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Seed dormancy and ABA metabolism in Arabidopsis and barley: the role of ABA 8'-hydroxylase

Millar, Anthony; Jacobsen, J; Ross, John J; Helliwell, Christopher Andrew; Poole, Andrew; Scofield, Graham; Reid, James B; Gubler, Frank


We have investigated the relationship between seed dormancy and abscisic acid (ABA) metabolism in the monocot barley and the dicot Arabidopsis. Whether dormant (D) or non-dormant (ND), dry seed of Arabidopsis and embryos of dry barley grains all had similarly high levels of ABA. ABA levels decreased rapidly upon imbibition, although they fell further in ND than in D. Gene expression profiles were determined in Arabidopsis for key ABA biosynthetic [the 9-cis epoxycarotenoid dioxygenaseq3gene...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: The Plant Journal
DOI: 10.1111/j.1365-313X.2006.02659.x


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