Dataset Information

Hologenome analysis of two marine sponges with different microbiomes.

ABSTRACT: Sponges (Porifera) harbor distinct microbial consortia within their mesohyl interior. We herein analysed the hologenomes of Stylissa carteri and Xestospongia testudinaria, which notably differ in their microbiome content.Our analysis revealed that S. carteri has an expanded repertoire of immunological domains, specifically Scavenger Receptor Cysteine-Rich (SRCR)-like domains, compared to X. testudinaria. On the microbial side, metatranscriptome analyses revealed an overrepresentation of potential symbiosis-related domains in X. testudinaria.Our findings provide genomic insights into the molecular mechanisms underlying host-symbiont coevolution and may serve as a roadmap for future hologenome analyses.

SUBMITTER: Ryu T

PROVIDER: S-EPMC4772301 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Hologenome analysis of two marine sponges with different microbiomes.

Ryu Taewoo T Seridi Loqmane L Moitinho-Silva Lucas L Oates Matthew M Liew Yi Jin YJ Mavromatis Charalampos C Wang Xiaolei X Haywood Annika A Lafi Feras F FF Kupresanin Marija M Sougrat Rachid R Alzahrani Majed A MA Giles Emily E Ghosheh Yanal Y Schunter Celia C Baumgarten Sebastian S Berumen Michael L ML Gao Xin X Aranda Manuel M Foret Sylvain S Gough Julian J Voolstra Christian R CR Hentschel Ute U Ravasi Timothy T

BMC genomics 20160229

<h4>Background</h4>Sponges (Porifera) harbor distinct microbial consortia within their mesohyl interior. We herein analysed the hologenomes of Stylissa carteri and Xestospongia testudinaria, which notably differ in their microbiome content.<h4>Results</h4>Our analysis revealed that S. carteri has an expanded repertoire of immunological domains, specifically Scavenger Receptor Cysteine-Rich (SRCR)-like domains, compared to X. testudinaria. On the microbial side, metatranscriptome analyses reveale ...[more]

PMID: 26926518

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Project description:Sponges (Porifera) can host diverse and abundant communities of microbial symbionts that make crucial contributions to host metabolism. Although these communities are often host-specific and hypothesized to co-evolve with their hosts, correlations between host phylogeny and microbiome community structure are rarely tested. As part of the Earth Microbiome Project (EMP), we surveyed the microbiomes associated with 20 species of tropical marine sponges collected over a narrow geographic range. We tested whether (1) univariate metrics of microbiome diversity displayed significant phylogenetic signal across the host phylogeny; (2) host identity and host phylogeny were significant factors in multivariate analyses of taxonomic and phylogenetic dissimilarity; and (3) different minimum read thresholds impacted these results. We observed significant differences in univariate metrics of diversity among host species for all read thresholds, with strong phylogenetic signal in the inverse Simpson's index of diversity (D). We observed a surprisingly wide range of variability in community dissimilarity within host species (4-73%); this variability was not related to microbial abundance within a host species. Taxonomic and phylogenetic dissimilarity were significantly impacted by host identity and host phylogeny when these factors were considered individually; when tested together, the effect of host phylogeny was reduced, but remained significant. In our dataset, this outcome is largely due to closely related host sponges harboring distinct microbial taxa. Host identity maintained a strong statistical signal at all minimum read thresholds. Although the identity of specific microbial taxa varied substantially among host sponges, closely related hosts tended to harbor microbial communities with similar patterns of relative abundance. We hypothesize that microbiomes with low D might be structured by regulation of the microbial community by the host or by the presence of competitively dominant symbionts that are themselves under selection for host specificity.

Dataset Information

Hologenome analysis of two marine sponges with different microbiomes.

Publications

Hologenome analysis of two marine sponges with different microbiomes.

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