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Published July 23, 1999 | public
Journal Article

Transcriptional Activation of APETALA1 by LEAFY

Abstract

Plants produce new appendages reiteratively from groups of stem cells called shoot apical meristems. LEAFY (LFY) and APETALA1 (AP1) are pivotal for the switch to the reproductive phase, where instead of leaves the shoot apical meristem produces flowers. Use of steroid-inducible activation of LFY demonstrated that early expression of AP1 is a result of transcriptional induction by LFY. This AP1 induction is independent of protein synthesis and occurs specifically in the tissues and at the developmental stage in which floral fate is assumed. Later expression of AP1 appears to be only indirectly affected by LFY.

Additional Information

© 1999 American Association for the Advancement of Science. Received 16 March 1999; accepted 3 June 1999. We thank J. Fletcher, J. D. Wagner, and D. Weigel for stimulating discussion of the manuscript and C. C. Baker, X. Chen, T. Ito, C. Ohno, and E. Ziegelhoffer for critical review of the manuscript. Supported by the Helen Hay Whitney Foundation (D.W.) and U.S. Department of Energy grant FG03-88ER13873 (E.M.M.).

Additional details

Created:
August 19, 2023
Modified:
October 18, 2023