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Multicelularidad cloro-agregativa ajustada por la salinidad en un coanoflagelado

Núria Ros-Rocher¹, Josean Reyes-Rivera^2,3, Uzuki Horo⁴

¹Evolutionary Cell Biology and Evolution of Morphogenesis Unit, Institut Pasteur, Université Paris-Cité, CNRS UMR3691, Paris, France. nuria.ros@pasteur.fr.

|February 25, 2026

Resumen

El coanoflagelado Choanoeca flexa exhibe una multicelularidad flexible, formando colonias a través de mecanismos clonales, agregativos o combinados. Esta adaptabilidad ayuda a la supervivencia en entornos fluctuantes, desafiando la comprensión científica previa.

Área de la Ciencia:

Biología evolutiva
Biología celular
Evolución eucariota

Sus antecedentes:

La multicelularidad evolucionó independientemente en múltiples ocasiones en eucariotas.
Dos mecanismos principales para la multicelularidad son la clonalidad y la agregación.
Estos mecanismos se consideraban tradicionalmente mutuamente excluyentes.

Objetivo del estudio:

Investigar los mecanismos de multicelularidad en el coanoflagelado Choanoeca flexa.
Caracterizar el ciclo de vida y la adaptabilidad ambiental de C. flexa.
Desafiar las generalizaciones existentes sobre la multicelularidad de los coanoflagelados.

Principales métodos:

Observaciones de campo en hábitats naturales (charcos efímeros).
Caracterización del ciclo de vida y la formación de colonias de C. flexa.
Análisis de los mecanismos de multicelularidad clonal y agregativa.

Principales resultados:

Choanoeca flexa forma láminas celulares móviles y contráctiles a través de procesos clonales, agregativos o combinados.
C. flexa exhibe transiciones reversibles entre la unicelularidad y la multicelularidad.
El reconocimiento de parientes influye en la agregación, lo que limita las interacciones entre cepas.

Conclusiones:

La multicelularidad cloro-agregativa es una estrategia versátil para C. flexa en entornos variables.
Los hallazgos amplían el rango conocido de estrategias de multicelularidad en coanozoos.
El estudio desafía las suposiciones previas sobre la multicelularidad de los coanoflagelados.

Palabras clave:

coanoflagelado multicelularidad evolución salinidad biología celular biología evolutiva

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