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Chemical response of the lichens Parmotrema austrosinense and P. conferendum transplanted to urban and non-polluted environments

Martha S. Cañas, Liliana Orellana and María L. Pignata
Annales Botanici Fennici
Vol. 34, No. 1 (1997), pp. 27-34
Stable URL: http://www.jstor.org/stable/23726595
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Chemical response of the lichens Parmotrema austrosinense and P. conferendum transplanted to urban and non-polluted environments
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Abstract

Thalli of the lichens Parmotrema austrosinense (Zahlbr.) Hale and P. conferendum Hale were taken from a non-polluted area and transplanted within this area, and to a downtown site in Córdoba, Argentina. Pigments, malondialdehyde, hydroperoxy-conjugated dienes and sulphur were measured after various exposure periods. Changes in the quantified compound concentrations were observed throughout the exposure period in both species and in both sites. In the urban site, however, chlorophyll concentration was lower and, in P. conferendum, malondialdehyde concentration was significatively higher. These results can be attributed to the effect of atmospheric pollutants on the transplanted lichens.

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