A duo of fungi and complex and dynamic bacterial community networks contribute to shape the Ascophyllum nodosum holobiont.

ABSTRACT:

Background

The brown alga Ascophyllum nodosum and its microbiota form a dynamic functional entity named holobiont. Some microbial partners may play a role in seaweed health through bioactive compounds crucial for normal morphology, development, and physiological acclimation. However, the full spectrum of the microbial diversity and its variations according to algal life stage, season, and location have not been comprehensively studied. This study uses 208 short-read metabarcoding samples to characterize the bacterial, archaeal, and microeukaryotic communities of A. nodosum across three nearby sites, four thallus parts, and a monthly survey, aiming to explore the dynamics of ecological interactions within the holobiont.

Results

Our results revealed that A. nodosum harbors a p

SUBMITTER: Rousseau C 

PROVIDER: S-EPMC12801883 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature