Cited by 95Protist diversity and phylogenyDiatoms and Algae ResearchPhotosynthetic Processes and Mechanisms

INTRACELLULAR CYANOBACTERIAL SYMBIONTS IN THE MARINE DIATOM CLIMACODIUM FRAUENFELDIANUM (BACILLARIOPHYCEAE)

Carpenter, Edward J., Janson, Sven·2000·Journal of Phycology

Abstract

The diatom Climacodium frauenfeldianum Grunow was collected in the tropical Atlantic and Pacific Oceans. Observations with epifluorescence microscopy revealed that this diatom contained coccoid symbionts (2.5–3.5 μm) with a typical cyanobacterial fluorescence in addition to that of their own chloroplasts. Mean concentration of C. frauenfeldianum for 28 stations in the SW tropical Pacific Ocean was 530 x 10 3 (SE = 1372) cells·m − 2 , with highest concentration (mean 17.5 cells·L − 1 ) at 40‐m depth. The symbiosis was only observed at water temperatures between 26.3 and 28.9° C, with highest concentrations at 27.7° C. Three almost complete 16S rDNA sequences from one sample were determined, and they were identical. The phylogenetic analysis of this 16S rDNA sequence and those from other cyanobacteria and plastids revealed that it was closely related to the 16S rDNA sequence from Cyanothece sp. ATCC 51142. Cyanothece sp. ATCC 51142 is a unicellular nitrogen‐fixing cyanobacterium isolated from a coastal marine environment and has ultrastructural features similar to the symbionts of C. frauenfeldianum . The close relationship between Cyanothece sp. and the cyanobacterial symbiont in C. frauenfeldianum suggests the potential for nitrogen fixation in the symbiosis.

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Crossref · 10.1046/j.1529-8817.2000.99163.x

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  • A diatom species has been characterized that has endosymbiosed a nitrogen-fixing cyanobacterium, suggesting such relationships are beneficial to at least one of the two species.

    “recently, a diatom species has been characterized, which has endosymbiosed a nitrogen-fixing cyanobacterium, suggesting that such relationships are indeed beneficial to at least one of the two species [104,105]”

    From Biofuels from algae: Challenges and potential (2010) · cites this paper as [105]

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Authors
Carpenter, E. J., & Janson, S.
Affiliations
Stony Brook University (US)
Corresponding author
Carpenter, Edward J.
Venue
Journal of Phycology
Publisher
Wiley
Published
2000-06
Volume
36
Issue
3
Pages
540-544
ISSN
  • 0022-3646 (ISSN-L)
  • 1529-8817
OpenAlex
W2000164507
Cited by
95
References
10
Citations by year
2026: 2 · 2025: 3 · 2024: 5 · 2023: 4 · 2022: 6 · 2021: 4 · 2020: 4 · 2019: 5 · 2018: 4 · 2017: 2 · 2016: 7 · 2015: 4 · 2014: 1 · 2013: 5 · 2012: 3
FWCI
0.48
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Phycology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protist diversity and phylogeny
  • Physical Sciences › Materials Science › Biomaterials › Diatoms and Algae Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
Keywords
cyanobacterial symbionts, intracellular symbionts, Cyanothece, nitrogen fixation, 16S rDNA phylogeny, tropical Pacific, epifluorescence microscopy, water temperature

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