Col-0 plant 3 1
An Arabidopsis plant that has undergone floral arrest

While we know a huge amount regarding how plants initiate flowering, we know almost nothing about the mechanisms that bring about the end of flowering. This project extends our previous work on the hormonal regulation of shoot architecture to look at the events which occur after flowering in both annual and perennial plants. How do plants know when to stop flowering, when to stop producing fruit and when to stop growing? We believe that three interacting ‘post-floral processes’ regulate the end of flowering, fruiting and growth. These processes — floral arrest, carpic dominance and exchangeable dominance — are very poorly characterised, and we aim to define their roles in post-floral development, and the molecular mechanisms by which they act. We hypothesise that differently wired interactions between these processes may result in the varied life-history strategies found between flowering species, and aim to test this idea.


Apical dominance and the 50% rule

Exchangeable dominance

Carpic dominance

People working on this project:

Catriona Walker