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Mucor thermorhizoides-A New Species from Post-mining Site in Sudety Mountains (Poland).
Curr Microbiol
June 2024
Institute of Evolutionary Biology, Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, ul. Żwirki i Wigury 101, 02-089, Warsaw, Poland.
Mucor representatives are mostly rapidly growing cosmopolitan soil saprotrophs of early diverged Mucoromycotina subphylum. Although this is the most speciose genus within the group, some lineages are still understudied. In this study, new species of Mucor was isolated from the post-mining area in southwestern Poland, where soil chemical composition analysis revealed high concentration of hydrocarbons and heavy metals.
View Article and Find Full Text PDFEpidemiology and Genetic Relationship of Toxigenic Fungi in Maize Grains From North Central Nigerian States.
Environ Health Insights
May 2024
Department of Microbiology, Federal University of Lafia, Lafia, Nasarawa State, Nigeria.
Contamination of maize adversely affects maize quality, yield, and export creating a gap in the attainment of food security, which is a millenium development goal in Nigeria. The study determined fungal abundance, genetic variability, and prevalence of toxigenic fungi in maize grains consumed in North Central, Nigeria. Sixty composite stored maize samples were collected and fungi were isolated and identified after which a multiplex polymerase chain reaction was used to confirm the presence of mycotoxin regulatory genes in suspected toxigenic fungi.
View Article and Find Full Text PDFMicrobial and clinical epidemiology of invasive fungal rhinosinusitis in hospitalized COVID-19 patients, the divergent causative agents.
Med Mycol
March 2023
Department of Medical Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
Since COVID-19 spread worldwide, invasive fungal rhinosinusitis (IFRS) has emerged in immunocompromised patients as a new clinical challenge. In this study, clinical specimens of 89 COVID-19 patients who presented clinical and radiological evidence suggestive of IFRS were examined by direct microscopy, histopathology, and culture, and the isolated colonies were identified through DNA sequence analysis. Fungal elements were microscopically observed in 84.
View Article and Find Full Text PDFHeterochromatin and RNAi act independently to ensure genome stability in Mucorales human fungal pathogens.
Proc Natl Acad Sci U S A
February 2023
Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710.
Chromatin modifications play a fundamental role in controlling transcription and genome stability and yet despite their importance, are poorly understood in early-diverging fungi. We present a comprehensive study of histone lysine and DNA methyltransferases across the Mucoromycota, emphasizing heterochromatin formation pathways that rely on the Clr4 complex involved in H3K9-methylation, the Polycomb-repressive complex 2 driving H3K27-methylation, or DNMT1-like methyltransferases that catalyze 5mC DNA methylation. Our analysis uncovered H3K9-methylated heterochromatin as the major chromatin modification repressing transcription in these fungi, which lack both Polycomb silencing and cytosine methylation.
View Article and Find Full Text PDFDNA Methylation on N6-Adenine Regulates the Hyphal Development during Dimorphism in the Early-Diverging Fungus .
J Fungi (Basel)
September 2021
Departamento de Genética y Microbiología, Facultad de Biología, Universidad de Murcia, 30100 Murcia, Spain.
The epigenetic modifications control the pathogenicity of human pathogenic fungi, which have been poorly studied in Mucorales, causative agents of mucormycosis. This order belongs to a group referred to as early-diverging fungi that are characterized by high levels of N6-methyldeoxy adenine (6mA) in their genome with dense 6mA clusters associated with actively expressed genes. AlkB enzymes can act as demethylases of 6mA in DNA, with the most remarkable eukaryotic examples being mammalian ALKBH1 and NMAD-1.
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