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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...
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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...
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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,...
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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...
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Protists are diverse eukaryotic microorganisms that lack the specialized tissues of plants and animals and the chitinous cell walls of fungi. Their early divergence within Eukarya resulted in structural, functional, and ecological diversity. They are classified into supergroups such as Archaeplastida, Excavata, Amoebozoa, Rhizaria, Alveolata, and Stramenopiles, determined through genetic analysis and structural similarities.Structural and Functional AdaptationsProtists have various adaptations...
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The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
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Updated: Sep 9, 2025

Establishment of Microbial Eukaryotic Enrichment Cultures from a Chemically Stratified Antarctic Lake and Assessment of Carbon Fixation Potential
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Hacia un marco basado en rasgos para la ecología y la evolución de los protistas

Mahwash Jamy1, Pierre Ramond2, David Bass3

  • 1Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden.

Trends in microbiology
|September 4, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Un enfoque basado en rasgos es crucial para comprender la diversidad funcional de los protistas. El desarrollo de una base de datos de rasgos de protistas avanzará en la investigación de la ecología y la evolución de los protistas.

Palabras clave:
El funcionamiento del ecosistemaecología funcionalBiodiversidad de los protistasBase de datos de rasgos

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Área de la Ciencia:

  • Ecología
  • Biología evolutiva
  • Microbiología

Sus antecedentes:

  • Los protistas representan la mayoría de la diversidad genética y funcional de los eucariotas.
  • La secuenciación ambiental revela una gran abundancia y diversidad de protistas poco estudiadas.
  • Los protistas juegan un papel crítico como productores primarios / secundarios con diversas especializaciones ecológicas.

Objetivo del estudio:

  • Abogar por un enfoque basado en rasgos para estudiar la diversidad de los protistas.
  • Resaltar la necesidad de una base de datos completa de rasgos protistas.
  • Abordar las lagunas de conocimiento en la comprensión de las funciones funcionales de los protistas.

Principales métodos:

  • Revise los enfoques genómicos y transcriptómicos actuales para el estudio de los protistas.
  • Integrar ejemplos de trabajos recientes sobre la diversidad funcional de los protistas.
  • Proponer estrategias para desarrollar una base de datos de rasgos.

Principales resultados:

  • Los datos genómicos / transcriptómicos por sí solos son insuficientes para capturar los rasgos morfológicos y conductuales de los protistas.
  • Un marco basado en rasgos es esencial para comprender las funciones funcionales de los protistas.
  • Las bases de datos de rasgos ofrecen oportunidades significativas para la investigación ecológica y evolutiva.

Conclusiones:

  • Un marco basado en rasgos es vital para el avance de la ecología protista y la investigación de la evolución.
  • El desarrollo de una base de datos de rasgos protistas facilitará la respuesta a preguntas ecológicas clave.
  • La investigación futura debe priorizar la integración de datos de rasgos para una comprensión holística de los protistas.