21 documents found, page 1 of 3
Exploring Differences in Culturable Fungal Diversity Using Standard Freezing In...
Paiva, Diana S.; Fernandes, Luís; Pereira, Emilia; Trovão, João; Mesquita, Nuno; Tiago, Igor; Portugal, AntónioIn this study, we explored the biodiversity and abundance of culturable fungi in four samples associated with different biodeterioration outlines collected from the Lemos Pantheon, a limestone-built artwork in Portugal. We compared the results from prolonged standard freezing with those previously obtained from fresh samples to analyze differences in the obtained community and assess the effectiveness of the st...
Phototrophic Colonization in Dolomitic Limestone: Comparison between Single vs ...
Soares, Fabiana; Trovão, João; Tiago, Igor; Cardoso, Susana M.; Gil, Francisco; Catarino, Lídia G.; Portugal, AntónioPhototrophic organisms, such as microalgae and cyanobacteria, are known to be major contributors to stone decay. The purpose of this study was to assess the dolomitic limestone colonization by phototrophic organisms, using single vs artificial multispecies, under laboratory conditions. To achieve this aim, dolomitic limestone blocks were inoculated with single phototrophic species previously collected from the ...
A multidisciplinary approach to the comparison of three contrasting treatments ...
Addesso, Rosangela; Baldantoni, Daniela; Cubero, Beatriz; De La Rosa, José Maria; González Pérez, José Antonio; Tiago, Igor; Caldeira, Ana TeresaRemoving lampenflora, phototrophic organisms developing on rock surfaces in tourist cavities due to the artificial lighting, is a challenge for sustainable and appropriate long-term management of caves. Photosynthetic-based biofilms usually cause rock biodeterioration and an ecological imbalance in cave ecosystems. In this work, a detailed investigation of the effects of the 3 most commonly used lampenflora cle...
Footprints of a microbial toxin from the gut microbiome to mesencephalic mitoch...
Esteves, A. Raquel; Munoz-Pinto, Mário F; Nunes-Costa, Daniela; Candeias, Emanuel; Silva, Diana F. F.; Magalhães, João Duarte; Santos, A. Raquel PereiraObjective Idiopathic Parkinson’s disease (PD) is characterised by alpha-synuclein (aSyn) aggregation and death of dopaminergic neurons in the midbrain. Recent evidence posits that PD may initiate in the gut by microbes or their toxins that promote chronic gut inflammation that will ultimately impact the brain. In this work, we sought to demonstrate that the effects of the microbial toxin β-N- methylamino- L- al...
Expanding the Microcolonial Black Fungi Aeminiaceae Family: Saxispiralis lemnor...
Paiva, Diana S.; Trovão, João; Fernandes, Luís; Mesquita, Nuno; Tiago, Igor; Portugal, AntónioWith an impressive ability to survive in harsh environments, black fungi are an ecological group of melanized fungi that are widely recognized as a major contributor to the biodeterioration of stone cultural heritage materials. As part of the ongoing efforts to study the fungal diversity thriving in a deteriorated limestone funerary art piece at the Lemos Pantheon, a national monument located in Águeda, Portuga...
Air and wall mycobiota interactions—A case study in the Old Cathedral of Coimbra
Mesquita, Nuno; Soares, Fabiana; Paiva de Carvalho, Hugo; Trovão, João; Pinheiro, Ana Catarina; Tiago, Igor; Portugal, AntónioThe microbiota present in public buildings - fungal, algae and fungi that thrive in buildings and in their construction materials - influence the structural condition as well as, potentially, the health of those who live, work, or visit them. These organisms can colonise and deteriorate all kinds of construction materials such as stone, wood, bricks, glass, steal and metals, concrete, ceramics, tiles, among oth...
A review on urinary tract infections diagnostic methods: Laboratory-based and p...
Santos, Marta; Mariz, Marcos; Tiago, Igor; Martins, Jimmy; Alarico, Susana; Ferreira, PaulaUrinary tract infections (UTIs) are among the most common infectious diseases worldwide. This type of infections can be healthcare-associated or community-acquired and affects millions of people every year. Different diagnostic procedures are available to detect pathogens in urine and they can be divided into two main categories: laboratory-based and point-of-care (POC) detection techniques. Traditional methodo...
Footprints of a microbial toxin from the gut microbiome to mesencephalic mitoch...
Esteves, A. Raquel; Munoz-Pinto, Mário F.; Nunes-Costa, Daniela; Candeias, Emanuel; Silva, Diana F.; Magalhães, João D.; Pereira-Santos, A. RaquelIdiopathic Parkinson's disease (PD) is characterised by alpha-synuclein (aSyn) aggregation and death of dopaminergic neurons in the midbrain. Recent evidence posits that PD may initiate in the gut by microbes or their toxins that promote chronic gut inflammation that will ultimately impact the brain. In this work, we sought to demonstrate that the effects of the microbial toxin β-N-methylamino-L-alanine (BMAA) ...
The Leaf Bacterial Microbiota of Female and Male Kiwifruit Plants in Distinct S...
Ares, Aitana; Pereira, Joana; Garcia, Eva; Costa, Joana; Tiago, IgorThe Pseudomonas syringae pv. actinidiae pandemic has been compromising the production of the kiwifruit industry in major producing countries. Abiotic factors and plant gender are known to influence the disease outcome. To better understand their impact, we have determined the diversity of the leaf bacterial communities using the V5-V6 region of the 16S ribosomal RNA gene amplicon on the Illumina MiSeq sequencin...
Parakomarekiella sesnandensis gen. et sp. nov. (Nostocales, Cyanobacteria) isol...
Soares, Fabiana; Ramos, Vitor; Trovão, João; Cardoso, Susana M.; Tiago, Igor; Portugal, AntónioIn a study that aimed to fingerprint the phototrophic community of the biodeteriorated walls of the Old Cathedral of Coimbra (UNESCO World Heritage Site), an unknown Nostoc/Komarekiella-like cyanobacterium was isolated. We employed a polyphasic approach based on morphological, ecological and phylogenetic analyses of the partial 16S and the whole 16S-23S ITS rRNA regions to characterize this organism. Our strain...