Plant growth is tightly controlled through the integration of environmental cues with the physiological status of the seedling. A recent study now proposes a model explaining how the plant hormone ethylene triggers opposite growth responses depending on the light environment.

The plant hormone auxin is central to the regulation of growth and development. Recent work has demonstrated that auxin signalling depends on targeted protein degradation, and in the past year this model has been strengthened. The focus is now on identifying the targets of this degradative pathway, determining how auxin influences the degradative process and linking the turnover of specific pro...

Brassinosteroids (BRs) are plant hormones with versatile roles. Among other functions, the BRs control cell elongation, division, and differentiation events (Gudesblat and Russinova, 2011), fulfill roles in adaptive growth processes (Wang et al., 2012; Fridman and Savaldi-Goldstein, 2013), and participate in abiotic and biotic stress responses (Kagale et al., 2007; De Bruyne etal., 2014;Eremina...

[This corrects the article on p. 1366 in vol. 8, PMID: 28824694.].

Patterning in plants requires defining boundary domains that separate and organize the development of the neighboring organs. Two papers now show how the interplay between brassinosteroid phytohormones and frontier genes contributes to boundary formation in plants.