Extracellular Spermine Triggers a Rapid Intracellular Phosphatidic Acid Response in Arabidopsis, Involving PLDδ Activation and Stimulating Ion Flux

@inproceedings{Zarza2019ExtracellularST,
  title={Extracellular Spermine Triggers a Rapid Intracellular Phosphatidic Acid Response in Arabidopsis, Involving PLDδ Activation and Stimulating Ion Flux},
  author={Xavier Zarza and Lana Shabala and Miki Fujita and Sergey Shabala and Michel A Haring and Antonio Fern{\'a}ndez Tiburcio and Teun Munnik},
  booktitle={Front. Plant Sci.},
  year={2019}
}
Polyamines, such as putrescine (Put), spermidine (Spd), and spermine (Spm), are low-molecular-weight polycationic molecules found in all living organisms. Despite the fact that they have been implicated in various important developmental and adaptative processes, their mode of action is still largely unclear. Here, we report that Put, Spd, and Spm trigger a rapid increase in the signaling lipid, phosphatidic acid (PA) in Arabidopsis seedlings but also mature leaves. Using time-course and dose… CONTINUE READING

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