The distribution pattern of the medullary depsidone salazinic acid in the thallus of Ramalina siliquosa (lichens)

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Abstract
The quantitative variability of salazinic acid content in ramuli of various weight classes and at various longitudinal parts of the ramulus in Ramalina siliquosa was examined. The salazinic acid content (percentage in dry weight) in the ramuli was higher in the apical part than in the basal part, but there was no difference in the average concentration of salazinic acid among various ramuli with differing weights. The ratio of salazinic acid concentration in the apical part to that in the basal part of the ramulus was nearly the same regardless of the weight or presumably of the developmental stages of the ramuli.

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