8 documents found, page 1 of 1
Bioprospecting for cellulose-degrading microorganisms
Almeida, Liliana; Alexandrino, Diogo; Oliveira, Rui S.; Carvalho, M. Fátima; Freitas, Marisa; Freitas, MarisaCellulose, a complex polysaccharide, is one of the main components of plant and algae biomass and therefore the most abundant polymer found in nature, serving as a significant carbon source in various ecosystems. Bioprospecting for cellulolytic microbes is a promising strategy for discovering potential biocatalysts for the hydrolysis of lignocellulosic materials, including residues. This work aims to assess the...
Exploring the possible link between fluoride sensitivity and bacterial defluori...
Maia, Tiago; Carvalho, Maria F.; Alexandrino, Diogo A. M.; Alexandrino, DiogoFluoorganic compounds are ubiquitous environmental pollutants due to their widespread use and high environmental persistence, mostly attributed to the stability of their carbon-fluoride bonds. The biotransformation of these compounds has been observed in some microorganisms, but defluorination (cleavage of carbon-fluorine bonds) remains the limiting step. Intracellular accumulation of fluoride occurs during mic...
Complementary field and laboratory batch studies to quantify generation rates o...
Haluska, Alexander Arthur; Röhler, Klaus; Fabregat-Palau, Joel; Alexandrino, Diogo A. M.; Abramov, Sergey; Thompson, Katharine J.; Straub, DanielSoil microbiome changes and generation rates of per- and polyfluoroalkyl substances (PFAS) precursors were studied in a contaminated agricultural field using a combination of field and laboratory batch microcosm studies. 16S rRNA gene amplicon sequencing was used to track how microbial community composition changed over time, while perfluoroalkyl acids (PFAA) generation rates were quantified using a combination...
Microcystin-degrading bacteria reduce bioaccumulation in Fragaria vulgaris and ...
Haida, Mohammed; Khalloufi, Fatima El; Essadki, Yasser; Alexandrino, Diogo A. M.; Mugani, Richard; Hejjaj, Abdessamad; Campos, AlexandreIn Morocco, red fruit production has thrived, primarily utilizing hydroponic methods to control crops, increase fruit yield and quality, and avoid soil-related problems. However, the irrigation of these expansive hydroponic farms relies heavily on water sourced from dams, many of which are contaminated with Microcystins (MCs). To address this contamination issue, ongoing research is focused on discovering effec...
Unveiling the culturable and non‐culturable actinobacterial diversity in two ma...
Girão, Mariana; Alexandrino, Diogo A. M.; Cao, Weiwei; Costa, Isabel; Jia, Zhongjun; Carvalho, Maria F.; Alexandrino, DiogoActinomycetota, associated with macroalgae, remains one of the least explored marine niches. The secondary metabolism of Actinomycetota, the primary microbial source of compounds relevant to biotechnology, continues to drive research into the distribution, dynamics, and metabolome of these microorganisms. In this study, we employed a combination of traditional cultivation and metagenomic analysis to investigate...
Impact of per- and polyfluorinated alkyl substances (PFAS) on the marine enviro...
Bilela, Lada Lukić; Matijošytė, Inga; Krutkevičius, Jokūbas; Alexandrino, Diogo A.M.; Safarik, Ivo; Burlakovs, Juris; Gaudêncio, Susana P.Per- and polyfluorinated alkyl substances (PFAS) have long been known for their detrimental effects on the ecosystems and living organisms; however the long-term impact on the marine environment is still insufficiently recognized. Based on PFAS persistence and bioaccumulation in the complex marine food network, adverse effects will be exacerbated by global processes such as climate change and synergies with oth...
Development of a bioremediation system for the removal of PFAS from aquatic env...
Pinto, Ana Sofia; Neves, David M. B.; Maia, Tiago; Mucha, Ana Paula; Almeida, C. Marisa R.; Martins, Pedro; Lanceros-Mendez, SenetxuAmong the many pollutants that afflict aquatic ecosystems, PFAS (per- and polyfluoroalkyl substances) stand out due to their distribution, environmental persistence and ecotoxicity. Currently, there are no suitable remediation technologies capable of mitigating PFAS-related pollution in these ecosystems. Yet, the combination of nanophotocatalysis (NPC) and bioremediation (BRMD) may prove useful in combating PFA...
Assembly of bacterial consortium for the biodegradation of PFAS and related sub...
Neves, David M. B.; Pinto, Ana Sofia; Mucha, Ana Paula; Almeida, C. Marisa R.; Alexandrino, Diogo A. M.; Carvalho, Maria F.; Alexandrino, DiogoPer- and polyfluoroalkyl substances (PFAS) are man-made chemicals with wide application in consumer products since the 1950s. A recent revision of the PFAS definition has also introduced several polyfluorinated pharmaceuticals and agrochemicals into this class, further exacerbating the urgency of any PFAS-related pollution scenario. Their many favourable properties, including improved persistence and lipophilic...