Navigation überspringen
Universitätsbibliothek Heidelberg
Status: Bibliographieeintrag

Verfügbarkeit
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Rädecker, Nils [VerfasserIn]   i
 Pogoreutz, Claudia [VerfasserIn]   i
 Gegner, Hagen M. [VerfasserIn]   i
 Cárdenas, Anny [VerfasserIn]   i
 Roth, Florian [VerfasserIn]   i
 Bougoure, Jeremy [VerfasserIn]   i
 Guagliardo, Paul [VerfasserIn]   i
 Wild, Christian [VerfasserIn]   i
 Pernice, Mathieu [VerfasserIn]   i
 Raina, Jean-Baptiste [VerfasserIn]   i
 Meibom, Anders [VerfasserIn]   i
 Voolstra, Christian [VerfasserIn]   i
Titel:Heat stress destabilizes symbiotic nutrient cycling in corals
Verf.angabe:Nils Rädecker, Claudia Pogoreutz, Hagen M. Gegner, Anny Cárdenas, Florian Roth, Jeremy Bougoure, Paul Guagliardo, Christian Wild, Mathieu Pernice, Jean-Baptiste Raina, Anders Meibom, and Christian R. Voolstra
E-Jahr:2021
Jahr:January 26, 2021
Umfang:11 S.
Fussnoten:Gesehen am 08.04.2021
Titel Quelle:Enthalten in: National Academy of Sciences (Washington, DC)Proceedings of the National Academy of Sciences of the United States of America
Ort Quelle:Washington, DC : National Acad. of Sciences, 1915
Jahr Quelle:2021
Band/Heft Quelle:118(2021), 5, Artikel-ID e2022653118, Seite 1-11
ISSN Quelle:1091-6490
Abstract:Recurrent mass bleaching events are pushing coral reefs worldwide to the brink of ecological collapse. While the symptoms and consequences of this breakdown of the coral-algal symbiosis have been extensively characterized, our understanding of the underlying causes remains incomplete. Here, we investigated the nutrient fluxes and the physiological as well as molecular responses of the widespread coral Stylophora pistillata to heat stress prior to the onset of bleaching to identify processes involved in the breakdown of the coral-algal symbiosis. We show that altered nutrient cycling during heat stress is a primary driver of the functional breakdown of the symbiosis. Heat stress increased the metabolic energy demand of the coral host, which was compensated by the catabolic degradation of amino acids. The resulting shift from net uptake to release of ammonium by the coral holobiont subsequently promoted the growth of algal symbionts and retention of photosynthates. Together, these processes form a feedback loop that will gradually lead to the decoupling of carbon translocation from the symbiont to the host. Energy limitation and altered symbiotic nutrient cycling are thus key factors in the early heat stress response, directly contributing to the breakdown of the coral-algal symbiosis. Interpreting the stability of the coral holobiont in light of its metabolic interactions provides a missing link in our understanding of the environmental drivers of bleaching and may ultimately help uncover fundamental processes underpinning the functioning of endosymbioses in general.
DOI:doi:10.1073/pnas.2022653118
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1073/pnas.2022653118
 Volltext: https://www.pnas.org/content/118/5/e2022653118
 DOI: https://doi.org/10.1073/pnas.2022653118
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:coral bleaching
 endosymbiosis
 metabolic interaction
 resource competition
 selfish symbiont
K10plus-PPN:1753362474
Verknüpfungen:→ Zeitschrift

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/68721390   QR-Code
zum Seitenanfang