Journal
JOURNAL OF APPLIED PHYCOLOGY
Volume 31, Issue 2, Pages 867-883Publisher
SPRINGER
DOI: 10.1007/s10811-018-1573-4
Keywords
Secondary metabolites; Biofilms; Microbial ecology; Biological activity; Chemical interaction
Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (Capes)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)
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Macroalgae play a crucial role in marine ecosystems when they contribute to the global primary production in the habitats formation, providing food and shelter to a range of aquatic organisms. They have a number of interactions with bacteria and other organisms such as fouling and disease. To inhibit the settling, growing, and biofilm formation by bacteria, it has been suggested that the macroalgae influence bacterial metabolism and quorum sensing through the production of secondary metabolites with antibiotic effect. Macroalgae-bacteria interactions have been investigated for many years. These interactions can be beneficial when the bacteria assist with the normal development of macroalgae as well as reducing secondary fouling on the algal surface. On the other hand, the interactions may have a deleterious effect when the biofilm impairs the photosynthetic ability or promotes disease development. This review reports the recent advances in the understanding of bacteria-brown algae interactions, highlighting the diversity and functional role of epiphytic bacteria, including the maintenance of the health of the algae and the biological activities described from this association. Through combined bacterial culture, microscopy, and molecular biology, it has been possible to identify and establish the phylogenetic origin of different bacterial communities associated with brown algae, being predominantly the phyla Proteobacteria, Bacteroidetes, and Firmicutes. Further investigation of the bacterial communities that live on different macroalgae using new technologies are still required, mainly to evaluate the production and secretions of metabolites with biotechnological potential.
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