Publikation:
Fate of hepatotoxin microcystin during infection of cyanobacteria by fungal chytrid parasites

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dc.contributor.authorAgha, Ramsy
dc.contributor.authorGerphagnon, Mélanie
dc.contributor.authorFastner, Jutta
dc.contributor.authorSchampera, Charlotte
dc.date.accessioned2024-06-16T13:07:44Z
dc.date.available2024-06-16T13:07:44Z
dc.date.issued2022
dc.description.abstractChytrid parasites are increasingly recognized as ubiquitous and potent control agents of phytoplankton, including bloom-forming toxigenic cyanobacteria. In order to explore the fate of the cyanobacterial toxin microcystins (MCs) and assess potential upregulation of their production under parasite attack, a laboratory experiment was conducted to evaluate short- and long-term variation in extracellular and intracellular MC in the cyanobacteria Planktothrix agardhii and P. rubescens, both under chytrid infection and in the presence of lysates of previously infected cyanobacteria. MCs release under parasite infection was limited and not different to uninfected cyanobacteria, with extracellular toxin shares never exceeding 10%, substantially below those caused by mechanical lysis induced by a cold-shock. Intracellular MC contents in P. rubescens under infection were not significantly different from uninfected controls, whereas infected P. agardhii showed a 1.5-fold increase in intracellular MC concentrations, but this was detected within the first 48 hours after parasite inoculation and not later, indicating no substantial MC upregulation in cells being infected. The presence of lysates of previously infected cyanobacteria did not elicit higher intracellular MC contents in exposed cyanobacteria, speaking against a putative upregulation of toxin production induced via quorum sensing in response to parasite attack. These results indicate that chytrid epidemics can constitute a bloom decay mechanism that is not accompanied by massive release of toxins into the medium. © 2022 Elsevieren
dc.format.extent1 Online-Ressource (8 Seiten)
dc.format.mediumonline resource
dc.identifier.doihttps://doi.org/10.60810/openumwelt-904
dc.identifier.urihttps://openumwelt.de/handle/123456789/2447
dc.language.isoeng
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectBlaualgen
dc.titleFate of hepatotoxin microcystin during infection of cyanobacteria by fungal chytrid parasites
dc.typeWissenschaftlicher Artikel
dc.type.dcmitext
dc.type.mediumcomputer
dspace.entity.typePublication
local.bibliographicCitation.journalTitleHarmful algae
local.bibliographicCitation.originalDOI10.1016/j.hal.2022.102288
local.bibliographicCitation.volume118 (2022)
local.collectionAufsätze
local.contributor.authorId02191269
local.contributor.authorId02191270
local.contributor.authorId02191271
local.identifier.catalogId02495595
local.ingest.leader05099naa a2200000uu 4500
local.jointTitleFATE OF HEPATOTOXIN MICROCYSTIN DURING INFECTION OF CYANOBACTERIA BY FUNGAL CHYTRID PARASITES
local.reviewtrue
local.sourcecatalog
local.staffPublicationtrue
relation.isAuthorOfPublication890ce9dc-f5f1-4671-a2de-a1aa7e420d64
relation.isAuthorOfPublication.latestForDiscovery890ce9dc-f5f1-4671-a2de-a1aa7e420d64
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