Diurnal and light-regulated expression of AtSTP1 in guard cells of Arabidopsis.

@article{Stadler2003DiurnalAL,
  title={Diurnal and light-regulated expression of AtSTP1 in guard cells of Arabidopsis.},
  author={Ruth Stadler and Michael B{\"u}ttner and Peter Ache and Rainer Hedrich and Natalya Ivashikina and Michael Karl Melzer and Sarah M Shearson and Steven M Smith and Norbert Sauer},
  journal={Plant physiology},
  year={2003},
  volume={133 2},
  pages={528-37}
}
Guard cell chloroplasts are unable to perform significant photosynthetic CO2 fixation via Rubisco. Therefore, guard cells depend on carbon supply from adjacent cells even during the light period. Due to their reversible turgor changes, this import cannot be mediated by plasmodesmata. Nevertheless, guard cells of several plants were shown to use extracellular sugars or to accumulate sucrose as an osmoticum that drives water influx to increase stomatal aperture. This paper describes the first… CONTINUE READING

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