Article
Stomatal action directly feeds back on leaf turgor: new insights into the regulation of the plant water status from non-invasive pressure probe measurements.
The Plant journal : for cell and molecular biology - 1 Jun 2010
Ache Peter, Bauer Hubert, Kollist Hannes, Al-Rasheid Khaled A S, Lautner Silke, Hartung Wolfram, Hedrich Rainer
Abstract excerpt
Uptake of CO(2) by the leaf is associated with loss of water. Control of stomatal aperture by volume changes of guard cell pairs optimizes the efficiency of water use. Under water stress, the protein kinase OPEN STOMATA 1 (OST1) activates the guard-cell anion release channel SLOW ANION CHANNEL-ASSOCIATED 1 (SLAC1), and thereby triggers stomatal closure. Plants with mutated OST1 and SLAC1 are defective in...
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