Abstract
The liverwort Lunularia cruciata, known for being a species tolerant to pollution able to colonize urban areas, was collected in the town of Acerra (South Italy) to investigate the biological effects of air pollution in one of the three vertices of the so-called Italian Triangle of Death. The ultrastructural damages observed by transmission electron microscopy in specimens collected in Acerra were compared with samples collected in the city center of Naples and in a small rural site far from sources of air pollution (Riccia, Molise, Southern Italy). The biological response chain to air pollution was investigated considering vitality, photosynthetic efficiency, heat shock protein 70 (Hsp70) induction and gene expression levels, and chlorophyll degradation and related ultrastructural alterations. Particularly, a significant increment in Hsp70 expression and occurrence, and modifications in the chloroplasts’ ultrastructure can be strictly related to the environmental pollution conditions in the three sites. The results could be interpreted in relation to the use of these parameters as biomarkers for environmental pollution.
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Acknowledgements
The authors want to thank Dr. Vivana Maresca (Naples) for the statistical analysis of HM accumulation and vitality data. This work was supported by a grant from MIUR, PROGETTO TIDe, Obiettivo realizzativo: 1.9; Bioaccumulo. The authors declare no conflict of interest.
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Highlights
• Severe alterations were observed in chloroplasts of Lunularia cruciata exposed to pollution.
• A strong increase in the expression and occurrence of heat shock protein 70 was detected.
• The results suggest L. cruciata could be possibly used as a bioindicator organism.
• Hsp70 could be useful biomarkers to measure the effects and the extent of anthropic pollution.
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Basile, A., Loppi, S., Piscopo, M. et al. The biological response chain to pollution: a case study from the “Italian Triangle of Death” assessed with the liverwort Lunularia cruciata . Environ Sci Pollut Res 24, 26185–26193 (2017). https://doi.org/10.1007/s11356-017-9304-y
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DOI: https://doi.org/10.1007/s11356-017-9304-y