Overexpression of JAZ3 represses thermomorphogenesis. A) Seedling phenotypes of Col, jaz3, and the 35S:JAZ3-GFP transgenic lines grown under 22  or 28 °C conditions for 7 d. Scale bars, 2 mm. B) Average hypocotyl length of seedlings shown in (A). Data are presented as boxplots. Each dot represents the datapoint of plant hypocotyl length (n = 20). The central line indicates the mean value. The bounds of the box show the first and third quartiles. Whiskers indicate a 1.5 × interquartile range between the first and third quartiles. Different letters above bars represent significant differences among different seedlings at the P < 0.05 level by 1-way ANOVA test.