Article
The Arabidopsis ABA-deficient mutant aba4 demonstrates that the major route for stress-induced ABA accumulation is via neoxanthin isomers.
The Plant journal : for cell and molecular biology - 1 Jun 2007
North Helen M, De Almeida Aurélie, Boutin Jean-Pierre, Frey Anne, To Alexandra, Botran Lucy, Sotta Bruno, Marion-Poll Annie
Abstract excerpt
A novel abscisic acid (ABA)-deficient mutant, aba4, was identified in a screen for paclobutrazol-resistant germination. Compared with wild-type, the mutant showed reduced endogenous ABA levels in both dehydrated rosettes and seeds. Carotenoid composition analysis demonstrated that the defective locus affects neoxanthin synthesis. The ABA4 gene was identified by map-based cloning, and found to be a unique gene in...
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