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. 2016 Jun 8;11(6):e0156930. doi: 10.1371/journal.pone.0156930

Fig 2. Stomatal density correlates with root area.

Fig 2

(A) Histochemical staining of seedlings expressing pEPF1::GUS (top) indicates EPF1 expression in guards cells but not in roots, and pEPF2::GUS (bottom) indicates EPF2 expression in early stomatal lineage cells and not in roots. (B) Representative scans to illustrate root size of plants grown in rhizotrons. (C) Linear regression showing a significant relationship between stomatal density and the rooting area of plants grown in rhizotrons (P = 0.0083). (D) Increased root hair length in plants with increased stomatal density. (E) Increased root hair density in plants with increased stomatal density. (F) Representative micrographs of plants grown in agar to assess root hair length and density. Bars with no letters in common are significantly different, P<0.05, (Tukeys test after one-way ANOVA). Error bars represent SE.