Electrical signalling and cytokinins mediate effects of light and root cutting on ion uptake in intact plants.

@article{Shabala2009ElectricalSA,
  title={Electrical signalling and cytokinins mediate effects of light and root cutting on ion uptake in intact plants.},
  author={Sergey Shabala and Jiayin Pang and Meixue Zhou and Lana Shabala and Tracey Ann Cuin and Peter Nick and Lars H. Wegner},
  journal={Plant, cell & environment},
  year={2009},
  volume={32 2},
  pages={194-207}
}
Nutrient acquisition in the mature root zone is under systemic control by the shoot and the root tip. In maize, exposure of the shoot to light induces short-term (within 1-2 min) effects on net K+ and H+ transport at the root surface. H+ efflux decreased (from -18 to -12 nmol m(-2) s(-1)) and K+ uptake (approximately 2 nmol m(-2) s(-1)) reverted to efflux (approximately -3 nmol m(-2) s(-1)). Xylem probing revealed that the trans-root (electrical) potential drop between xylem vessels and an… CONTINUE READING

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