Long-distance transport of gases in plants: a perspective on internal aeration and radial oxygen loss from roots

  title={Long-distance transport of gases in plants: a perspective on internal aeration and radial oxygen loss from roots},
  author={Timothy David Colmer},
  journal={Plant Cell and Environment},
  • T. Colmer
  • Published 2003
  • Environmental Science
  • Plant Cell and Environment
Internal transport of gases is crucial for vascular plants inhabiting aquatic, wetland or flood-prone environments. Diffusivity of gases in water is approximately 10 000 times slower than in air; thus direct exchange of gases between submerged tissues and the environment is strongly impeded. Aerenchyma provides a low-resistance internal pathway for gas transport between shoot and root extremities. By this pathway, O2 is supplied to the roots and rhizosphere, while CO2, ethylene, and methane… 

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