Disentangling the Influence of Environment, Host Specificity and Thallus Differentiation on Bacterial Communities in Siphonous Green Seaweeds
Siphonous green seaweeds, such as Caulerpa, are among the most morphologically complex algae with differentiated algal structures (morphological niches). Caulerpa is also host to a rich diversity of bacterial endo- and epibionts. The degree to which these bacterial communities are species-, or even...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-04-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fmicb.2019.00717/full |
| _version_ | 1828155495104380928 |
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| author | Kathryn Lee Morrissey Levent Çavaş Anne Willems Olivier De Clerck |
| author_facet | Kathryn Lee Morrissey Levent Çavaş Anne Willems Olivier De Clerck |
| author_sort | Kathryn Lee Morrissey |
| collection | DOAJ |
| description | Siphonous green seaweeds, such as Caulerpa, are among the most morphologically complex algae with differentiated algal structures (morphological niches). Caulerpa is also host to a rich diversity of bacterial endo- and epibionts. The degree to which these bacterial communities are species-, or even niche-specific remains largely unknown. To address this, we investigated the diversity of bacteria associated to different morphological niches of both native and invasive species of Caulerpa from different geographic locations along the Turkish coastline of the Aegean sea. Associated bacteria were identified using the 16S rDNA marker gene for three morphological niches, such as the endobiome, epibiome, and rhizobiome. Bacterial community structure was explored and deterministic factors behind bacterial variation were investigated. Of the total variation, only 21.5% could be explained. Pronounced differences in bacterial community composition were observed and variation was partly explained by a combination of host species, biogeography and nutrient levels. The majority of the explained bacterial variation within the algal holobiont was attributed to the micro-environments established by distinct morphological niches. This study further supports the hypothesis that the bacterial assembly is largely stochastic in nature and bacterial community structure is most likely linked to functional genes rather than taxonomy. |
| first_indexed | 2024-04-11T22:54:47Z |
| format | Article |
| id | doaj.art-c3eeed84c84142b78d0ff0ea67338fb3 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-04-11T22:54:47Z |
| publishDate | 2019-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-c3eeed84c84142b78d0ff0ea67338fb32022-12-22T03:58:29ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2019-04-011010.3389/fmicb.2019.00717430856Disentangling the Influence of Environment, Host Specificity and Thallus Differentiation on Bacterial Communities in Siphonous Green SeaweedsKathryn Lee Morrissey0Levent Çavaş1Anne Willems2Olivier De Clerck3Department of Biology, Phycology Research Group, Ghent University, Ghent, BelgiumDepartment of Chemistry, Biochemistry Division, Faculty of Science, Dokuz Eylül University, İzmir, TurkeyLaboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, Ghent, BelgiumDepartment of Biology, Phycology Research Group, Ghent University, Ghent, BelgiumSiphonous green seaweeds, such as Caulerpa, are among the most morphologically complex algae with differentiated algal structures (morphological niches). Caulerpa is also host to a rich diversity of bacterial endo- and epibionts. The degree to which these bacterial communities are species-, or even niche-specific remains largely unknown. To address this, we investigated the diversity of bacteria associated to different morphological niches of both native and invasive species of Caulerpa from different geographic locations along the Turkish coastline of the Aegean sea. Associated bacteria were identified using the 16S rDNA marker gene for three morphological niches, such as the endobiome, epibiome, and rhizobiome. Bacterial community structure was explored and deterministic factors behind bacterial variation were investigated. Of the total variation, only 21.5% could be explained. Pronounced differences in bacterial community composition were observed and variation was partly explained by a combination of host species, biogeography and nutrient levels. The majority of the explained bacterial variation within the algal holobiont was attributed to the micro-environments established by distinct morphological niches. This study further supports the hypothesis that the bacterial assembly is largely stochastic in nature and bacterial community structure is most likely linked to functional genes rather than taxonomy.https://www.frontiersin.org/article/10.3389/fmicb.2019.00717/fullCaulerpamicrobiomebacterial variationhost specificitymorphological niche |
| spellingShingle | Kathryn Lee Morrissey Levent Çavaş Anne Willems Olivier De Clerck Disentangling the Influence of Environment, Host Specificity and Thallus Differentiation on Bacterial Communities in Siphonous Green Seaweeds Frontiers in Microbiology Caulerpa microbiome bacterial variation host specificity morphological niche |
| title | Disentangling the Influence of Environment, Host Specificity and Thallus Differentiation on Bacterial Communities in Siphonous Green Seaweeds |
| title_full | Disentangling the Influence of Environment, Host Specificity and Thallus Differentiation on Bacterial Communities in Siphonous Green Seaweeds |
| title_fullStr | Disentangling the Influence of Environment, Host Specificity and Thallus Differentiation on Bacterial Communities in Siphonous Green Seaweeds |
| title_full_unstemmed | Disentangling the Influence of Environment, Host Specificity and Thallus Differentiation on Bacterial Communities in Siphonous Green Seaweeds |
| title_short | Disentangling the Influence of Environment, Host Specificity and Thallus Differentiation on Bacterial Communities in Siphonous Green Seaweeds |
| title_sort | disentangling the influence of environment host specificity and thallus differentiation on bacterial communities in siphonous green seaweeds |
| topic | Caulerpa microbiome bacterial variation host specificity morphological niche |
| url | https://www.frontiersin.org/article/10.3389/fmicb.2019.00717/full |
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