Spatial and temporal changes of parasitic chytrids of cyanobacteria

Abstract Parasitism is certainly one of the most important driving biotic factors of cyanobacterial blooms which remains largely understudied. Among these parasites, fungi from the phylum Chytridiomycota (i.e. chytrids) are the only eukaryotic microorganisms infecting cyanobacteria. Here, we address...

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Autores principales:	Mélanie Gerphagnon, Jonathan Colombet, Delphine Latour, Télesphore Sime-Ngando
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a6e0f7646ded4defa2e33158854dce9f
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spelling	oai:doaj.org-article:a6e0f7646ded4defa2e33158854dce9f2021-12-02T11:52:16ZSpatial and temporal changes of parasitic chytrids of cyanobacteria10.1038/s41598-017-06273-12045-2322https://doaj.org/article/a6e0f7646ded4defa2e33158854dce9f2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06273-1https://doaj.org/toc/2045-2322Abstract Parasitism is certainly one of the most important driving biotic factors of cyanobacterial blooms which remains largely understudied. Among these parasites, fungi from the phylum Chytridiomycota (i.e. chytrids) are the only eukaryotic microorganisms infecting cyanobacteria. Here, we address spatiotemporal dynamics of the cyanobacterial host Dolichospermum macrosporum (syn. Anabaena macrospora) and its associated chytrid parasites, Rhizosiphon spp., in an eutrophic lake by studying spatial (vertical, horizontal) and temporal (annual and inter-annual) variations. Our results show homogenous chytrid infection patterns along the water column and across sampling stations. However, the prevalence of infection presented drastic changes with time, at both intra- and inter-annual scales. In 2007, a maximum of 98% of vegetative cells were infected by R. crassum whereas this fungal species was not reported seven years later. In opposite, R. akinetum, a chytrid infecting only akinetes, increased its prevalence by 42% during the same period. High chytrid infection rate on the akinetes might have sizeable consequences on host recruitment (and proliferation) success from year to year, as supported by the recorded inter-annual host dynamics (affecting also the success of other chytrid parasites). The spatial homogenous chytrid infection on this cyanobacterium, coupled to both seasonal and inter-annual changes indicates that time, rather than space, controls such highly dynamic host-parasite relationships.Mélanie GerphagnonJonathan ColombetDelphine LatourTélesphore Sime-NgandoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mélanie Gerphagnon Jonathan Colombet Delphine Latour Télesphore Sime-Ngando Spatial and temporal changes of parasitic chytrids of cyanobacteria
description	Abstract Parasitism is certainly one of the most important driving biotic factors of cyanobacterial blooms which remains largely understudied. Among these parasites, fungi from the phylum Chytridiomycota (i.e. chytrids) are the only eukaryotic microorganisms infecting cyanobacteria. Here, we address spatiotemporal dynamics of the cyanobacterial host Dolichospermum macrosporum (syn. Anabaena macrospora) and its associated chytrid parasites, Rhizosiphon spp., in an eutrophic lake by studying spatial (vertical, horizontal) and temporal (annual and inter-annual) variations. Our results show homogenous chytrid infection patterns along the water column and across sampling stations. However, the prevalence of infection presented drastic changes with time, at both intra- and inter-annual scales. In 2007, a maximum of 98% of vegetative cells were infected by R. crassum whereas this fungal species was not reported seven years later. In opposite, R. akinetum, a chytrid infecting only akinetes, increased its prevalence by 42% during the same period. High chytrid infection rate on the akinetes might have sizeable consequences on host recruitment (and proliferation) success from year to year, as supported by the recorded inter-annual host dynamics (affecting also the success of other chytrid parasites). The spatial homogenous chytrid infection on this cyanobacterium, coupled to both seasonal and inter-annual changes indicates that time, rather than space, controls such highly dynamic host-parasite relationships.
format	article
author	Mélanie Gerphagnon Jonathan Colombet Delphine Latour Télesphore Sime-Ngando
author_facet	Mélanie Gerphagnon Jonathan Colombet Delphine Latour Télesphore Sime-Ngando
author_sort	Mélanie Gerphagnon
title	Spatial and temporal changes of parasitic chytrids of cyanobacteria
title_short	Spatial and temporal changes of parasitic chytrids of cyanobacteria
title_full	Spatial and temporal changes of parasitic chytrids of cyanobacteria
title_fullStr	Spatial and temporal changes of parasitic chytrids of cyanobacteria
title_full_unstemmed	Spatial and temporal changes of parasitic chytrids of cyanobacteria
title_sort	spatial and temporal changes of parasitic chytrids of cyanobacteria
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/a6e0f7646ded4defa2e33158854dce9f
work_keys_str_mv	AT melaniegerphagnon spatialandtemporalchangesofparasiticchytridsofcyanobacteria AT jonathancolombet spatialandtemporalchangesofparasiticchytridsofcyanobacteria AT delphinelatour spatialandtemporalchangesofparasiticchytridsofcyanobacteria AT telesphoresimengando spatialandtemporalchangesofparasiticchytridsofcyanobacteria
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Spatial and temporal changes of parasitic chytrids of cyanobacteria

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