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The Cortical Surfaces in Parmelia Saxatilis and P.Caperata: A Histochemical Approach

Published online by Cambridge University Press:  28 March 2007

P. Modenesi  and
C. Vanzo
P. Modenesi
Affiliation:
Institute of Botany “Hanbury”, University of Genoa, Corso Dogali 1/C, 1-16136 Genoa, Italy
C. Vanzo
Affiliation:
Institute of Botany “Hanbury”, University of Genoa, Corso Dogali 1/C, 1-16136 Genoa, Italy
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Abstract

Histochemical aspects of the amorphous layers in two species of Parmelia apseudocyphellate and a pored epicorticate, were compared. In P. saxatilis this layer, called the ‘ syncortex ’ (a new term), is composed of strongly acidic (sulphated) polysaccharides containing hyaluronic acid. It is easily distinguishable histochemically from the cortical interhyphal matrix. In P. caperata the mild acidic polysaccharidic composition of the epicortex and the interhyphal matrix is shown. The function of these amorphous layers is discussed on the basis of these results.

Type
Research Article
Information
The Lichenologist , Volume 18 , Issue 4 , October 1986 , pp. 329 - 338
Copyright
Copyright © British Lichen Society 1986

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