Article
Mutations in the SLAC1 anion channel slow stomatal opening and severely reduce K+ uptake channel activity via enhanced cytosolic [Ca2+] and increased Ca2+ sensitivity of K+ uptake channels.
The New phytologist - 1 Jan 2013
Laanemets Kristiina, Wang Yong-Fei, Lindgren Ove, Wu Juyou, Nishimura Noriyuki, Lee Stephen, Caddell Daniel, Merilo Ebe, Brosche Mikael, Kilk Kalle, Soomets Ursel, Kangasjärvi Jaakko, Schroeder Julian I, Kollist Hannes
Abstract excerpt
The Arabidopsis guard cell anion channel SLAC1 is essential for stomatal closure in response to various endogenous and environmental stimuli. Interestingly, here we reveal an unexpected impairment of slac1 alleles on stomatal opening. We report that mutations in SLAC1 unexpectedly slow stomatal opening induced by light, low CO(2) and elevated air humidity in intact plants and that this is caused by the severely...
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