Cited by 107Protist diversity and phylogenyInfectious Diseases and MycologyPlant Pathogens and Resistance

Are thraustochytrids algae?

Leyland, Ben, Leu, Stefan, Boussiba, Sammy·2017·Fungal Biology

Abstract

Thraustochytrids, a heterotrophic fungus-like clade of Stramenopiles, are becoming an increasingly important source of polyunsaturated fatty acids (PUFAs) for biotechnological industries. PUFA rich oils from these organisms are subsequently referred to in some literature and marketing sources as being derived from 'algae', in spite of their non-photosynthetic source organism. In this review, we attempt to disentangle the evolutionary relationship of the Thraustochytrids from other Protists, demonstrating that there is no scientific basis for the aforementioned misnomer. Some research has previously suggested that the ancestor of the Stramenopiles may have been photosynthetic, and subsequently lost their plastids in multiple lineages. The placement of the Thraustochytrids within the Stramenopiles and their possible plastid loss may have been a source of obfuscation. It is becoming increasingly evident that the common ancestor of the Stramenopiles was not photosynthetic, and that only the Ochrophyte lineage later engulfed a plastid via higher order endosymbiosis. Because all basal lineages of Stramenopiles are non-plastidial heterotrophs, including the Thraustochytrids, there remains no phylogenetic, biological, or ecological justification for the term 'algae' to be applied to Thraustochytrids or their products.

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Crossref · 10.1016/j.funbio.2017.07.006

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Authors
Leyland, B., Leu, S., & Boussiba, S.
Affiliations
Ben-Gurion University of the Negev (IL)
Corresponding author
Leyland, Ben
Venue
Fungal Biology
Publisher
Elsevier BV
Published
2017-10
Volume
121
Issue
10
Pages
835-840
ISSN
1878-6146 (ISSN-L)
OpenAlex
W2744745572
Cited by
107
References
49
Citations by year
2026: 5 · 2025: 10 · 2024: 9 · 2023: 9 · 2022: 15 · 2021: 16 · 2020: 29 · 2019: 8 · 2018: 6
FWCI
1.10
Type
journal article
Language
en
Update notices
erratum (2020-06-01)
Open access
closed
Locations
  • Fungal Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protist diversity and phylogeny
  • Health Sciences › Veterinary › Small Animals › Infectious Diseases and Mycology
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Pathogens and Resistance
Keywords
thraustochytrids, stramenopiles, polyunsaturated fatty acids, heterotrophic protists, plastid loss, endosymbiosis, protist phylogeny
MeSH terms
Rhodophyta, Biological Evolution, Fatty Acids, Unsaturated, Photosynthesis, Phylogeny, Likelihood Functions, Plastids, Stramenopiles

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