The Saccharina latissima microbiome: Effects of region, season, and physiology

Burgunter-Delamare, Bertille; Rousvoal, Sylvie; Legeay, Erwan; Tanguy, Gwenn; Fredriksen, Stein; Boyen, Catherine; Dittami, Simon M.

doi:10.3389/fmicb.2022.1050939

Cited by 13 publications

(21 citation statements)

References 89 publications

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“…Bacteria also colonize marine macroalgae, and these bacterial communities are not fixed and can change temporally and spatially across seasons, lifespans, life stages, and tissue types, and are shaped by biotic and abiotic factors [ 25 , 183 , 184 ]. The following section describes three macroalgal models: the red, green, and brown algae.…”

Section: Marine Macroalgaementioning

confidence: 99%

Exchange or Eliminate: The Secrets of Algal-Bacterial Relationships

Burgunter-Delamare,

Shetty,

Vuong

et al. 2024

Plants

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Algae and bacteria have co-occurred and coevolved in common habitats for hundreds of millions of years, fostering specific associations and interactions such as mutualism or antagonism. These interactions are shaped through exchanges of primary and secondary metabolites provided by one of the partners. Metabolites, such as N-sources or vitamins, can be beneficial to the partner and they may be assimilated through chemotaxis towards the partner producing these metabolites. Other metabolites, especially many natural products synthesized by bacteria, can act as toxins and damage or kill the partner. For instance, the green microalga Chlamydomonas reinhardtii establishes a mutualistic partnership with a Methylobacterium, in stark contrast to its antagonistic relationship with the toxin producing Pseudomonas protegens. In other cases, as with a coccolithophore haptophyte alga and a Phaeobacter bacterium, the same alga and bacterium can even be subject to both processes, depending on the secreted bacterial and algal metabolites. Some bacteria also influence algal morphology by producing specific metabolites and micronutrients, as is observed in some macroalgae. This review focuses on algal-bacterial interactions with micro- and macroalgal models from marine, freshwater, and terrestrial environments and summarizes the advances in the field. It also highlights the effects of temperature on these interactions as it is presently known.

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Section: Marine Macroalgaementioning

confidence: 99%

Exchange or Eliminate: The Secrets of Algal-Bacterial Relationships

Burgunter-Delamare,

Shetty,

Vuong

et al. 2024

Plants

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“…Seaweed-associated microbiota have been studied from various scientific perspectives and has revealed dynamic interactions between symbionts and hosts. The bacterial composition of seaweed microbiota has been shown to vary in terms of diversity and abundance, according to host species [74][75][76], and even within the same species depending on host tissue type, age, health, and host morphology [76][77][78][79][80][81][82][83][84][85][86]. Furthermore, the environment plays a crucial role in microbial composition and dynamics.…”

Section: Seaweed and Their Microbiota A Complex Holobiontmentioning

confidence: 99%

A review on the chemical ecology of the Fucaceae holobionts: from fundamental knowledge to applications

Rousseau,

Demoulinger,

Rousvoal

et al. 2024

Comptes Rendus. Chimie

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In recent years, the use of brown seaweeds (Phaeophyceae) and especially Fucaceae, has increased for a variety of applications including food additives, nutraceuticals, cosmetics, and agriculture, mainly because most edible brown algae contain valuable bioactive compounds. However, the growing demand for some species, such as Ascophyllum nodosum, has become a major concern due to the risk of overharvesting. Along with this increasing demand, there is growing awareness of the intricate interactions between algal hosts and their microbiota. The Fucaceae are of particular interest in this regard, as several species exhibit specificity with regard to their associated endophytic fungi. Many of these associated microbes produce a wide range of bioactive compounds themselves and may contribute to well-known properties previously attributed to the host. For some compounds, an alternative to wild harvesting could be the production of molecules of interest by organic synthesis or by biotechnological production, e.g., in microbial cell factories incorporating selected members of the algal microbiota. This requires in-depth knowledge of the alga and its microbiota to recognize the origin and the synthesis pathways of these bioactive compounds. This review presents the current understanding of the Fucaceae and their associated microbiota as sources of chemical compounds intended for diverse applications.

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“…Planctomycetota is noteworthy for producing sulfatases, which can degrade sulfated polysaccharides called fucoidans, a major component of the kelp cell wall [32][33][34]. In addition, Planctomycetes are commonly found at the apex of algal tissues and are known to be involved in the degradation of older tissues [35]. The higher abundance of Planctomycetota in the Rongcheng region might be connected to the degradation of kelp tissue in the aquaculture farms in Rongcheng.…”

Section: Taxonomical Differences Of Seawater Microbial Communities Be...mentioning

confidence: 99%

Comparative Metagenomic Analysis of Marine eDNA Investigating the Production Crisis of Aquacultured Saccharina japonica

Choi,

Yang,

Choi

et al. 2024

Diversity

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Aquaculture farms cultivating Saccharina japonica are highly active in Wando, Korea, and Rongcheng, China. However, the yield of S. japonica significantly declined in the Rongcheng region in 2022 compared to previous records, whereas that in Wando remained at a normal level, presumably due to the presence of a pathogenic microbiome. We used environmental DNA (eDNA) metagenomic analysis to compare the microbial compositions of seawater from aquaculture farms in Wando and Rongcheng. Seawater samples were collected from one Korean site in Wando (WA) and two Chinese sites in Ailian Bay (AB) and Lidao Bay (LB). Metagenomic analysis focusing on the microbial 16S rRNA identified 38 phyla and 58 families of microbiomes in all regions. Potentially pathogenic bacterial groups associated with S. japonica in AB and LB were more abundant than in WA, suggesting their potential influence on mortality and the decline in the harvest yield of S. japonica. The microbial composition of WA was distinguished from those of the other two sites, which clustered together with higher similarity. Since the S. japonica aquaculture industry is important for both countries, this comparative eDNA monitoring is a valuable initiation towards the next step of problem-solving practices in coastal management in these two aquaculture systems.

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The Saccharina latissima microbiome: Effects of region, season, and physiology

Cited by 13 publications

References 89 publications

Exchange or Eliminate: The Secrets of Algal-Bacterial Relationships

Exchange or Eliminate: The Secrets of Algal-Bacterial Relationships

A review on the chemical ecology of the Fucaceae holobionts: from fundamental knowledge to applications

Comparative Metagenomic Analysis of Marine eDNA Investigating the Production Crisis of Aquacultured Saccharina japonica

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