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La coexistencia bacteriana impulsada por la motilidad y la competencia espacial

Sebastian Gude1, Erçağ Pinçe1,2, Katja M Taute1,2

  • 1AMOLF, Amsterdam, The Netherlands.

Nature
|February 21, 2020
PubMed
Resumen
Este resumen es generado por máquina.

Las diferencias de motilidad bacteriana impulsan la diversidad al causar inversiones jerárquicas competitivas. Una población que se mueve más rápido o que crece más rápido puede superar a la otra, promoviendo la convivencia a través de la segregación espacial.

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Área de la Ciencia:

  • Ecología microbiana
  • Biología evolutiva
  • Investigación del microbioma

Sus antecedentes:

  • La diversidad bacteriana es crucial para las funciones ecológicas y del microbioma.
  • Las estrategias de coexistencia incluyen la especialización metabólica, la cooperación y la guerra.
  • La motilidad bacteriana está bien estudiada, pero su papel en la coexistencia no se ha explorado.

Objetivo del estudio:

  • Investigar experimentalmente el papel de la motilidad bacteriana en la coexistencia de la población.
  • Comprender cómo las diferencias de motilidad influyen en las jerarquías competitivas en los parches de nutrientes.

Principales métodos:

  • Estudió poblaciones mixtas de bacterias que colonizan parches de nutrientes.
  • Resultados competitivos analizados basados en la abundancia relativa, el crecimiento y la motilidad.
  • Segregación espacial observada y su dependencia de las compensaciones crecimiento-migración.

Principales resultados:

  • Las jerarquías competitivas se invirtieron: las poblaciones más pequeñas superaron a las más grandes.
  • La segregación activa y la exclusión espacial impulsadas por diferencias de motilidad.
  • Las compensaciones de motilidad con el crecimiento son suficientes para promover la diversidad bacteriana.

Conclusiones:

  • La motilidad bacteriana juega un papel clave en la promoción de la diversidad y la coexistencia.
  • Las diferencias de movilidad conducen a la formación de nichos y estrategias colectivas.
  • Los hallazgos se extienden más allá de la supervivencia individual a las dinámicas colectivas de expulsión y contención.