Journal
PLOS ONE
Volume 15, Issue 11, Pages -Publisher
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0242675
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Funding
- European Commission [312184]
- Marine Biotechnology ERA/NET, NEPTUNA project [PBA/MB/15/02]
- SMI-BIO project [15/F/698]
- Science Foundation Ireland (SSPC-2) [12/RC/2275]
- Department of Agriculture, Food and the Marine (DAFM) SMI-BIO project [15/F/698]
- DAFM [FIRM 1/F009/MabS]
- Beaufort Marine Research Award
- Marine Institute under the Marine Research Sub-Programme of the National Development Plan 2007-2013
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Stipitate kelp species such as Laminaria digitata dominate most cold-water subtidal rocky shores and form underwater forests which are among the most productive coastal systems worldwide. Laminaria also sustains rich bacterial communities which offer a variety of biotechnological applications. However, to date, in-depth studies on the diversity and uniqueness of bacterial communities associated with this macroalgal species, their ecological role and their interactions with the alga are under-represented. To address this, the epibacterial populations associated with different thallus regions (holdfast, stipe, meristem, blade) of this brown seaweed were investigated using high-throughput Illumina sequencing of the 16S rRNA genes. The results show that epibacterial communities of the brown seaweed are significantly different and specific to the thallus region, with the shared bacterial population comprising of only 1.1% of the total amplicon sequence variants. The diverse holdfast and blade tissues formed distinct clusters while the meristem and stipe regions are more closely related. The data obtained further supports the hypothesis that macroalgal bacterial communities are shaped by morphological niches and display specificity.
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