Seagrass biofilm communities at a naturally CO2 -rich vent

Environmental Microbiology Reports
Christiane HassenrückAlban Ramette

Abstract

Seagrass meadows are a crucial component of tropical marine reef ecosystems. Seagrass plants are colonized by a multitude of epiphytic organisms that contribute to broadening the ecological role of seagrasses. To better understand how environmental changes like ocean acidification might affect epiphytic assemblages, the microbial community composition of the epiphytic biofilm of Enhalus acroides was investigated at a natural CO2 vent in Papua New Guinea using molecular fingerprinting and next-generation sequencing of 16S and 18S rRNA genes. Both bacterial and eukaryotic epiphytes formed distinct communities at the CO2 -impacted site compared with the control site. This site-related CO2 effect was also visible in the succession pattern of microbial epiphytes. We further found an increased relative sequence abundance of bacterial types associated with coral diseases at the CO2 -impacted site (Fusobacteria, Thalassomonas), whereas eukaryotes such as certain crustose coralline algae commonly related to healthy reefs were less diverse. These trends in the epiphytic community of E. acroides suggest a potential role of seagrasses as vectors of coral pathogens and may support previous predictions of a decrease in reef health and preval...Continue Reading

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Citations

Jun 2, 2017·PloS One·Erinn M MullerKim B Ritchie
Feb 15, 2018·Science Advances·Massimiliano MolariAntje Boetius
Jul 29, 2017·Frontiers in Microbiology·Mia M BengtssonIrmgard Blindow
Mar 19, 2020·Marine Biotechnology·Dorsaf KerfahiJason M Hall-Spencer
Oct 17, 2020·The Journal of Eukaryotic Microbiology·Bianca Trevizan SegoviaLaura Wegener Parfrey

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Datasets Mentioned

BETA
PRJEB7181
KC918186
JQ178640
NR043066
NR074719

Methods Mentioned

BETA
light microscopy
amplicon
Illumina
454 sequencing
amplicon sequencing
454
Illumina sequencing

Software Mentioned

SILVAngs
ARISA

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