Interactions of lichens with heavy metals

Bačkor, Martin; Loppi, Stefano

doi:10.1007/s10535-009-0042-y

Cited by 200 publications

(133 citation statements)

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“…Caperatic acid is an aliphatic acid which is not detectable by the HPLC method used in this study. Lichen metabolites play an important role in tolerance of lichens to metal pollution (Bačkor and Loppi 2009). Some reports say that compounds located in the medulla (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…Ever since the industrial revolution in the 1800s lichens have been recognized as bioindicators of air quality and, nowadays, they are commonly used to indicate the presence of air pollutants. More recently, lichens have also been used as biomonitors, in experiments measuring the lichen physiological responses to atmospheric pollution over time and providing additional information about the amount and intensity of the exposure (Garty et al 2003, Bačkor and Loppi 2009, Paoli et al 2015a. So far, they have been used as biomonitors of atmospheric pollution from different sources (Loppi et al 2004, Branquino et al 2008, Lackovičová et al 2013, Paoli et al 2015b).…”

Section: Introductionmentioning

confidence: 99%

“…They might also have important role in metal homeostasis and lichen tolerance to pollution, although the biochemical mechanisms are mostly unknown (Molnár and Farkas 2010). Nevertheless, it is known that lichen substances function in vitro as chelators of cations, including heavy metals (Bačkor and Loppi 2009). Few studies have compared metal pollution and secondary compound concentration, and showed different responses.…”

Section: Introductionmentioning

confidence: 99%

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The Impact of Cadmium on Photosynthetic Performance and Secondary Metabolites in the Lichens Parmelia sulcata, Flavoparmelia caperata and Evernia prunastri

Maslać¹,

Maslać²,

Tkalec³

2016

Acta Botanica Croatica

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-Lichens are one of the most common air quality bioindicators. Airborne heavy metal pollution causes various physiological changes in lichens, but sensitivity to metal pollution is species specifi c. In this research, three lichen species (Parmelia sulcata, Flavoparmelia caperata and Evernia prunastri) were exposed to cadmium (50 mg L -1 ) in laboratory conditions. Photosynthetic effi ciency of photosystem II and content of secondary metabolites were determined after one, three and eight days of exposure. In all investigated species treatment of lichen thalli with cadmium signifi cantly changed F v /F m and R Fd only after eight days of exposure. Quantifi cation of metabolites showed a decreased content of the medullary depsidones salazinic acid (in P. sulcata) and protocetraric acid (in F. caperata) but increased content of cortical depside atranorin (in P. sulcata) and dibenzofurane usnic acid (in F. caperata) after cadmium exposure. However, no changes in secondary metabolites were found in E. prunastri. Results show that investigated species are relatively resistant to short-term cadmium-exposure and that secondary metabolites could have an important role in the protection of primary metabolism from negative cadmium impacts, at least in some species.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Impact of Cadmium on Photosynthetic Performance and Secondary Metabolites in the Lichens Parmelia sulcata, Flavoparmelia caperata and Evernia prunastri

Maslać¹,

Maslać²,

Tkalec³

2016

Acta Botanica Croatica

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“…However, this assumption has been questioned in some works [10][11][12][13]. The sources of heavy metals, the mechanisms of heavy metal accumulation and detoxification by lichens, and lichen's bioaccumulation capacity have been discussed in a number of works [14][15][16][17][18][19][20]. The biochemical composition, physiological processes, anatomical and morphological characteristics, population structure, species composition, and structure of lichen communities change under the influence of pollutants.…”

Section: Introductionmentioning

confidence: 99%

Air Pollution Monitoring in the south-east baltic using the epiphytic lichen <em>h</em><em>ypogymnia physodes</em>

Koroleva¹,

Revunkov²

2017

Preprint

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Epiphytic lichens are well-known indicators of air contamination. The chemical composition of lichens is affected by the concentration of pollutants in the environment. Usually, researchers assess long-term variations in trace elements or other pollutants in the study area or identify the spatial features of air contamination. The aim of this study is to create a database of trace element concentrations in the samples of the epiphytic lichen Hypogymnia physodes growing in the Kaliningrad region. The database can be used as a 'reference point' for monitoring studies. Another objective is to identify the spatial patterns of iron, manganese, nickel, cadmium, silver, lead, strontium, rubidium, and calcium in the Kaliningrad region. The samples of wild lichens were collected from pine and birch trees 1.2-1.8 m from the bases of the threes, using a regular grid, in August 2010. One-two-year-old thalli were used in the chemical analysis. The metals Ag, Cd, Cu, Pb, Ni, Fe, Mn, and Zn were determined by AAS (Mn, Fe by flame AAS and the others by ETA-AAS) and the elements Sr, Rb, and Ca by X-ray fluorescence. The concentration of metals in the western coastal area (the Sambian or Kaliningrad Peninsula) is higher than it is in the central and eastern parts of the region. Principal component factor analysis was carried out to detect and characterise different pollution sources and to identify the most polluted areas. The factors of metal emission were described. The authors examined the features of the spatial distribution of trace elements. Prevailing winds are form southwest. Therefore, the highest concentrations of trace elements were found on the Sambian peninsula and on the coasts of the Vistula and Curonian Lagoons. The high concentrations of trace elements in the samples of the lichen H.physodes, which were observed in the coastal part of the region, are associated with human impact and subsequent pollution. The chemical composition of lichens on the Sambian peninsula may have developed under the impact of both local pollution sources -vehicles, thermal energy facilities, and portsand such factors as transboundary traffic and sea spray.

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“…[10]), and many species are important colonisers of degraded soil [11]. Since different lichen taxa display different levels of sensitivity to heavy metals, the presence of particular elements in the environment may produce changes at the community level [12]. Lichens from various genera, including Cladonia, are known to tolerate heavy metal contamination and grow in both polluted and unpolluted areas (see [13,14]).…”

Section: Introductionmentioning

confidence: 99%

Cladonia lichens as the most effective and essential pioneers in strongly contaminated slag dumps

Osyczka

Rola

2013

Open Life Sciences

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Abstract:The epigeic lichen biota of ten post-smelting slag dumps were studied to identify the ecological importance of Cladonia species in spontaneous succession within artificial areas. Species diversity, abundance, constancy and cover indices were determined at the initial stages of vegetation establishment. Substrates under lichen vegetation were characterised in terms of the pH, organic C and total N content, C/N ratio and Zn, Pb, Cd and As concentration. Species occurrence and abundance indices were related to habitat type, enabling the ability to identify species-specific responses to environmental factors. Despite the unfavourable and artificial habitat conditions at dump sites, some Cladonia appear abundant and form swards, with Cladonia rei as a dominant species. They appear to be well-adapted for slag substrate and their special arrangement illustrative of site contamination. Certain sward-forming Cladonia lichens play a fundamental role as effective pioneers in the initial stage of succession and provide stable plant cover development.© Versita Sp. z o.o.Brought to you by | MIT Libraries Authenticated Download Date | 5/9/18 8:15 AM

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Interactions of lichens with heavy metals

Cited by 200 publications

References 84 publications

The Impact of Cadmium on Photosynthetic Performance and Secondary Metabolites in the Lichens Parmelia sulcata, Flavoparmelia caperata and Evernia prunastri

The Impact of Cadmium on Photosynthetic Performance and Secondary Metabolites in the Lichens Parmelia sulcata, Flavoparmelia caperata and Evernia prunastri

Air Pollution Monitoring in the south-east baltic using the epiphytic lichen <em>h</em><em>ypogymnia physodes</em>

Cladonia lichens as the most effective and essential pioneers in strongly contaminated slag dumps

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