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Título

Potential of natural biocides for biocontrolling phototrophic colonization on limestone

AutorSasso, S.; Miller, A. Z. CSIC ORCID; Rogerio Candelera, Miguel A. CSIC ORCID ; Cubero, Beatriz CSIC ; Coutinho, M. L.; Scrano, Laura; Bufo, Sabino A.
Palabras claveStone
Biodeterioration
Biocide
Phototrophic colonization
Digital image analysis
Fecha de publicaciónfeb-2016
EditorElsevier
CitaciónInternational Biodeterioration and Biodegradation 107: 102-110 (2016)
ResumenRocks, either in natural geological outcrops or in stone monuments, are common habitats for a wide variety of microorganisms which colonize both rock surfaces and cracks. Physical properties such as porosity and surface roughness make limestone susceptible to biological colonization, which may induces aesthetic and/or physical and chemical damages. Organisms causing biodeterioration on monuments have usually been controlled by chemical products (biocides). In order to overcome the impact of these substances on the environment, human health and stone substrates, alternative tools such as natural products from plants or microorganisms can be used as an innovative approach for stone conservation. In this work, the efficiency of natural biocides (cells free culture filtrates of Trichoderna harzianum and Burkholderia gladioli, as well as glycoalkaloids from spontaneous Solanaceae) was tested under laboratory conditions against a multi-species phototrophic culture developing on Hontoria limestone. Their efficiency was assessed by digital image analysis, in vitro chlorophyll a quantification and confocal laser scanning microscopy. These techniques showed a good correlation, revealing that cells free filtrate of Trichoderma harzianum had an antagonistic action against the multi-species phototrophic culture tested in this work.
Descripción9 páginas.-- 5 figuras.-- 1 tabla.-- 73referencias.--
Versión del editorhttps://doi.org/10.1016/j.ibiod.2015.11.017
URIhttp://hdl.handle.net/10261/155917
DOI10.1016/j.ibiod.2015.11.017
ISSN0964-8305
Aparece en las colecciones: (IRNAS) Artículos




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