Microbiology: Recent submissions
Now showing items 21-40 of 333
-
Cultivating antimicrobial resistance: how intensive agriculture ploughs the way for antibiotic resistance
(2023)Antimicrobial resistance (AMR) is a growing threat to public health, global food security and animal welfare. Despite efforts in antibiotic stewardship, AMR continues to rise worldwide. Anthropogenic activities, particularly ... -
Resource heterogeneity and the evolution of public goods cooperation
(2020)Heterogeneity in resources is a ubiquitous feature of natural landscapes affecting many aspects of biology. However, the effect of environmental heterogeneity on the evolution of cooperation has been less well studied. ... -
Species interactions drive the spread of ampicillin resistance in human-associated gut microbiota
(2021)Background and objectives: Slowing the spread of antimicrobial resistance is urgent if we are to continue treating infectious diseases successfully. There is increasing evidence microbial interactions between and within ... -
Stress causes interspecific facilitation within a compost community
(2021)Ecological theory predicts interactions between species to become more positive under abiotic stress, while competition should prevail in more benign environments. However, experimental tests of this stress gradient ... -
Development of liquid culture media mimicking the conditions of sinuses and lungs in cystic fibrosis and health
(2022)The respiratory tract is a compartmentalised and heterogenous environment. The nasopharynx and sinuses of the upper airways have distinct properties from the lungs and these differences may shape bacterial adaptation ... -
Understanding the Role of Host Factors in the Modulation of Virulence Factors of Staphylococcus aureus.
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2023)Staphylococcus aureus is adept at colonising and infecting the human host. Host factors are known to influence pathogen physiology and this thesis aimed to examine the effects of human bile and human plasmin on S. aureus. ... -
Distinct phenotypes and transcriptomes of tup1 and cyc8 mutants suggest novel roles for TUP1 and CYC8 in Saccharomyces cerevisiae
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2023)The Tup1-Cyc8 (Ssn6) co-repressor complex is a regulator of gene transcription in the yeast Saccharomyces cerevisiae. This project provides insights into the distinct roles of Tup1p and Cyc8p in gene repression, identifies ... -
Investigating Tup1-Cyc8 complex function in Saccharomyces cerevisiae following the confirmation and characterization of a TUP1 conditional mutant
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2023)The Tup1-Cyc8 complex is a well-defined corepressor complex found in S. cerevisiae. It is known to regulate close to 3% of all yeast genes and has orthologs reported in mammals. Its exact functioning is not well-understood. ... -
Genetic and Molecular Studies of Virulence Factors of Staphylococcus aureus
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2023) -
Investigation of the cellular location of Multicopper Oxidase and its contribution to copper tolerance and immune resistance in Staphylococcus aureus
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2022)In high amounts copper exerts toxic effects on bacteria, and therefore its cellular concentrations must be tightly controlled. Staphylococcus aureus is a WHO priority pathogen responsible of an enormous burden on healthcare ... -
Aneuploidy influences the gene expression profiles in Saccharomyces pastorianus group I and II strains during fermentation
(2022)The lager yeasts, Saccharomyces pastorianus, are hybrids of Saccharomyces cerevisiae and Saccharomyces eubayanus and are divided into two broad groups, Group I and II. The two groups evolved from at least one common ... -
Packing a punch: Understanding how flavours are produced in lager fermentations
(2021)Beer is one of the most popular beverages in the world and it has an irreplaceable place in culture. Although invented later than ale, lager beers dominate the current market. Many factors relating to the appearance (colour, ... -
Population genomics of the pathogenic yeast Candida tropicalis identifies hybrid isolates in environmental samples
(2021)Candida tropicalis is a human pathogen that primarily infects the immunocompromised. Whereas the genome of one isolate, C. tropicalis MYA-3404, was originally sequenced in 2009, there have been no large-scale, multi-isolate ... -
Transcriptional Profile of the Industrial Hybrid Saccharomyces pastorianus Reveals Temperature-Dependent Allele Expression Bias and Preferential Orthologous Protein Assemblies
(2021)Saccharomyces pastorianus is a natural yeast evolved from different hybridization events between the mesophilic S. cerevisiae and the cold-tolerant S. eubayanus. This complex aneuploid hybrid carries multiple copies of the ... -
A Novel Method to Identify and Characterise Peptide Mimotopes of Heat Shock Protein 70-associated antigens
(2006)The heat shock protein, Hsp70, has been shown to play an important role in tumour immunity. Vaccination with Hsp70-peptide complexes (Hsp70-PCs), isolated from autologous tumour cells, can induce protective immune responses. ... -
The complex and dynamic genomes of industrial yeasts
(2009)The Saccharomyces sensu stricto genus contains many species that are industrially important for fermentation of wines, beers and ales. The molecular characterization of the genomes of yeasts involved in these processes ... -
Recombination Sites on Hybrid Chromosomes in S. pastorianus share Common Sequence Motifs and define a Complex Evolutionary Relationship between Group I and II Lager Yeasts
(2017)Saccharomyces pastorianus, referred to as lager yeasts, are hybrids of S. cerevisiae and S. eubayanus. Isolates within the species are divided into two groups (I and II) based on chromosome structure and composition. ... -
Fermentation innovation through complex hybridization of wild and domesticated yeasts
(2019)The most common fermented beverage, lager beer, is produced by interspecies hybrids of the brewing yeast Saccharomyces cerevisiae and its wild relative S. eubayanus. Lager-brewing yeasts are not the only example of hybrid ... -
Lactobacillus spp. for Gastrointestinal Health: Current and Future Perspectives
(2022)In recent decades, probiotic bacteria have become increasingly popular as a result of mounting scientific evidence to indicate their beneficial role in modulating human health. Although there is strong evidence associating ... -
Accelerated Evolution of Lager Yeast Strains for Improved Flavour Profiles
(Trinity College Dublin. School of Genetics & Microbiology. Discipline of Microbiology, 2022)S. pastorianus is an interspecific hybrid resulting from natural hybridization between S. cerevisiae and S. eubayanus. These two species belong to the Saccharomyces genus, a genus that encompasses different species related ...
