
Conclusion : SPHK acts upstream of PLDα1, whereas PLDα1 promotes SPHK.
Significance : The roles of lipid messengers in the ABA signaling pathway are clarified.
Original language | American English |
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Journal | Default journal |
Volume | 287 |
DOIs | |
State | Published - Mar 9 2012 |
Disciplines
- Biochemistry
- Biochemistry, Biophysics, and Structural Biology
- Biotechnology
- Life Sciences
- Other Biochemistry, Biophysics, and Structural Biology
- Plant Biology
- Biology