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Identification of Highly Divergent Diatom-Derived Chloroplasts in Dinoflagellates, Including a Description of Durinskia kwazulunatalensis sp. nov. (Peridiniales, Dinophyceae)
Open accessAbstract
Dinoflagellates are known to possess chloroplasts of multiple origins derived from a red alga, a green alga, haptophytes, or diatoms. The monophyletic "dinotoms" harbor a chloroplast of diatom origin, but their chloroplasts are polyphyletic belonging to one of four genera: Chaetoceros, Cyclotella, Discostella, or Nitzschia. It has been speculated that serial replacement of diatom-derived chloroplasts by other diatoms has caused this diversity of chloroplasts. Although previous work suggested that the endosymbionts of Nitzschia origin might not be monophyletic, this has not been seriously investigated. To infer the number of replacements of diatom-derived chloroplasts in dinotoms, we analyzed the phylogenetic affinities of 14 species of dinotoms based on the endosymbiotic rbcL gene and SSU rDNA, and the host SSU rDNA. Resultant phylogenetic trees revealed that six species of Nitzschia were taken up by eight marine dinoflagellate species. Our phylogenies also indicate that four separate diatom species belonging to three genera were incorporated into the five freshwater dinotoms. Particular attention was paid to two crucially closely related species, Durinskia capensis and a novel species, D. kwazulunatalensis, because they possess distantly related Nitzschia species. This study clarified that any of a total of at least 11 diatom species in five genera are employed as an endosymbiont by 14 dinotoms, which infers a more frequent replacement of endosymbionts in the world of dinotoms than previously envisaged.
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“For example, dinoflagellates with diatom-derived plastids typically retain the diatom in their cytoplasm permanently at an intermediate level of integration (Yamada et al. 2017).”
From Genomic Insights into Plastid Evolution (2020) · cites this paper as Yamada et al. 2017
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“Finally, dinoflagellates are known to harbor plastids derived from diatoms. These so-called “dinotoms” are retained permanently in the cytosol and the evidence suggests that the host cell exhibits some level of control over their division (e.g., Hehenberger et al. 2016; Yamada et al. 2017).”
From Genomic Insights into Plastid Evolution (2020) · cites this paper as Yamada et al. 2017
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Dinoflagellate Nuclear SSU rRNA Phylogeny Suggests Multiple Plastid Losses and Replacements
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Rampant horizontal transfer and duplication of rubisco genes in eubacteria and plastids
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Research works printed but not linked: 2
- 1983, Endocytobiology II, 1015
- 1973, Peridinium balticum (Levander) Lemmerman, an unusual dinoflagellate with a mesocaryotic and an eukaryotic nucleus, J. Phycol, 9, 91
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Genomic Insights into Plastid Evolution
Sibbald, S. J., & Archibald, J. M. (2020) · Genome Biology and Evolution · doi:10.1093/gbe/evaa096 · Cited by 161
Yamada, N., Bolton, J. J., Trobajo, R., Mann, D. G., Dąbek, P., Witkowski, A., Onuma, R., Horiguchi, T., & Kroth, P. G. (2019) · Scientific Reports · doi:10.1038/s41598-019-46852-y · Cited by 53
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Metadata
- Authors
- Yamada, N., Sym, S. D., & Horiguchi, T.
- Affiliations
- Hokkaido University (JP)
- University of the Witwatersrand (ZA)
- Corresponding author
- Yamada, Norico
- Venue
- Molecular Biology and Evolution
- Publisher
- Oxford University Press (OUP)
- Published
- 2017-02-21
- Volume
- 34
- Issue
- 6
- Pages
- 1335-1351
- ISSN
- 0737-4038 (ISSN-L)
- 1537-1719
- OpenAlex
- W2589968215
- Cited by
- 59
- References
- 44
- Citations by year
- 2026: 4 · 2025: 3 · 2024: 11 · 2023: 7 · 2022: 7 · 2021: 4 · 2020: 6 · 2019: 2 · 2018: 7 · 2017: 8
- FWCI
- 2.57
- Type
- journal article
- Language
- en
- Open access
- green
- nbn-resolving.de
- Locations
- Molecular Biology and Evolution (publishedVersion)
- PubMed (publishedVersion)
- KOPS (University of Konstanz) (submittedVersion)
- Funders
- National Research Foundation
- Japan Society for the Promotion of Science (24370034)
- Japan Science and Technology Agency
- Topics
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Protist diversity and phylogeny
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Chromosomal and Genetic Variations
- Keywords
- Nitzschia, chloroplast phylogeny, new species description, Peridiniales
- MeSH terms
- Chloroplasts, Dinoflagellida, Phylogeny, Symbiosis, Diatoms
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