Effects of Salt Stress on Three Ecologically Distinct Plantago Species
Fig 4
Osmolyte levels in salt-treated plants.
Leaf contents of (A) proline (Pro), (B) glycine betaine (GB), and (C) total soluble sugars (TSS) in the selected Plantago species, after four weeks of treatment with the indicated NaCl concentrations (means ± SD, n = 5). Different lower case letters within each species indicate significant differences according to Tukey test (α = 0.05).