Transcriptional activation of APETALA1 by LEAFY.
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.
California Institute of Technology, Division of Biology 156-29, Pasadena, CA 91125, USA.
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Wagner
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Sablowski
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EM
Meyerowitz
D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development / Q000378:metabolism; D029681:Arabidopsis Proteins; D002467:Cell Nucleus / Q000378:metabolism; D003907:Dexamethasone / Q000494:pharmacology; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D018398:Homeodomain Proteins / Q000235:genetics* / Q000378:metabolism; D017404:In Situ Hybridization, Fluorescence; D026161:MADS Domain Proteins; D018519:Meristem / Q000235:genetics / Q000378:metabolism; D009154:Mutation; D010940:Plant Proteins / Q000096:biosynthesis / Q000235:genetics* / Q000378:metabolism*; D018514:Plant Structures / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D011401:Promoter Regions, Genetic; D018749:RNA, Plant / Q000235:genetics / Q000378:metabolism; D011993:Recombinant Fusion Proteins / Q000378:metabolism; D015534:Trans-Activators / Q000235:genetics / Q000378:metabolism*; D014157:Transcription Factors; D015533:Transcriptional Activation; D014170:Transformation, Genetic
C091535:AP1 protein, Arabidopsis; D029681:Arabidopsis Proteins; D018398:Homeodomain Proteins; C074747:LFY protein, Arabidopsis; D026161:MADS Domain Proteins; D010940:Plant Proteins; D018749:RNA, Plant; D011993:Recombinant Fusion Proteins; D015534:Trans-Activators; D014157:Transcription Factors; D003907:Dexamethasone