Fig. 1
From: Brassinosteroid signaling-dependent root responses to prolonged elevated ambient temperature
Elevated ambient temperature impacts on root elongation. a Phenotype of 15-day-old wild-type plants grown at 21 or 26 °C under long days. Representative pictures are shown. b Primary root length of 15-day-old wild-type plants grown at 21 or 26 °C (mean ± s.d., n = 25). The asterisks indicate a statistically significant difference (t-test, P < 0.0001). c Propidium iodide staining of wild-type plant roots grown as in a. Arrows represent the meristem boundary where cortical cells double their size. Scale bar, 50 µm. d Quantification of meristem size, defined by the distance from the quiescent center to the meristem boundary, in plants grown at 21 or 26 °C (mean ± s.d., n = 25). The asterisks indicate a statistically significant difference (t-test, P < 0.0001). e Quantification of meristem cell number in plants grown at 21 or 26 °C (mean ± s.d., n = 25). The asterisks indicate a statistically significant difference (t-test, P < 0.0001). f Quantification of differentiated root epidermal cell length (mean ± s.d., n = 25). The asterisk indicates a statistically significant difference (t-test, P < 0.01)
