The succession of epiphytic microalgae conditions fungal community composition: how chytrids respond to blooms of dinoflagellates

The succession of epiphytic microalgae conditions fungal community composition: how chytrids respond to blooms of dinoflagellates

11 pages, 4 figures, 1 table, supplementary information https://doi.org/10.1038/s43705-023-00304-x.-- Data Availability: The datasets presented in this study are available in the NCBI Sequence Read Archive under Bioproject numbers PRJNA891539, PRJNA891506, and are included in the supplementary datasets of this published article

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Main Authors: Fernández Valero, Alan D., Reñé, Albert, Timoneda Solé, Natàlia, Pou, Núria, Gordi, Jordina, Sampedro, Nagore, Garcés, Esther
Other Authors: Ministerio de Ciencia e Innovación (España)
Format: artículo biblioteca
Language:English
Published: Springer 2023-12
Subjects:Conserve and sustainably use the oceans, seas and marine resources for sustainable development,
Online Access:http://hdl.handle.net/10261/347473
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spelling dig-icm-es-10261-3474732024-02-19T11:50:45Z The succession of epiphytic microalgae conditions fungal community composition: how chytrids respond to blooms of dinoflagellates Fernández Valero, Alan D. Reñé, Albert Timoneda Solé, Natàlia Pou, Núria Gordi, Jordina Sampedro, Nagore Garcés, Esther Ministerio de Ciencia e Innovación (España) Agencia Estatal de Investigación (España) Conserve and sustainably use the oceans, seas and marine resources for sustainable development 11 pages, 4 figures, 1 table, supplementary information https://doi.org/10.1038/s43705-023-00304-x.-- Data Availability: The datasets presented in this study are available in the NCBI Sequence Read Archive under Bioproject numbers PRJNA891539, PRJNA891506, and are included in the supplementary datasets of this published article This study aims to investigate the temporal dynamics of the epiphytic protist community on macroalgae, during the summer months, with a specific focus on fungi, and the interactions between zoosporic chytrid parasites and the proliferation of the dinoflagellates. We employed a combination of environmental sequencing techniques, incubation of natural samples, isolation of target organisms and laboratory experiments. Metabarcoding sequencing revealed changes in the dominant members of the epiphytic fungal community. Initially, fungi comprised < 1% of the protist community, mostly accounted for by Basidiomycota and Ascomycota, but with the emergence of Chytridiomycota during the mature phase of the biofilm, the fungal contribution increased to almost 30%. Chytridiomycota became dominant in parallel with an increase in the relative abundance of dinoflagellates in the community. Microscopy observations showed a general presence of chytrids following the peak proliferation of the dinoflagellate Ostreopsis sp., with the parasite, D. arenysensis as the dominant chytrid. The maximum infection prevalence was 2% indicating host-parasite coexistence. To further understand the in-situ prevalence of chytrids, we characterised the dynamics of the host abundance and prevalence of chytrids through co-culture. These laboratory experiments revealed intraspecific variability of D. arenysensis in its interaction with Ostreopsis, exhibiting a range from stable coexistence to the near-extinction of the host population. Moreover, while chytrids preferentially parasitized dinoflagellate cells, one of the strains examined displayed the ability to utilize pollen as a resource to maintain its viability, thus illustrating a facultative parasitic lifestyle. Our findings not only enrich our understanding of the diversity, ecology, and progression of epiphytic microalgal and fungal communities on Mediterranean coastal macroalgae, but they also shed light on the presence of zoosporic parasites in less-explored benthic habitats This study was funded by the Spanish Ministry of Science, Innovation, and Universities (MICINN) Project SMART PID2020-112978GB-I00, with institutional support from the “Severo Ochoa Centre of Excellence” accreditation (CEX2019-000928-S). [...] ADF-V is funded by the MICIU grant “Ayudas para contratos predoctorales para la formación de doctores 2018 (PRE2018-084893)” Peer reviewed 2024-02-19T11:50:44Z 2024-02-19T11:50:44Z 2023-12 artículo ISME Communications 3(1): 103 (2023) CEX2019-000928-S http://hdl.handle.net/10261/347473 10.1038/s43705-023-00304-x 2730-6151 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112978GB-I00/ES/REPARTO DE RECURSOS POR ESPECIALIZACION EN PARASITOS MARINOS/ Publisher's version https://doi.org/10.1038/s43705-023-00304-x Sí open Springer
institution ICM ES
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country España
countrycode ES
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libraryname Biblioteca del ICM España
language English
topic Conserve and sustainably use the oceans, seas and marine resources for sustainable development
Conserve and sustainably use the oceans, seas and marine resources for sustainable development
spellingShingle Conserve and sustainably use the oceans, seas and marine resources for sustainable development
Conserve and sustainably use the oceans, seas and marine resources for sustainable development
Fernández Valero, Alan D.
Reñé, Albert
Timoneda Solé, Natàlia
Pou, Núria
Gordi, Jordina
Sampedro, Nagore
Garcés, Esther
The succession of epiphytic microalgae conditions fungal community composition: how chytrids respond to blooms of dinoflagellates
description 11 pages, 4 figures, 1 table, supplementary information https://doi.org/10.1038/s43705-023-00304-x.-- Data Availability: The datasets presented in this study are available in the NCBI Sequence Read Archive under Bioproject numbers PRJNA891539, PRJNA891506, and are included in the supplementary datasets of this published article
author2 Ministerio de Ciencia e Innovación (España)
author_facet Ministerio de Ciencia e Innovación (España)
Fernández Valero, Alan D.
Reñé, Albert
Timoneda Solé, Natàlia
Pou, Núria
Gordi, Jordina
Sampedro, Nagore
Garcés, Esther
format artículo
topic_facet Conserve and sustainably use the oceans, seas and marine resources for sustainable development
author Fernández Valero, Alan D.
Reñé, Albert
Timoneda Solé, Natàlia
Pou, Núria
Gordi, Jordina
Sampedro, Nagore
Garcés, Esther
author_sort Fernández Valero, Alan D.
title The succession of epiphytic microalgae conditions fungal community composition: how chytrids respond to blooms of dinoflagellates
title_short The succession of epiphytic microalgae conditions fungal community composition: how chytrids respond to blooms of dinoflagellates
title_full The succession of epiphytic microalgae conditions fungal community composition: how chytrids respond to blooms of dinoflagellates
title_fullStr The succession of epiphytic microalgae conditions fungal community composition: how chytrids respond to blooms of dinoflagellates
title_full_unstemmed The succession of epiphytic microalgae conditions fungal community composition: how chytrids respond to blooms of dinoflagellates
title_sort succession of epiphytic microalgae conditions fungal community composition: how chytrids respond to blooms of dinoflagellates
publisher Springer
publishDate 2023-12
url http://hdl.handle.net/10261/347473
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