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Ion Channels Meet Auxin Action
Author(s) -
Fuchs I.,
Philippar K.,
Hedrich R.
Publication year - 2006
Publication title -
plant biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 1435-8603
DOI - 10.1055/s-2006-924121
Subject(s) - auxin , biology , cell division , elongation , microbiology and biotechnology , osmolyte , cell growth , biophysics , ion channel , cell , botany , biochemistry , receptor , materials science , ultimate tensile strength , gene , metallurgy
The regulation of cell division and elongation in plants is accomplished by the action of different phytohormones. Auxin as one of these growth regulators is known to stimulate cell elongation growth in the aerial parts of the plant. Here, auxin enhances cell enlargement by increasing the extensibility of the cell wall and by facilitating the uptake of osmolytes such as potassium ions into the cell. Starting in the late 1990s, the auxin regulation of ion channels mediating K + import into the cell has been studied in great detail. In this article we will focus on the molecular mechanisms underlying the modulation of K + transport by auxin and present a model to explain how the regulation of K + channels is involved in auxin‐induced cell elongation growth.