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<p>The bacterial microbiota plays an essential role in the protection, adaptation, and resilience of the holobiont <i>Leptogorgia alba</i>, an azooxanthellate octocoral that can inhabit shallow and deep zones of the Tropical Pacific Ocean, suggesting potential and successful coral-microbiome interactions. This study aimed to characterize and evaluate the seasonal variation of bacterial assemblages associated with <i>L. alba</i>, sediment, and seawater in Bahía de Chamela. The bacterial 16&#xa0;S rRNA gene was amplified, and PCR amplicons sequencing was performed on an Ion Torrent PGM. Specific taxa for each substrate represented the bacterial assemblage structure. Mycoplasmataceae abundance predominated in <i>L. alba</i>, Nostocaceae in the sediment, and Prochlorococcaceae in the seawater. No changes in the bacterial assemblage composition were found between the climatic seasons evaluated. Dissimilarity was evident in the bacterial composition and abundance at the substrate level, as well as the persistence of the main groups in the climatic seasons. The bacterial specificity associated with <i>L. alba</i> in Bahía de Chamela, could be the primary regulators of the bacterial assemblage structure. Our results offer a preliminary insight of the most abundant and representative taxa of the <i>L. alba</i>-associated bacterial assemblage.</p>

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Screening of bacterial assemblages associated with Leptogorgia alba, sediment, and seawater of the central Mexican Pacific

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • Elizabeth Avila-Castro,
  • Leopoldo Díaz-Pérez,
  • Fabián A. Rodríguez-Zaragoza,
  • Joicye Hernández-Zulueta,
  • María del Pilar Zamora-Tavares,
  • Gabriela Alcalá-Gómez,
  • Aramis Olivos-Ortiz,
  • Ofelia Vargas-Ponce

摘要

The bacterial microbiota plays an essential role in the protection, adaptation, and resilience of the holobiont Leptogorgia alba, an azooxanthellate octocoral that can inhabit shallow and deep zones of the Tropical Pacific Ocean, suggesting potential and successful coral-microbiome interactions. This study aimed to characterize and evaluate the seasonal variation of bacterial assemblages associated with L. alba, sediment, and seawater in Bahía de Chamela. The bacterial 16 S rRNA gene was amplified, and PCR amplicons sequencing was performed on an Ion Torrent PGM. Specific taxa for each substrate represented the bacterial assemblage structure. Mycoplasmataceae abundance predominated in L. alba, Nostocaceae in the sediment, and Prochlorococcaceae in the seawater. No changes in the bacterial assemblage composition were found between the climatic seasons evaluated. Dissimilarity was evident in the bacterial composition and abundance at the substrate level, as well as the persistence of the main groups in the climatic seasons. The bacterial specificity associated with L. alba in Bahía de Chamela, could be the primary regulators of the bacterial assemblage structure. Our results offer a preliminary insight of the most abundant and representative taxa of the L. alba-associated bacterial assemblage.