Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Frequency-dependent Selection01:21

Frequency-dependent Selection

20.2K
When the fitness of a trait is influenced by how common it is (i.e., its frequency) relative to different traits within a population, this is referred to as frequency-dependent selection. Frequency-dependent selection may occur between species or within a single species. This type of selection can either be positive—with more common phenotypes having higher fitness—or negative, with rarer phenotypes conferring increased fitness.
20.2K
Deindividuation00:57

Deindividuation

22.4K
Deindividuation is a form of social influence on an individual’s behavior such that the individual engages in unusual or non-normal behavior while in a group setting. Why? Because in these group settings, the individual no longer sees themselves as an individual anymore, disinhibiting their behavior and personal restraint.
22.4K
Coordination of Gene Expression Processes in Bacteria01:29

Coordination of Gene Expression Processes in Bacteria

1.1K
The DNA replication, transcription, and translation processes are intricately coupled in bacteria, allowing efficient gene expression and rapid protein synthesis. While this physical and functional coordination is advantageous, it introduces challenges that bacteria overcome through specific regulatory mechanisms.Coupling of Replication, Transcription, and TranslationThe coupling of replication, transcription, and translation is a hallmark of bacterial gene expression. As the replisome unwinds...
1.1K
Evolution of New Traits in Microbes01:24

Evolution of New Traits in Microbes

201
Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
201
Microbial Interactions: Cooperation01:26

Microbial Interactions: Cooperation

63
Microbial cooperation involves beneficial interactions in which different species work together for individual or mutual advantage. These interactions can profoundly influence ecological dynamics and evolutionary processes, and they are essential to many pathogenic and symbiotic relationships.Nematode–Bacteria CooperationA striking example is the relationship between the Gram-negative bacterium Xenorhabdus nematophila and the parasitic nematode Steinernema carpocapsae. Juvenile nematodes...
63
Microbial Interactions: Competition01:26

Microbial Interactions: Competition

94
Microbial competition is an ecological interaction in which microorganisms vie for limited resources within shared environments. These resources may include nutrients, space, or light, depending on the system. The intensity and outcome of competition are influenced by the environmental context, such as nutrient availability, spatial constraints, and the diversity of microbial species present. These competitive interactions significantly influence the structure, function, and resilience of...
94

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Metabolic feedbacks drive population dynamics and can lead to oscillations among leaf bacteria.

Nature communications·2026
Same author

Phage-mediated lysis increases growth rate of surviving bacterial cells.

iScience·2026
Same author

Limits to the evolution of metabolic dependency in spatially structured microbial communities.

iScience·2026
Same author

Ornithine lipids from <i>Akkermansia muciniphila</i> are dynamically modulated in colitis and shape macrophage inflammatory responses.

Gut microbes·2025
Same author

Colibactin-producing <i>E. coli</i> promote carcinogenesis of gastroesophageal adenocarcinoma and simultaneously induce autophagy and differentiation.

bioRxiv : the preprint server for biology·2025
Same author

Comparison of Different Sites of Microbiota Shows Increased Pseudomonas Species in the Gut Mucosa in Inflammatory Bowel Disease.

Inflammatory bowel diseases·2025

Video Experimental Relacionado

Updated: May 5, 2026

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations
07:40

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations

Published on: October 29, 2016

13.2K

La cooperación autodestructiva mediada por el ruido fenotípico.

Martin Ackermann1, Bärbel Stecher, Nikki E Freed

  • 1Institute of Integrative Biology, ETH Zurich, 8092 Zürich, Switzerland. martin.ackermann@env.ethz.ch

Nature
|August 23, 2008
PubMed
Resumen

El ruido fenotípico permite que las células cooperativas evolucionen, incluso cuando la cooperación es autodestructiva. Esto ocurre cuando las células con mayor probabilidad de autodestrucción acceden a más recursos, como se ve en las infecciones bacterianas.

Más Videos Relacionados

A Deep-sequencing-assisted, Spontaneous Suppressor Screen in the Fission Yeast Schizosaccharomyces pombe
07:55

A Deep-sequencing-assisted, Spontaneous Suppressor Screen in the Fission Yeast Schizosaccharomyces pombe

Published on: March 7, 2019

8.4K
Time-lapse Imaging of Bacterial Swarms and the Collective Stress Response
06:26

Time-lapse Imaging of Bacterial Swarms and the Collective Stress Response

Published on: May 23, 2020

7.7K

Videos de Experimentos Relacionados

Last Updated: May 5, 2026

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations
07:40

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations

Published on: October 29, 2016

13.2K
A Deep-sequencing-assisted, Spontaneous Suppressor Screen in the Fission Yeast Schizosaccharomyces pombe
07:55

A Deep-sequencing-assisted, Spontaneous Suppressor Screen in the Fission Yeast Schizosaccharomyces pombe

Published on: March 7, 2019

8.4K
Time-lapse Imaging of Bacterial Swarms and the Collective Stress Response
06:26

Time-lapse Imaging of Bacterial Swarms and the Collective Stress Response

Published on: May 23, 2020

7.7K

Área de la Ciencia:

  • Biología evolutiva Biología evolutiva.
  • Microbiología Microbiología.
  • Genética La genética.

Sus antecedentes:

  • La cooperación en los sistemas biológicos a menudo presenta un desafío, especialmente cuando la cooperación es autodestructiva.
  • La cooperación autodestructiva, donde los individuos perecen mientras ayudan a otros, requiere mecanismos de mantenimiento genético.
  • El ruido fenotípico es un mecanismo potencial para diferenciar poblaciones en cooperación autodestructiva.

Objetivo del estudio:

  • Investigar la evolución de la cooperación autodestructiva mediada por el ruido fenotípico.
  • Explorar el papel del surtido en la evolución de la cooperación.
  • Examinar la relevancia de este modelo para la patogénesis bacteriana.

Principales métodos:

  • Modelado teórico de la cooperación bajo el ruido fenotípico y el surtido.
  • Validación experimental mediante el uso de Salmonella typhimurium.

Principales resultados:

  • La expresión ruidosa de la cooperación autodestructiva puede evolucionar cuando los individuos con mayor probabilidad de autodestrucción obtienen un mayor acceso a los bienes públicos (variedad).
  • La variedad puede surgir en entornos estructurados espacialmente.
  • El ruido fenotípico puede promover subpoblaciones cooperativas que facilitan la infección.

Conclusiones:

  • Las acciones cooperativas autodestructivas expresadas ruidosamente pueden evolucionar bajo condiciones de variedad.
  • La cooperación autodestructiva es una función biológica plausible del ruido fenotípico.
  • La cooperación autodestructiva fenotípica mediada por el ruido puede desempeñar un papel importante en la patogénesis bacteriana.