Sagenista

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Sagenista
A
labyrinthulid
Scientific classification Edit this classification
Domain: Eukaryota
Clade: Diaphoretickes
Clade: SAR
Clade: Stramenopiles
Phylum: Bigyra
Subphylum: Sagenista
Cavalier- Smith, 1995[1] stat. n. 2006
Groups
  • Eogyrea
    Cavalier-Smith 2013
  • Labyrinthulea
    (Lister 1891) Olive 1975 ex Cavalier-Smith 1986

Sagenista is a group of

bicosoecids have been removed, and Eogyrea were added, in order to make the group monophyletic.[2][3][4][5]

Some have a special organelle called a bothrosome (or sagenogenetosome). It is usually found in a marine environments rich in algae and sea grass. It is capable of movement by use of this organelle.[citation needed]

They are generally decomposers. They are cultivated for their active production of Omega-3 fatty acids. These acids are used as an approved additive for animal feed.[citation needed]

There is a debate about whether some species of Sagenista contains the photosynthetic pigment chlorophyll C.[citation needed]

Bothrosome

They are capable of excreting an extoplasmic net of filaments for cells to glide upon. These tiny filaments provide a network for cells to travel upon to soak up nutrients from the surrounding environment.[citation needed]

Examples

  • Labyrinthula: Possesses a bothrosome. It is being studied for its pathogenic nature in marine environments. It has caused wasting disease in eelgrass, Zostera marina.[6][7]

References

  1. ^ Cavalier-Smith, T. (1995). Membrane heredity, symbiogenesis, and the multiple origins of algae. In: Arai, R., Kato, M., Doi, Y. (eds). Biodiversity and evolution. The National Science Museum Foundation. Tokyo, pp 75-114.
  2. ^ "Browse taxonomic tree". Catalogue of Life : 2008 Annual Checklist.
  3. S2CID 29567514
    .
  4. doi:10.3724/SP.J.1002.2008.08060 (inactive 31 January 2024).{{cite journal}}: CS1 maint: DOI inactive as of January 2024 (link
    )
  5. .
  6. .
  7. ^ Ralph & Short 2002.

Bibliography