RT Journal Article
T1 Effect of Inorganic Carbon Concentration on the Development of Subaerial Phototrophic Biofilms on Granite
A1 Vázquez Nión, Daniel
A1 Fuentes Alonso, Elsa
A1 Prieto Lamas, Beatriz
K1 Biodeterioration
K1 Climate change
K1 Cultural heritage
K1 Cyanobacteria
K1 Synechocystis sp. PCC 6803
AB Organisms living at the stone–air interface are expected to be affected by changes in the atmospheric composition due to greenhouse gases emissions. Increased CO2 concentrations may particularly affect phototrophic microorganisms that colonize stone cultural heritage and form subaerial biofilms. However, little is known about the effects of the environmental changes on microorganisms that colonize stone and the consequences for cultural heritage conservation. In the present study, we investigated how an increase in inorganic carbon concentration affected the development of a subaerial biofilm composed by the cyanobacterium Synechocystis sp. PCC 6803 grown on granite. For this purpose, we established two experiments on biofilm formation, with and without addition of inorganic carbon to the growth medium. Higher concentrations of carbon promoted biofilm growth and increased the concentrations of the photosynthetic pigments chlorophyll a and carotenoids on granite surface, potentially exacerbating the aesthetic impact of these biofilms on stone-made cultural heritage. However, the extracellular polysaccharides produced were not significantly affected by carbon availability, so that physical stone biodeterioration might not be increased by the cyanobacterial matrix. The findings provide valuable data on how the existing global change scenario might affect organisms inhabiting stone cultural heritage and encourage to develop new sustainable treatments and methodologies to prevent biodeterioration and thus preserve stone cultural heritage
PB MDPI
YR 2020
FD 2020
LK http://hdl.handle.net/10347/24040
UL http://hdl.handle.net/10347/24040
LA eng
NO Vázquez-Nion, D.; Fuentes, E.; Prieto, B. Effect of Inorganic Carbon Concentration on the Development of Subaerial Phototrophic Biofilms on Granite. Coatings 2020, 10, 1049
NO This study was partly financed through project CGL2016-79778-R (AEI/FEDER, UE) and Xunta de Galicia (ED431 2018/32). D. Vázquez-Nion was financially supported by Postdoctoral Fellowship-Contract from Xunta de Galicia (ED481B/2017/016). E. Fuentes was financially supported by a PhD Fellowship-Contract MICINN-FPI (BES-2017-079927)
DS Minerva
RD 27 abr 2026