Publications by authors named "M Caeiro"
This correction refers to two new genera ( and ) and three new species combinations published in [...
View Article and Find Full Text PDFRedefining the Genus Based on Morphological and Phylogenetic Approaches.
J Fungi (Basel)
August 2023
The present study, initially to resolve the cryptic species within , is to determine how to attain taxonomic discrimination at species and generic levels. Multiple sequence alignments (MSAs) of the ITS, 28S, and 18S regions of the nuclear ribosomal cistron were separately subjected to pairwise distance assessments, Bayesian, and Maximum likelihood phylogenetic analyses. Morphological descriptions of 15 type strains of species, along with MSAs involving representatives of the whole genus (268 isolates, many from ) totaling 355 published sequences, allowed phylogenetic assessments conducted to the following p-distance thresholds in the ITS/28S regions: ≥3%/1% for species segregation and ≥8%/2% for generic segregation.
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- The study focuses on an aromatic plant from Portugal known for its anti-inflammatory effects, examining its secretory structures and essential oil (EO) for potential antiviral properties.
- Specific structures like glandular trichomes and secretory ducts were identified, producing oleoresin and flavonoid-rich resin, while the EO contained 50 compounds with monoterpenes as the primary components.
- Results showed the EO could inhibit herpes simplex viruses HSV-1 and HSV-2 in a dose-dependent manner during infection, but did not demonstrate direct virucidal effects, indicating a need for further research into its antiviral mechanism.
Although the SARS-CoV-2 virus has been detected in wastewater from several countries, monitoring its presence in other water matrices is still limited. This study aimed to evaluate the presence of this virus in natural and drinking water over one year of monitoring (2021). A survey of viral RNA was carried out by RT-qPCR in concentrated samples of surface water, groundwater, and drinking water from different regions of Portugal.
View Article and Find Full Text PDFThis study aims to study the kinetics and mechanisms of human adenovirus inactivation by electron beam. Human adenovirus type 5 (HAdV-5) was inoculated in two types of aqueous substrates (phosphate-buffered saline - PBS, domestic wastewater - WW) treated by electron beam at a dose range between 3 and 21 kGy. Samples were evaluated for virus infectivity, PCR amplification of fragments of HAdV-5 genome and abundance and antigenicity of the virion structural proteins.
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