| 词条 | Sagenista |
| 释义 |
| name = Sagenista | image = Aplanonet3.jpg | image_caption = A labyrinthulid | domain = Eukaryota | unranked_regnum = SAR | superphylum = Heterokonta | unranked_classis = Sagenista | unranked_classis_authority = Cavalier- Smith, 1995[1] stat. n. 2006 | subdivision_ranks = Groups | subdivision =
}}Sagenista is a group of heterokonts containing the labyrinthulids and Eogyrea, a class of yet uncultured protists. Originally, it contained the Labyrinthulids and bicosoecids. However at present the 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|date=July 2017}} 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|date=July 2017}} There is a debate about whether some species of Sagenista contains a photosynthetic pigment labeled chlorophyll C.{{citation needed|date=July 2017}} BothrosomeThey 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|date=July 2017}} Examples
References1. ^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. ^{{cite web | url = http://www.catalogueoflife.org/browse_taxa.php?path=0,3361,3683,3684,3685&selected_taxon=3685 | title = Browse taxonomic tree | work = Catalogue of Life : 2008 Annual Checklist }} 3. ^{{cite journal | year= 2006 | title= Phylogeny and megasystematics of phagotrophic heterokonts (kingdom Chromista) | author1 =Cavalier-Smith, T. | author2 =Chao, Ema E.-Y. | journal= Journal of Molecular Evolution | volume = 62 | issue = 4 | pages= 388–420 |pmid=16557340 | doi=10.1007/s00239-004-0353-8}} 4. ^{{Cite journal | doi = 10.3724/SP.J.1002.2008.08060 | url = http://www.plantsystematics.com/qikan/manage/wenzhang/jse08060.pdf | title = An overview of the phylogeny and diversity of eukaryotes | author = Sandra L. BALDAUF | journal = Journal of Systematics and Evolution | volume = 46 | issue = 3 | pages = 263–273 | year = 2008 | doi-broken-date = 2018-04-08 }} 5. ^{{cite journal | url = http://www.sciencedirect.com/science/article/pii/S0932473912000909 | last1 =Cavalier-Smith, T | last2 =Scoble, J. M.| year=2013 | title=Phylogeny of Heterokonta: Incisomonas marina, a uniciliate gliding opalozoan related to Solenicola (Nanomonadea), and evidence that Actinophryida evolved from raphidophytes | journal=European Journal of Protistology | volume =49 | issue = 3| pages=328–353 |pmid= | doi=10.1016/j.ejop.2012.09.002}} Bibliography
2 : Bigyra|SAR supergroup unranked clades |
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