A gymnosperm ABI3 gene functions in a severe abscisic acid-insensitive mutant of Arabidopsis (abi3-6) to restore the wild-type phenotype and demonstrates a strong synergistic effect with sugar in the inhibition of post-germinative growth.

Abstract excerpt

The CnABI3 gene of yellow-cedar is an orthologue of the ABI3/VP1 gene of angiosperms; it shares many common characteristics with other ABI3/VP1 genes, yet has unique characteristics as well. We examined whether this gymnosperm transcription factor can functionally complement an angiosperm species with a defective ABI3 gene. A severe Arabidopsis abi3 null mutant abi3-6 was stably transformed with the CnABI3 gene...

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