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Bacterial influences on the culture and bioactive natural products of the red seaweed Asparagopsis taxiformis
Dissertation   Open access

Bacterial influences on the culture and bioactive natural products of the red seaweed Asparagopsis taxiformis

Silvia Blanco Gonzalez
University of the Sunshine Coast, Queensland
Doctor of Philosophy, University of the Sunshine Coast, Queensland
2025
DOI:
https://doi.org/10.25907/00963
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Abstract

Aquaculture Agricultural biotechnology Asparagopsis seaweed bacteria alogenated compound gentamicin bromoform tribromoacetic acid probiotic methane biotechnology aquaculture
Asparagopsis taxiformis has emerged as a natural feed additive for mitigating enteric methane through its halogenated metabolites, most notably bromoform. However, wide variability in bromoform content impedes reliable, large-scale cultivation to serve the 1.5 billion cattle in the world. Although >100 halogenated compounds have been identified in the genus, quantitative data on their interrelationships and the influence of surface-associated bacteria remain scarce. This thesis fills those gaps by examining how bacterial communities modulate growth rates and halogenated compounds profiles in cultured A. taxiformis. Across four chapters of bacterial manipulations and a metaanalysis, it develops a bacteria-driven enhancement of seaweed production and halogenated compounds.

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