Ubiquitin-mediated proteolysis in plant hormone signal transduction

Being sessile organisms, plants usually have little control over their
immediate growth environment. Responses to environmental and developmental
factors need to be rapid and finely coordinated to trigger the necessary
morphological and metabolic changes that ensure plant survival and growth.
Many of these adaptive responses are mediated by plant hormones. Recent
work has shown that ubiquitin-mediated proteolysis plays an important
regulatory role in hormone signaling.