Diversity of bacteria populations associated with different thallus regions of the brown alga Laminaria digitata.

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. Howev...

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Main Authors: Maureen W Ihua, Jamie A FitzGerald, Freddy Guihéneuf, Stephen A Jackson, Marcus J Claesson, Dagmar B Stengel, Alan D W Dobson
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2020-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0242675
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author Maureen W Ihua
Jamie A FitzGerald
Freddy Guihéneuf
Stephen A Jackson
Marcus J Claesson
Dagmar B Stengel
Alan D W Dobson
author_facet Maureen W Ihua
Jamie A FitzGerald
Freddy Guihéneuf
Stephen A Jackson
Marcus J Claesson
Dagmar B Stengel
Alan D W Dobson
author_sort Maureen W Ihua
collection DOAJ
description 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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spelling doaj.art-9ae9b2512f5645a6939dd4fb2b6e932f2022-12-21T19:14:53ZengPublic Library of Science (PLoS)PLoS ONE1932-62032020-01-011511e024267510.1371/journal.pone.0242675Diversity of bacteria populations associated with different thallus regions of the brown alga Laminaria digitata.Maureen W IhuaJamie A FitzGeraldFreddy GuihéneufStephen A JacksonMarcus J ClaessonDagmar B StengelAlan D W DobsonStipitate 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.https://doi.org/10.1371/journal.pone.0242675
spellingShingle Maureen W Ihua
Jamie A FitzGerald
Freddy Guihéneuf
Stephen A Jackson
Marcus J Claesson
Dagmar B Stengel
Alan D W Dobson
Diversity of bacteria populations associated with different thallus regions of the brown alga Laminaria digitata.
PLoS ONE
title Diversity of bacteria populations associated with different thallus regions of the brown alga Laminaria digitata.
title_full Diversity of bacteria populations associated with different thallus regions of the brown alga Laminaria digitata.
title_fullStr Diversity of bacteria populations associated with different thallus regions of the brown alga Laminaria digitata.
title_full_unstemmed Diversity of bacteria populations associated with different thallus regions of the brown alga Laminaria digitata.
title_short Diversity of bacteria populations associated with different thallus regions of the brown alga Laminaria digitata.
title_sort diversity of bacteria populations associated with different thallus regions of the brown alga laminaria digitata
url https://doi.org/10.1371/journal.pone.0242675
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