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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
Published by: Finnish Zoological and Botanical Publishing Board
Stable URL: http://www.jstor.org/stable/23726595
Page Count: 8
You can always find the topics here!Topics: Lichens, Sulfur, Air pollutants, Transplantation, Thallus, Cell membranes, Chlorophylls, Atmospherics, Air pollution, Carotenoids
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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.
Annales Botanici Fennici © 1997 Finnish Zoological and Botanical Publishing Board