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  • Title: How does auxin enhance cell elongation? Roles of auxin-binding proteins and potassium channels in growth control.
    Author: Christian M, Steffens B, Schenck D, Burmester S, Böttger M, Lüthen H.
    Journal: Plant Biol (Stuttg); 2006 May; 8(3):346-52. PubMed ID: 16807827.
    Abstract:
    Elongation growth and a several other phenomena in plant development are controlled by the plant hormone auxin. A number of recent discoveries shed light on one of the classical problems of plant physiology: the perception of the auxin signal. Two types of auxin receptors are currently known: the AFB/TIR family of F box proteins and ABP1. ABP1 appears to control membrane transport processes (H+ secretion, osmotic adjustment) while the TIR/AFBs have a role in auxin-induced gene expression. Models are proposed to explain how membrane transport (e.g., K+ and H+ fluxes) can act as a cross-linker for the control of more complex auxin responses such as the classical stimulation of cell elongation.
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