Acid production of fungi isolated from stones of historical monuments in the state of minas gerais, Brazil

Resende, Machado; Resende, G.C.; Viana, E.M.; Becker, Tim; Warscheid, Thomas

doi:10.1016/0964-8305(96)84357-5

Cited by 22 publications

(19 citation statements)

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“…The major part of studies dealing with stone monuments alterations have concerned the Mediterranean basin, which is characterized by dry and hot climate or temperate climate [6,44,45], and to a lesser extent tropical climates [29,46]. Sterflinger [23] and Burford [45] reported some lists of common fungal species isolated from building stone and rocks (sandstone, marble, granite, limestone, soapstone, quartzite, andesite, and basalt) in various geographical and climatic zones.…”

Section: Fungimentioning

confidence: 99%

“…Sterflinger [23] and Burford [45] reported some lists of common fungal species isolated from building stone and rocks (sandstone, marble, granite, limestone, soapstone, quartzite, andesite, and basalt) in various geographical and climatic zones. Hyphomycetes prevail in moderate and humid climate but can also be found in tropical climate, they usually produce organic acids and pigments of different color, whereas the species from arid and semiarid climate usually do not produce acids and always display a brown-black pigmentation due to melanin [23,46]. A number of recent investigations focused on fungi growing on limestone in tropical climates; after 6 and 9 months of outdoor exposure of limestone coupons inoculated with microorganisms from black biofilm 977 isolates were obtained, and 90% of the species detected belonged to the Ascomycota [47].…”

Section: Fungimentioning

confidence: 99%

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The Role of Fungi and Lichens in the Biodeterioration of Stone Monuments

Salvadori¹,

Municchia²

2016

Open Conf. Proceed. J.

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This review elucidates current knowledge on the significant role of fungi and lichens in the biodeterioration of stone monuments. The effect caused by many epilithic lichen species in the deterioration of different types of stone has been extensively investigated and demonstrated. Nonetheless, many aspects of the deterioration mechanisms of microcolonial fungi (MFC) and endolithic lichens are still to be proved. An interesting hypothesis has recently been put forward involving the secretion of siderophores like compounds. Lichens can provide bioprotection for stone surfaces, acting as a barrier against weathering, retaining moisture, increasing waterproofing, reducing thermal stress and erosion, and absorbing pollutants. Nevertheless, the evaluation of biodeterioration vs. bioprotection cannot be generalised, since it can vary according to the behaviour of different species, as well as being affected by both the lithotype and the environment. In addition to the laboratory studies, more field studies of biological communities are required, to analyse their establishment and succession in natural conditions and after conservation treatments. In order to guarantee the best decision for stone conservation, cleaning operations should not be based on a generalised approach, but should rather be based on a careful evaluation of different aspects concerning biodeterioration and bioprotection.

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Section: Fungimentioning

confidence: 99%

Section: Fungimentioning

confidence: 99%

The Role of Fungi and Lichens in the Biodeterioration of Stone Monuments

Salvadori¹,

Municchia²

2016

Open Conf. Proceed. J.

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“…The use of stone in the construction of monuments and sculptures has had some consequences over time, like the appearance of patinas [8] such as black films or biofilms [9]. These patinas have been identified in granite substrates [10][11][12], marble [13], all over the world, like Italian stone monuments [14] and historical monuments in Brazil [15][16][17].…”

Section: Biocidal Effect Of Gamma Radiation On the Ecology Of Filamenmentioning

confidence: 99%

“…A mixture of 1 mg of the pulverized material collected in 9 mL of saline solution was subjected to serial dilutions between 10 -1 and 10 -3 with 0.85% saline solution supplemented with 0.001% Tween 80. The prepared samples were plated on Czapek Dox Agar (Difco Laboratories, Detroit, MI, USA) by the spread plate method and incubated for 14 days at 27 °C [15]. Fungal colonies were isolated and identified by slide culture and visualization with light microscopy followed by DNA sequencing.…”

Section: Sample Collection and Fungal Isolationmentioning

confidence: 99%

Biocidal Effect of Gamma Radiation on the Ecology of Filamentous Fungal Populations Associated with Stone Deterioration

Boniek¹,

Mendes²,

Santos³

et al. 2017

JESE-A

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This study focused on the identification of the filamentous fungi associated with soapstone samples exposed to outdoor conditions and the biocidal effect of gamma radiations on isolated fungal populations in Minas Gerais State in Brazil. Two soapstone blocks were placed outdoors under tropical environmental conditions for 12 months. A total of 9 filamentous fungal populations were identified on their surfaces, namely Acremomium (cf.) alternatum, Alternaria alternata, Aspergillus fumigatus, Calcarisporium (cf.) arbuscula, Cladosporium cladosporioides, Curvularia lunata, Epicoccum nigrum, Fusarium equiseti and Penicillium citrinum. The gamma radiation assay was then carried out as a test of biocidal action by exposing all fungal populations to the ionizing radiation. The results showed that only the C. cladosporioides species was resistant to this biocidal agent, since it was able to increase its population post exposure. Scanning electron microscopy images identified the microbial colonization on the soapstone blocks and the stone elementar composition was analyzed by energy dispersive X-ray spectrometry. After treatment, there was no structural and aesthetic alteration in the soapstone samples, and evidencing that gamma radiation can be used as a biocidal agent. However, the resistance of the black fungal population indicates caution in the choice of gamma irradiation as biocidal treatment.

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“…Others studies demonstrated the isolation of organic acids producing fungal species such as Verticillium lecanii, Penicillium expansum, P. nigricans, Aspergillus japonicus, A. ochraceus, A. puniceus, Mucor hiemalis, and Fusarium oxysporum from quartzite and soapstone samples from the cities Congonhas [6], Ouro Preto and Caraça, also in Brazil [23].…”

Section: Introductionmentioning

confidence: 99%

Effect of Environmental Factors on Rock-inhabiting Fungal Communities from Brazilian Soapstone Sampleshttp://www.davidpublisher.org/index.php/Home/Article/index?id=31207.html

Boniek¹,

Oliveira²,

Ribeiro³

et al. 2017

JESE-B

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Abstract:The present study aims to evaluate the environmental effect on fungal community composition associated with biodeterioration occurring in stones (soapstone) at two distinct locations in Minas Gerais State, Brazil: Congonhas city and Sanctuary of Caraça. Four collections of fungal communities over one year were obtained from both research sites from the soapstone block surfaces exposed for over two decades. The molecular diversity profile of the fungal community at the two localities was obtained by DGGE (Denaturing Gradient Gel Electrophoresis), and the genomes of the most representative population were sequenced. DGGE showed the formation of two clusters with filamentous fungal communities. Sequencing of the most representative bands revealed the presence of fungi associated with the biodeterioration of soapstone. In addition, many of the identified species were associated with photobionts that could generate lichens, indicating that environmental characteristics affect the occurrence of filamentous fungi, which leads to biodeterioration of stones. Authors' study focused on an environmental variation of an extreme habitat for fungi associated with soapstone in the state of Minas Gerais, Brazil and identified the presence of interesting rock-inhabiting fungal communities including species related to lichens, which can accelerate the deterioration of stones by the production of organic acids.

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Acid production of fungi isolated from stones of historical monuments in the state of minas gerais, Brazil

Cited by 22 publications

References 0 publications

The Role of Fungi and Lichens in the Biodeterioration of Stone Monuments

The Role of Fungi and Lichens in the Biodeterioration of Stone Monuments

Biocidal Effect of Gamma Radiation on the Ecology of Filamentous Fungal Populations Associated with Stone Deterioration

Effect of Environmental Factors on Rock-inhabiting Fungal Communities from Brazilian Soapstone Sampleshttp://www.davidpublisher.org/index.php/Home/Article/index?id=31207.html

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