Video Experimental Relacionado
Updated: Sep 9, 2025
10:33
Isolation of Culturable Yeasts and Molds from Soils to Investigate Fungal Population Structure
Published on: May 27, 2022
5.8K
Diversidad de levaduras en las playas de los lagos de arena utilizados para la recreación en Olsztyn, Polonia
Tomasz Bałabański1,2, Anna Biedunkiewicz1, Jan P Jastrzębski3
1Department of Microbiology and Mycology, Faculty of Biology and Biotechnology, University of Warmia and Mazury in Olsztyn, Oczapowski 1A St., 10-719 Olsztyn, Poland.
Pathogens (Basel, Switzerland)
|August 28, 2025
Resumen
La arena de la playa de Olsztyn alberga diversas levaduras, incluidas especies potencialmente patógenas, que representan un riesgo para la salud pública. Se recomienda un control continuo de la limpieza micológica de la arena de la playa para prevenir las micosis humanas.
Área de la Ciencia:
- Microbiología ambiental
- Micología médica
- Salud pública
Sus antecedentes:
- Las levaduras se adaptan a diversos entornos, incluidos el suelo y la arena, y circulan dentro de los ecosistemas de los lagos.
- Las actividades humanas en las playas pueden aumentar la transmisión de levaduras, lo que plantea preocupaciones sanitarias y epidemiológicas.
Objetivo del estudio:
- Identificar y cuantificar levaduras potencialmente patógenas en la arena de la playa de Olsztyn, Polonia.
- Evaluar el riesgo sanitario-epidemiológico asociado a la contaminación por levaduras en las zonas de playa recreativas.
Principales métodos:
- Se recogieron muestras de arena de 12 sitios en cuatro lagos de Olsztyn durante las temporadas de verano (2019-2020).
- Para el aislamiento e identificación de la levadura se emplearon métodos de laboratorio micológicos de diagnóstico estándar.
- La cuantificación de las células de levadura viables se realizó utilizando unidades de formación de colonias por gramo (UFC/g).
Principales resultados:
- Se identificaron un total de 259 aislamientos de levadura, que representan 62 especies y 47 géneros.
- Ocho especies de levadura aisladas se clasificaron como de nivel de bioseguridad 2 (BSL-2) y grupo de riesgo 2 (RG-2).
- Las concentraciones de levadura variaron estacionalmente, con niveles más altos observados a mediados del verano y niveles más bajos en primavera y otoño.
Conclusiones:
- La arena de la playa de Olsztyn está contaminada con levaduras, algunas de las cuales son agentes etiológicos de micosis humanas.
- El seguimiento sanitario-epidemiológico de la arena de la playa es crucial.
- Se necesitan más investigaciones y regulaciones legales adecuadas para garantizar la seguridad micológica de la arena de playa.
Videos de Conceptos Relacionados
01:28Yeast Signaling
14.8K
Yeasts are single-celled organisms, but unlike bacteria, they are eukaryotes (cells with a nucleus). Cell signaling in yeast is similar to signaling in other eukaryotic cells. A ligand, such as a protein or a small molecule released from a yeast cell, attaches to a receptor on the cell surface. The binding stimulates second-messenger kinases to activate or inactivate transcription factors that further regulate gene expression. Many of the yeast intracellular signaling cascades have similar...
14.8K
01:27Diversity of Protists IV
118
Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...
118
01:27Diversity of Protists II
132
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
132
01:27Diversity of Protists III
124
Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
124
01:24Diversity of Archaea II
80
Archaea, one of the three domains of life, exhibit remarkable diversity and adaptability, thriving in both extreme and moderate environments. Historically, most identified archaea have been classified into two major phyla: Euryarchaeota and Crenarchaeota. However, recent molecular studies have expanded this classification to include three additional phyla: Thaumarchaeota, Nanoarchaeota, and Korarchaeota, each exhibiting unique characteristics and ecological roles.Thaumarchaeota: Mesophiles...
80
01:15Diversity of Protists I
117
Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
117