Resolving phytohormone response zones by fluorescent reporters
Plant Science Research WeeklyPhytohormones such salicylic acid (SA), ethylene (ET), and jasmonic acid (JA) are known to regulate plant immunity, but their spatial dynamics has remained unclear. Using a set of fluorescent reporters in Arabidopsis, Calabria et al. resolved the hormonal responses upon Fusarium oxysporum infection at…
Alone or together: BRI1 signaling controls root growth in a cell-autonomous manner
Plant Science Research WeeklyRoot growth is controlled by a dense network of hormone signals working in shared and distinct root zones and cell types. Brassinosteroids (BR) control root growth through activated signaling in vascular and epidermal tissues, but it is unclear how BR signals in each tissue contribute and whether there…