Stable and Enriched Cenarchaeum symbiosum and Uncultured Betaproteobacteria HF1 in the Microbiome of the Mediterranean Sponge Haliclona fulva (Demospongiae: Haplosclerida)

Microbial Ecology
Erika García-BonillaHoward Junca

Abstract

Sponges harbor characteristic microbiomes derived from symbiotic relationships shaping their lifestyle and survival. Haliclona fulva is encrusting marine sponge species dwelling in coralligenous accretions or semidark caves of the Mediterranean Sea and the near Atlantic Ocean. In this work, we characterized the abundance and core microbial community composition found in specimens of H. fulva by means of electron microscopy and 16S amplicon Illumina sequencing. We provide evidence of its low microbial abundance (LMA) nature. We found that the H. fulva core microbiome is dominated by sequences belonging to the orders Nitrosomonadales and Cenarchaeales. Seventy percent of the reads assigned to these phylotypes grouped in a very small number of high-frequency operational taxonomic units, representing niche-specific species Cenarchaeum symbiosum and uncultured Betaproteobacteria HF1, a new eubacterial ribotype variant found in H. fulva. The microbial composition of H. fulva is quite distinct from those reported in sponge species of the same Haliclona genus. We also detected evidence of an excretion/capturing loop between these abundant microorganisms and planktonic microbes by analyzing shifts in seawater planktonic microbial conten...Continue Reading

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Citations

Mar 17, 2020·FEMS Microbiology Ecology·César RuizThierry Pérez
Oct 14, 2020·Environmental Microbiology Reports·Bruno Francesco Rodrigues de OliveiraMarinella Silva Laport
Feb 2, 2021·Frontiers in Microbiology·Edward F DeLong
Jul 6, 2021·Saudi Journal of Biological Sciences·Jasmin ChekidhenkuzhiyilShanta Nair

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Datasets Mentioned

BETA
KY270508-KY270557
SRP126506

Methods Mentioned

BETA
Illumina sequencing
electron microscopy

Software Mentioned

MEGA6 ( Molecular Evolutionary Genetics Analysis )
UniFrac
ADONIS
MEGA6
UCLUST
Usearch
ANOSIM
phyloseq package
MUSCLE
QIIME

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