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The Effect of Desiccation on Pyrenoid Structure in the Oceanic Lichen Parmelia Laevigata

Published online by Cambridge University Press:  28 March 2007

C. Ascaso ,
D. H. Brown  and
S. Rapsch
C. Ascaso
Affiliation:
Instituto de Edafologia y Biologia Vegetal, C.S.I.C., Serrano 115 bis, Madrid 28006, Spain.
D. H. Brown
Affiliation:
Department of Botany, The University, Bristol BS8 1UG, UK.
S. Rapsch
Affiliation:
Instituto de Edafologia y Biologia Vegetal, C.S.I.C., Serrano 115 bis, Madrid 28006, Spain.
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Abstract

Phycobiont cells of Parmelia laevigata contain chloroplasts with pyrenoids penetrated by a reticulum of tubules. The occurrence and significance of such tubules in algae is discussed. Although these tubules collapsed in desiccated cells, their lumen reappeared on rehydration. However, in such desiccated cells, pyrenoglobuli did not become peripherally located within the pyrenoid, except when damage occurred to the pyrenoid matrix. Rehydration of desiccated cells reduced the number of pyrenoglobuli per pyrenoid.

Type
Research Article
Information
The Lichenologist , Volume 20 , Issue 1 , January 1988 , pp. 31 - 39
Copyright
Copyright © British Lichen Society 1988

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