Subaerial biofilms on granitic historic buildings: microbial diversity and development of phototrophic multi-species cultures

Vázquez-Nion, Daniel; Rodríguez-Castro, Jorge; López-Rodríguez, Ma Carmen; Fernández-Silva, Iria; Prieto, B.

doi:10.1080/08927014.2016.1183121

Cited by 50 publications

(24 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The culture selected for the experimentation was already described in the study of Vázquez-Nion et al [22]. This latter is mainly characterized by the presence of phototrophic microorganisms (green algae and cyanobacteria), in particular: Bracteacoccus minor (Schmidle ex Chodat) Petrová, Stichococcus bacillaris Nägeli, Chlorella sp., Isocystis sp., Aphanocapsa sp., Leptolyngbya cebennensis (Gomont) I.Umezaki and M.Watanabe.…”

Section: Granite Blocks Inoculated With Phototrophic Microorganismsmentioning

confidence: 99%

Phytochemical Compounds as Cleaning Agents on Granite Colonized by Phototrophic Subaerial Biofilms

et al. 2020

View full text Add to dashboard Cite

The society has become increasingly interested in using natural products over chemicals for cleaning activities. In this study, the cleaning potential of formulations embedded in a hydrogel matrix and composed respectively of essential oils (EOs) of Origanum vulgare, Thymus vulgaris, and Calamintha nepeta, and their respective main active components (EO-ACs), viz., Carvacrol, Thymol, and Pulegone, on a phototropic biofilm growing on granite was investigated. In addition, and for comparative purposes, analysis with the combination of the three EOs, the combination of the three EO-ACs, and Preventol RI-80® (one of the most effective commercial cleaning agents based on quaternary ammonium salts) in all three cases embedded in a hydrogel matrix, as well as only the hydrogel matrix, distilled water, and Preventol RI-80®, in both latter cases applied with brush, were also studied. The cleaning effect of the treatments was assessed immediately after the treatment and after one and two weeks by color spectrophotometry, a reliable tool to evaluate the presence and vitality of the phototrophs and the cleaning effectiveness in granite. C. nepeta and its active component Pulegone proved to be the most effective and yielded similar results, comparable to those of uncolonized granite, and better than those obtained with Preventol RI-80® applied with brush (most common way), especially at the end of the experiment. These promising first results support the suitable use of the phytochemical compounds used on phototrophs field where there are still few published studies and encourage further investigation toward the evaluation of their exhibited biocidal activity.

show abstract

Section: Granite Blocks Inoculated With Phototrophic Microorganismsmentioning

confidence: 99%

Phytochemical Compounds as Cleaning Agents on Granite Colonized by Phototrophic Subaerial Biofilms

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The green algae Trebouxiophyceae was also common on rock surfaces regardless of geographic location. Like the fungal orders Chaetothyriales and Capnodiales, these algae can be components of subaerial biofilms on rock surfaces (Gorbushina, 2007;V azquez-Nion et al, 2016), or can live as lichen photobionts (Muggia et al, 2013). Members of Trebouxiophyceae are often radiation and desiccation-resistant (Rivasseau et al, 2016), traits that likely enable effective colonization of rock surfaces.…”

Section: Diversity Of Rock Associated Communitiesmentioning

confidence: 99%

Tales from the tomb: the microbial ecology of exposed rock surfaces

Brewer

Fierer

2017

Environmental Microbiology

View full text Add to dashboard Cite

Although a broad diversity of eukaryotic and bacterial taxa reside on rock surfaces where they can influence the weathering of rocks and minerals, these communities and their contributions to mineral weathering remain poorly resolved. To build a more comprehensive understanding of the diversity, ecology and potential functional attributes of microbial communities living on rock, we sampled 149 tombstones across three continents and analysed their bacterial and eukaryotic communities via marker gene and shotgun metagenomic sequencing. We found that geographic location and climate were important factors structuring the composition of these communities. Moreover, the tombstone-associated microbial communities varied as a function of rock type, with granite and limestone tombstones from the same cemeteries harbouring taxonomically distinct microbial communities. The granite and limestone-associated communities also had distinct functional attributes, with granite-associated bacteria having more genes linked to acid tolerance and chemotaxis, while bacteria on limestone were more likely to be lichen associated and have genes involved in photosynthesis and radiation resistance. Together these results indicate that rock-dwelling microbes exhibit adaptations to survive the stresses of the rock surface, differ based on location, climate and rock type, and seem pre-disposed to different ecological strategies (symbiotic versus free-living lifestyles) depending on the rock type.

show abstract

“…Among the subaerial biofilm microorganisms, the phototrophs play a very important role, since the input of nitrogen and carbon to the biofilm depends on their metabolism. Furthermore, phototrophs synthesize most of the biofilm exopolysaccharide matrix (Cary et al 2010, Vázquez-Martínez et al 2014, Rossi & De Philippis 2015, Vázquez-Nion et al 2016.…”

Section: Introductionmentioning

confidence: 99%

Nodosilinea chupicuarensis sp. nov. (Leptolyngbyaceae, Synechococcales) a subaerial cyanobacterium isolated from a stone monument in central Mexico

et al. 2018

View full text Add to dashboard Cite

Microorganisms of subaerial biofilms, which develop on the surface of stone monuments, have been widely studied due to their impact on Cultural Heritage deterioration. Nevertheless, these extremophile microorganisms are poorly characterised. In this study, a cyanobacterial strain isolated from an archaeological zone in north-central Mexico was characterised through a polyphasic study based on ecological, morphological, and molecular data. Phylogenetic analyses were done using sequences of the 16S rRNA gene and the 16S-23S ITS region. Based on the polyphasic data, a new species corresponding to the genus Nodosilinea is described. This alkaliphilic species has optimum growth at pH of 9. Its fatty acid profile indicates that C18:1, 9E and C16:0 are its most abundant fatty acids. Extracellular polymeric substance production was verified on this strain. Only a few species of the genus Nodosilinea have been documented and described, and this is the first report of their presence in central Mexico. Hence the name Nodosilinea chupicuarensis sp. nov. is proposed.

show abstract

Subaerial biofilms on granitic historic buildings: microbial diversity and development of phototrophic multi-species cultures

Cited by 50 publications

References 42 publications

Phytochemical Compounds as Cleaning Agents on Granite Colonized by Phototrophic Subaerial Biofilms

Phytochemical Compounds as Cleaning Agents on Granite Colonized by Phototrophic Subaerial Biofilms

Tales from the tomb: the microbial ecology of exposed rock surfaces

Nodosilinea chupicuarensis sp. nov. (Leptolyngbyaceae, Synechococcales) a subaerial cyanobacterium isolated from a stone monument in central Mexico

Contact Info

Product

Resources

About