This preview shows page 1. Sign up to view the full content.
Unformatted text preview: FT is synthesized in phloem companion cells, moves into sieve tubes and travels to the apical meristem to initiate transition to a flowering shoot. FT expressed in high concentration in apical meristems can induce flowering even when conditions are not favorable. • Constans (CO) codes for the transcription factor than activates the synthesis of Flowering Locus T. CO functions in the leaf. Over expression of CO in apical meristems has no effect. CO requires an appropriate photoperiod regimen to remain stable long enough to activate FT synthesis. • Flowering Locus D (FD) codes for a protein,Apetala 1, that binds to FT in the apical meristem. The FD and FT complex activate transcription factors for meristem flower part genes (discussed in pattern identity genes in Biology 211 and in our discussion of flowering plant reproduction and development.)...
View Full Document
This note was uploaded on 01/08/2012 for the course BIO 213 taught by Professor Makina during the Fall '09 term at SUNY Stony Brook.
- Fall '09