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Regulation of gibberellin biosynthesis by light
Y Kamiya1, J L García-Martínez
1Frontier Research Program, The Institute of Physical and Chemical Research, Wako-shi, Saitama, 351-0198, Japan. ykamiya@postman.riken.go.jp
Current Opinion in Plant Biology
|October 6, 1999
Abstract:
Phytochromes regulate transcript levels of gibberellin biosynthesis enzymes, GA 20-oxidases and/or GA 3beta-hydroxylases, in germinating lettuce and Arabidopsis seeds and in de-etiolating pea seedlings. Feedback regulation of GA biosynthesis by active GA is well established, but other mechanisms for regulation of these biosynthetic genes also exist, as this feedback does not operate on a GA 3beta-hydroxylase gene of Arabidopsis during seed germination.