Pollen tube growth regulation by free anions depends on the interaction between the anion channel SLAH3 and calcium-dependent protein kinases CPK2 and CPK20.

@article{Gutermuth2013PollenTG,
  title={Pollen tube growth regulation by free anions depends on the interaction between the anion channel SLAH3 and calcium-dependent protein kinases CPK2 and CPK20.},
  author={Timo Gutermuth and Roman van Lassig and Jo{\~a}o Rodrigo Maciel Portes and Tobias Maierhofer and Tina Romeis and Joseph P. Borst and Rainer Hedrich and Jos{\'e} A Feij{\'o} and Kai Robert Konrad},
  journal={The Plant cell},
  year={2013},
  volume={25 11},
  pages={
          4525-43
        }
}
Apical growth in pollen tubes (PTs) is associated with the presence of tip-focused ion gradients and fluxes, implying polar localization or regulation of the underlying transporters. The molecular identity and regulation of anion transporters in PTs is unknown. Here we report a negative gradient of cytosolic anion concentration focused on the tip, in negative correlation with the cytosolic Ca(2+) concentration. We hypothesized that a possible link between these two ions is based on the presence… CONTINUE READING

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