1999/07/23 by Doris Wagner, Robert Sablowski, Elliot M. Meyerowitz · 2 citations
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Plant Molecular Biology Research #Plant Reproductive Biology #Plant tissue culture and regeneration
paper · doi:10.1126/science.285.5427.582
openalex publication_date 1999/07/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23
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.