FIGURE 1.

Root phenotypes, growth parameters and isoprene emission of non‐emitting (EV) and emitting (B2 and C4) Arabidopsis lines under control and salt‐stressed conditions. Representative root phenotype images (a–c), primary root (PR) length (d), dry weight (e), root/shoot ratio (f) and isoprene emission (g) of EV, B2, and C4 were recorded after exposure to 0 (mock), 50, and 100 mM of NaCl for 5 days (n = 48 plants). The horizontal line within the box corresponds to the median and the box marks the lower and upper quartiles. All data are means ± standard deviations. Green and gray points indicated outlier data. Different letters above the box plots indicate significant differences (p < .05) among the treatments and genotypes, based on two‐way ANOVA and Tukey's test. Scale bar = 1 cm.