A cell surface receptor mediates extracellular Ca2+ sensing in guard cells

@article{Han2003ACS,
  title={A cell surface receptor mediates extracellular Ca2+ sensing in guard cells},
  author={Shengcheng Han and Ruhang Tang and Lisa K. Anderson and Todd E. Woerner and Zhen-Ming Pei},
  journal={Nature},
  year={2003},
  volume={425},
  pages={196-200}
}
Extracellular Ca2+ (Ca2+o) is required for various physiological and developmental processes in animals and plants. In response to varied Ca2+o levels, plants maintain relatively constant internal Ca2+ content, suggesting a precise regulatory mechanism for Ca2+ homeostasis. However, little is known about how plants monitor Ca2+o status and whether Ca2+o-sensing receptors exist. The effects of Ca2+o on guard cells in promoting stomatal closure by inducing increases in the concentration of… CONTINUE READING

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