Jove
Visualize
Contáctanos

Videos de Conceptos Relacionados

Channel Rhodopsins01:11

Channel Rhodopsins

3.1K
Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...
3.1K
Green Algae01:21

Green Algae

674
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
674
Overview of Algae01:28

Overview of Algae

658
The kingdom Archaeplastida encompasses red and green algae, along with land plants. Unlike other protists with chloroplasts that arose through secondary endosymbiosis, only red and green algae originated from primary endosymbiotic events. This diverse group of eukaryotic organisms contains chlorophyll and performs oxygenic photosynthesis.Algae exist in various forms, from large brown kelp in coastal waters to green scum in puddles and stains on rocks or soil. Some species are responsible for...
658
Other Algae01:19

Other Algae

370
The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
370
Red Algae01:23

Red Algae

705
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
705

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Algal optics.

Physical review. E·2026
Same author

From biting to engulfment: curvature-actin coupling controls phagocytosis of soft, deformable targets.

bioRxiv : the preprint server for biology·2026
Same author

From biting to engulfment: curvature-actin coupling controls phagocytosis of soft, deformable targets.

ArXiv·2026
Same author

Modelling chemotaxis of branched cells in complex environments provides insights into immune cell navigation.

PLoS computational biology·2026
Same author

Trade-off between branching and polarity controls decision-making during cell migration.

Science advances·2026
Same author

Pure Hydrodynamic Instabilities in Active Jets of Puller Microalgae.

Physical review letters·2025
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
Ver todos los artículos relacionados
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

Video Experimental Relacionado

Updated: Jan 8, 2026

Operation of Laboratory Photobioreactors with Online Growth Measurements and Customizable Light Regimes
05:21

Operation of Laboratory Photobioreactors with Online Growth Measurements and Customizable Light Regimes

Published on: October 28, 2021

2.6K

Toma de decisiones fototáctica por microalgas

Shantanu Raikwar1, Adham Al-Kassem1, Nir S Gov2,3

  • 1Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris Cité, F-75005 Paris, France.

Physical review letters
|December 12, 2025
PubMed
Resumen
Este resumen es generado por máquina.

Las algas Chlamydomonas reinhardtii navegan por estímulos de luz competitivos utilizando un promedio ponderado por intensidad de las direcciones de la luz. Esta estrategia minimiza la exposición a la luz y surge de la variada ubicación de los fotorreceptores dentro de la población celular.

Palabras clave:
fototaxisChlamydomonas reinhardtiimicroalgastoma de decisionesbiología celularbiofísica

Más Videos Relacionados

Observation of Photobehavior in Chlamydomonas reinhardtii
03:54

Observation of Photobehavior in Chlamydomonas reinhardtii

Published on: May 6, 2022

4.5K
Construction and Setup of a Bench-scale Algal Photosynthetic Bioreactor with Temperature, Light, and pH Monitoring for Kinetic Growth Tests
10:08

Construction and Setup of a Bench-scale Algal Photosynthetic Bioreactor with Temperature, Light, and pH Monitoring for Kinetic Growth Tests

Published on: June 14, 2017

17.3K

Videos de Experimentos Relacionados

Last Updated: Jan 8, 2026

Operation of Laboratory Photobioreactors with Online Growth Measurements and Customizable Light Regimes
05:21

Operation of Laboratory Photobioreactors with Online Growth Measurements and Customizable Light Regimes

Published on: October 28, 2021

2.6K
Observation of Photobehavior in Chlamydomonas reinhardtii
03:54

Observation of Photobehavior in Chlamydomonas reinhardtii

Published on: May 6, 2022

4.5K
Construction and Setup of a Bench-scale Algal Photosynthetic Bioreactor with Temperature, Light, and pH Monitoring for Kinetic Growth Tests
10:08

Construction and Setup of a Bench-scale Algal Photosynthetic Bioreactor with Temperature, Light, and pH Monitoring for Kinetic Growth Tests

Published on: June 14, 2017

17.3K

Área de la Ciencia:

  • Biología celular
  • Biofísica
  • Microbiología

Sus antecedentes:

  • Las algas unicelulares como Chlamydomonas reinhardtii exhiben fototaxis, moviéndose hacia o lejos de las fuentes de luz.
  • Comprender la toma de decisiones en respuesta a estímulos competitivos es crucial para organismos simples.

Objetivo del estudio:

  • Investigar cómo Chlamydomonas reinhardtii responde a múltiples fuentes de luz con diferentes intensidades y ángulos.
  • Elucidar los mecanismos subyacentes y las estrategias adaptativas que rigen la fototaxis en entornos de luz competitivos.

Principales métodos:

  • Observación experimental del comportamiento de Chlamydomonas reinhardtii bajo iluminación de doble haz.
  • Desarrollo de un modelo matemático para describir la navegación celular basada en la intensidad y dirección de la luz.

Principales resultados:

  • Las células exhiben fototaxis siguiendo un promedio ponderado por intensidad de los vectores de propagación de la luz cuando se enfrentan a dos haces.
  • Este comportamiento se alinea con un modelo adaptativo que minimiza la intensidad promedio de la luz en el polo anterior de la célula.
  • En separaciones angulares grandes, las poblaciones celulares se dividen, y algunas células exhiben cambios estocásticos entre diferentes direcciones de natación.

Conclusiones:

  • La respuesta fototáctica observada es una ley determinada geométricamente, que representa una estrategia adaptativa para la evitación de la luz.
  • Las variaciones a nivel de población en la distribución de fotorreceptores explican la diversidad conductual observada y la ruptura de la simetría frente-atrás.