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 interchangeable 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.


Floral arrest: the end of flowering

Carpic dominance: the end of fruiting

Interchangeable dominance: the end of growth

Integration of post-floral processes in annuals and perennials

People working on this project:

Catriona Walker


  • Walker C, Bennett T (2018). Forbidden fruit: dominance relationships and the control of shoot architecture. Annual Plant Reviews Online, in press
  • Lenser et al (2018). Plant Journal, in press