The cortical surfaces in Parmelia saxatilis and P. caperata: a histochemical approach

Histochemical aspects of the amorphous layers in two species of Parmelia a pseudocyphellate 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...

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Bibliographic Details
Published in:The Lichenologist (London) 1986, Vol.18 (4), p.329-338
Main Authors: MODENESI, P, VANZO, C
Format: Article
Language:English
Subjects:
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Lichenes
Parmelia caperata
Parmelia saxatilis
Plant cytology, morphology, systematics, chorology and evolution
Thallophyta
Online Access:Get full text
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Summary:Histochemical aspects of the amorphous layers in two species of Parmelia a pseudocyphellate 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.
ISSN:0024-2829
1096-1135