Prey preference in a kleptoplastic dinoflagellate is linked to photosynthetic performance
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Author
Yamada, Norico
Lepetit, Bernard
Sprecher, Brittany N.
Buck, Jochen M.
Bergmann, Paavo
Kroth, Peter G.
Bolton, John J.
Dąbek, Przemysław
Witkowski, Andrzej
Kim, So-Yeon
Publication date
2023-06-30ISSN
1751-7362
Abstract
Dinoflagellates of the family Kryptoperidiniaceae, known as “dinotoms”, possess diatom-derived endosymbionts and contain individuals at three successive evolutionary stages: a transiently maintained kleptoplastic stage; a stage containing multiple permanently maintained diatom endosymbionts; and a further permanent stage containing a single diatom endosymbiont. Kleptoplastic dinotoms were discovered only recently, in Durinskia capensis; until now it has not been investigated kleptoplastic behavior and the metabolic and genetic integration of host and prey. Here, we show D. capensis is able to use various diatom species as kleptoplastids and exhibits different photosynthetic capacities depending on the diatom species. This is in contrast with the prey diatoms in their free-living stage, as there are no differences in their photosynthetic capacities. Complete photosynthesis including both the light reactions and the Calvin cycle remain active only when D. capensis feeds on its habitual associate, the “essential” diatom Nitzschia captiva. The organelles of another edible diatom, N. inconspicua, are preserved intact after ingestion by D. capensis and expresses the psbC gene of the photosynthetic light reaction, while RuBisCO gene expression is lost. Our results indicate that edible but non-essential, “supplemental” diatoms are used by D. capensis for producing ATP and NADPH, but not for carbon fixation. D. capensis has established a species-specifically designed metabolic system allowing carbon fixation to be performed only by its essential diatoms. The ability of D. capensis to ingest supplemental diatoms as kleptoplastids may be a flexible ecological strategy, to use these diatoms as “emergency supplies” while no essential diatoms are available.
Document Type
Article
Document version
Published version
Language
English
Subject (CDU)
574 - General ecology and biodiversity
Pages
11
Publisher
Springer Nature
Is part of
The ISME Journal: Multidisciplinary Journal of Microbial Ecology
Citation
Yamada, Norico, Bernard Lepetit, David G. Mann, Brittany N. Sprecher, Jochen M. Buck, Paavo Bergmann, and Peter G. Kroth et al. 2023. "Prey Preference In A Kleptoplastic Dinoflagellate Is Linked To Photosynthetic Performance". The ISME Journal. doi:10.1038/s41396-023-01464-3.
Program
Aigües Marines i Continentals
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- ARTICLES CIENTÍFICS [2555]
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