Fig. 6.

PBS3 shapes the leaf age- and salt stress-dependent assembly of leaf bacterial communities. (A–E) Canonical analysis of principle coordinates of bacterial β-diversity Bray–Curtis distances based on bacterial 16S rRNA profiling of leaf bacterial communities in WT Col-0, pbs3, and aba2 (A) or Col-0 and pbs3 plants (B–E). Plants were grown in natural Cologne soil treated with water (mock) or 75 mM NaCl (salt) for 6 wk. Constrained analysis was performed for leaf age × treatment effect (A), genotype × leaf age effect under mock (B) or salt stress (C), and genotype × treatment effect in old leaves (OL; D) or young leaves (YL; E).