Pollen tube development and competitive ability are impaired by disruption of a Shaker K(+) channel in Arabidopsis.

@article{Mouline2002PollenTD,
  title={Pollen tube development and competitive ability are impaired by disruption of a Shaker K(+) channel in Arabidopsis.},
  author={Karine Mouline and A. -A. V{\'e}ry and Fr{\'e}d{\'e}ric Gaymard and Jossia Boucherez and Guillaume Pilot and Martine Devic and David Bouchez and J. Thibaud and Herv{\'e} Sentenac},
  journal={Genes & development},
  year={2002},
  volume={16 3},
  pages={
          339-50
        }
}
Sexual reproduction in plants requires elongation of the pollen tube through the transmitting tissues toward the ovary. Tube growth rate is a major determinant of pollen competitive ability. We report that a K(+) channel of the Shaker family in Arabidopsis, SPIK, plays an important role in pollen tube development. SPIK was found to be specifically expressed in pollen. When SPIK was heterologously expressed in COS cells, its product formed hyperpolarization-activated K(+) channels. Disruption (T… CONTINUE READING

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