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

Type : ACL
Nature : Production scientifique
Au bénéfice du Laboratoire : Non
Statut de publication : Publié
Année de publication : 2020
Auteurs (7) : IHUA Maureen,w FITZGERALD Jamie,a GUIHÉNEUF Freddy JACKSON Stephen,a CLAESSON Marcus,j STENGEL Dagmar,b DOBSON Alan,d,w
Revue scientifique : Plos One
Volume : 15
Fascicule : 11
Pages :
DOI : 10.1371/journal.pone.0242675
URL : https://doi.org/10.1371/journal.pone.0242675
Abstract : 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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Citation :
Ihua MW, FitzGerald JA, Guihéneuf F, Jackson SA, Claesson MJ, Stengel DB, Dobson ADW (2020) Diversity of bacteria populations associated with different thallus regions of the brown alga Laminaria digitata. Plos One 15 | doi: 10.1371/journal.pone.0242675