dc.contributor.author
Rädecker, Nils
dc.contributor.author
Pogoreutz, Claudia
dc.contributor.author
Gegner, Hagen M.
dc.contributor.author
Cardenas, Anny
dc.contributor.author
Perna, Gabriela
dc.contributor.author
Geißler, Laura
dc.contributor.author
Roth, Florian
dc.contributor.author
Bougoure, Jeremy
dc.contributor.author
Guagliardo, Paul
dc.contributor.author
Struck, Ulrich
dc.date.accessioned
2022-03-31T13:28:44Z
dc.date.available
2022-03-31T13:28:44Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/33488
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-33209
dc.description.abstract
Efficient nutrient cycling in the coral-algal symbiosis requires constant but limited nitrogen availability. Coral-associated diazotrophs, i.e., prokaryotes capable of fixing dinitrogen, may thus support productivity in a stable coral-algal symbiosis but could contribute to its breakdown when overstimulated. However, the effects of environmental conditions on diazotroph communities and their interaction with other members of the coral holobiont remain poorly understood. Here we assessed the effects of heat stress on diazotroph diversity and their contribution to holobiont nutrient cycling in the reef-building coral Stylophora pistillata from the central Red Sea. In a stable symbiotic state, we found that nitrogen fixation by coral-associated diazotrophs constitutes a source of nitrogen to the algal symbionts. Heat stress caused an increase in nitrogen fixation concomitant with a change in diazotroph communities. Yet, this additional fixed nitrogen was not assimilated by the coral tissue or the algal symbionts. We conclude that although diazotrophs may support coral holobiont functioning under low nitrogen availability, altered nutrient cycling during heat stress abates the dependence of the coral host and its algal symbionts on diazotroph-derived nitrogen. Consequently, the role of nitrogen fixation in the coral holobiont is strongly dependent on its nutritional status and varies dynamically with environmental conditions.
en
dc.format.extent
9 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
Climate-change ecology
en
dc.subject
Microbial ecology
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie
dc.title
Heat stress reduces the contribution of diazotrophs to coral holobiont nitrogen cycling
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.doi
10.1038/s41396-021-01158-8
dcterms.bibliographicCitation.journaltitle
The ISME Journal
dcterms.bibliographicCitation.number
4
dcterms.bibliographicCitation.pagestart
1110
dcterms.bibliographicCitation.pageend
1118
dcterms.bibliographicCitation.volume
16
dcterms.bibliographicCitation.url
https://doi.org/10.1038/s41396-021-01158-8
refubium.affiliation
Geowissenschaften
refubium.affiliation.other
Institut für Geologische Wissenschaften / Fachrichtung Paläontologie

refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.eissn
1751-7370
refubium.resourceType.provider
WoS-Alert