Plant Development: How Long Is a Root?
The plant hormone cytokinin controls root growth by balancing the division and differentiation of stem cells. But what controls accumulation of cytokinin? A new study has identified a regulatory loop between a transcription factor, PHABULOSA, and cytokinin biosynthesis that creates robust domains of cytokinin activity.
Current Biology 22 (21), R919-R921
Read the Full Text at the publishers site