This study aimed at investigating the cellular distribution of Hg in the lichens Cladonia arbuscula subsp. mitis and Peltigera rufescens treated with Hg(2+) and at testing if Hg treatment affects selected physiological parameters. In both species, increasing Hg accumulation under increasing Hg supply in the treatment solutions was found. P. rufescens showed a higher intracellular accumulation. Photosynthetic parameters were negatively affected in both species, as indicated by the decrease in photosynthetic pigments content, photosynthetic efficiency and chlorophyll integrity. Cell membranes of both species endured damage as indicated by the increase in the concentration of products of lipid peroxidation and decrease in ergosterol content. Nevertheless, differences between the two species were found, suggesting a differential sensitivity to Hg. (C) 2010 Elsevier Ltd. All rights reserved.

T., P., S., M., L., P., M., B., J., K., J., P., et al. (2011). Physiological effects of mercury in the lichens Cladonia arbuscula subsp mitis (Sandst.) Ruoss and Peltigera rufescens (Weiss) Humb. CHEMOSPHERE, 82, 1030-1037 [10.1016/j.chemosphere.2010.10.062].

Physiological effects of mercury in the lichens Cladonia arbuscula subsp mitis (Sandst.) Ruoss and Peltigera rufescens (Weiss) Humb.

LOPPI, STEFANO
2011-01-01

Abstract

This study aimed at investigating the cellular distribution of Hg in the lichens Cladonia arbuscula subsp. mitis and Peltigera rufescens treated with Hg(2+) and at testing if Hg treatment affects selected physiological parameters. In both species, increasing Hg accumulation under increasing Hg supply in the treatment solutions was found. P. rufescens showed a higher intracellular accumulation. Photosynthetic parameters were negatively affected in both species, as indicated by the decrease in photosynthetic pigments content, photosynthetic efficiency and chlorophyll integrity. Cell membranes of both species endured damage as indicated by the increase in the concentration of products of lipid peroxidation and decrease in ergosterol content. Nevertheless, differences between the two species were found, suggesting a differential sensitivity to Hg. (C) 2010 Elsevier Ltd. All rights reserved.
2011
T., P., S., M., L., P., M., B., J., K., J., P., et al. (2011). Physiological effects of mercury in the lichens Cladonia arbuscula subsp mitis (Sandst.) Ruoss and Peltigera rufescens (Weiss) Humb. CHEMOSPHERE, 82, 1030-1037 [10.1016/j.chemosphere.2010.10.062].
File in questo prodotto:
File Dimensione Formato  
Physiological effects of Hg.pdf

non disponibili

Tipologia: PDF editoriale
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 1.05 MB
Formato Adobe PDF
1.05 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/20608
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo