Endophyte effects on root system architecture.
Boxplots illustrating root system architecture variability in E-treated and control (C) Arabidopsis plants, 14 DAI. (a) number of first order lateral root; (b) total length of lateral root; (c) primary root length and (d) primary root branching. The reference hatched line represents the median of controls. Differences were considered significant at a probability level of *: p<0.05; **: <0.01; and ***: <0.001.