A mutation in the Arabidopsis KT2/KUP2 potassium transporter gene affects shoot cell expansion.

@article{Elumalai2002AMI,
  title={A mutation in the Arabidopsis KT2/KUP2 potassium transporter gene affects shoot cell expansion.},
  author={Rangasamy P. Elumalai and Punita Nagpal and Jason W Reed},
  journal={The Plant cell},
  year={2002},
  volume={14 1},
  pages={119-31}
}
Potassium ions (K(+)) are the most abundant cations in plants and are necessary for cell growth. Arabidopsis shy3-1 mutant plants have a short hypocotyl, small leaves, and a short flowering stem, and these defects result from decreased cell expansion. The semidominant shy3-1 mutation changes an amino acid in KT2/KUP2, a K(+) transporter related to the Escherichia coli Kup protein. Second mutations in the KT2/KUP2/SHY3 gene, including presumed null mutations, suppress the shy3-1 phenotypes… CONTINUE READING