Brazilian Journal of Microbiology
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Candida species causing fungal keratitis: molecular identification, antifungal susceptibility, biofilm formation, and clinical aspects
Brazilian Journal of Microbiology - - 2023
First report of tinea corporis caused by Arthroderma benhamiae in Brazil
Brazilian Journal of Microbiology - Tập 50 Số 4 - Trang 985-987 - 2019
Biomineralization processes of calcite induced by bacteria isolated from marine sediments
Brazilian Journal of Microbiology - Tập 46 Số 2 - Trang 455-464
Adopt a Bacterium – an active and collaborative learning experience in microbiology based on social media
Brazilian Journal of Microbiology - Tập 49 - Trang 942-948 - 2018
Copper increases laccase gene transcription and extracellular laccase activity in Pleurotus eryngii KS004
Brazilian Journal of Microbiology - - Trang 1-6 - 2024
The white-rot fungus Pleurotus eryngii secretes various laccases involved in the degradation of a wide range of chemical compounds. Since the laccase production is relatively low in fungi, many efforts have been focused on finding ways to increase it, so in this study, we investigated the effect of copper on the transcription of the pel3 laccase gene and extracellular laccase activity. The results indicate that adding 0.5 to 2 mM copper to liquid cultures of P. eryngii KS004 increased both pel3 gene transcription and extracellular laccase activity in a concentration-dependent manner. The most significant increase in enzyme activity occurred at 1 mM Cu2+, where the peak activity was 4.6 times higher than in control flasks. Copper also induced the transcription of the laccase gene pel3. The addition of 1.5 and 2 mM Cu2+ to fungal culture media elevated pel3 transcript levels to more than 13-fold, although the rate of induction slowed down at Cu2+ concentrations higher than 1.5 mM. Our findings suggest that copper acts as an inducer in the regulation of laccase gene expression in P. eryngii KS004. Despite its inhibitory effect on fungal growth, supplementing cultures with copper can lead to an increased extracellular laccase production in P. eryngii.
Performance of rapid tests for carbapenemase detection among Brazilian Enterobacteriaceae isolates
Brazilian Journal of Microbiology - Tập 49 - Trang 914-918 - 2018
Isolation and expression of two polyketide synthase genes from Trichoderma harzianum 88 during mycoparasitism
Brazilian Journal of Microbiology - Tập 47 - Trang 468-479 - 2016
Polyphasic characterization of bacteria obtained from upland rice cultivated in Cerrado soil
Brazilian Journal of Microbiology - Tập 49 - Trang 20-28 - 2018
Wastewater microbial diversity versus molecular analysis at a glance: a mini-review
Brazilian Journal of Microbiology - Tập 54 - Trang 3033-3039 - 2023
Microorganisms play a vital role in biological wastewater treatment by converting organic and toxic materials into harmless substances. Understanding microbial communities’ structure, taxonomy, phylogeny, and metabolic activities is essential to improve these processes. Molecular microbial ecology employs molecular techniques to study community profiles and phylogenetic information since culture-dependent approaches have limitations in providing a comprehensive understanding of microbial diversity in a system. Genomic advancements such as DNA hybridization, microarray analysis, sequencing, and reverse sample genome probing have enabled the detailed characterization of microbial communities in wastewater treatment facilities. This mini-review summarizes the current state of knowledge on the diversity of microorganisms in wastewater treatment plants, emphasizing critical microbial processes such as nitrogen and phosphorus removal.
High frequency of Chlamydia pneumoniae and risk factors in children with acute respiratory infection
Brazilian Journal of Microbiology - Tập 51 Số 2 - Trang 629-636 - 2020
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