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Oxidative Stress and Ascorbic Acid Contents in Parmotrema Reticulatum and Parmelia Sulcata Thalli

Published online by Cambridge University Press:  28 March 2007

A. M. Caviglia  and
P. Modenesi
A. M. Caviglia
Affiliation:
Istituto Botanico ‘Hanbury’, University of Genoa, Corso Dogali 1/c, I-16136 Genova, Italy.
P. Modenesi
Affiliation:
Istituto Botanico ‘Hanbury’, University of Genoa, Corso Dogali 1/c, I-16136 Genova, Italy.
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Abstract

Paraquat-treatment of Parmotrema reticulatum and high light levels in the habitat of Pamtelia sulcata can cause oxidative stress, which promotes an increase in ascorbic acid contents of thalli. Ascorbic acid was measured by an HPLC method. In P. reticulatum the increase was more pronounced in summer than in other seasons. In P. sulcata, thalli growing in sun-exposed habitats showed a higher ascorbic acid content than shade-growingspecimens.

Type
Research Article
Information
The Lichenologist , Volume 31 , Issue 1 , January 1999 , pp. 105 - 110
Copyright
Copyright © British Lichen Society 1999

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