Aquaporins: Highly Regulated Channels Controlling Plant Water Relations

摘要: Plant growth and development are dependent on tight regulation of water movement. Water diffusion across cell membranes is facilitated by aquaporins that provide plants with the means to rapidly reversibly modify permeability. This done changing aquaporin density activity in membrane, including posttranslational modifications protein interaction act their trafficking gating. At whole organ level conductance gradients at key “gatekeeper” layers impact plant flow potential. In this way they may concert stomatal determine degree isohydry/anisohydry. Molecular, physiological, biophysical approaches have demonstrated variations root leaf hydraulic conductivity can be accounted for but must integrated anatomical considerations. Update integrates these data emphasizes central role played regulating relations.