Ion-exchange characteristics of the cell walls isolated from the thallus of the lichen Peltigera aphthosa (L.) Willd

Abstract

Ion-exchange characteristics of the cell walls isolated from different zones of the foliose lichen Peltigera aphthosa (L.) Willd were determined. Four types of ionogenic groups were revealed in the thallus cell walls of P. aphthosa, namely amino groups, carboxylic groups of uronic acids, carboxylic groups of phenolic acids, and phenolic OH groups. They may participate in the ion-exchange reactions with the ions of the environment. The amount of ionogenic groups in P. aphthosa cell walls was found to depend on the zone and age of the thallus.