Bigyra
| Bigyra | |
|---|---|
| |
vegetative cell and extended ectoplasmic network.
| |
Scientific classification 
| |
| Domain: | Eukaryota |
| Clade: | Diaphoretickes |
| Clade: | SAR |
| Clade: | Stramenopiles |
| Phylum: | Bigyra |
| Clades[4] | |
| |
Bigyra (from
Ecological diversity
Bigyra is a diverse group of
Evolution and systematics
External
Bigyra contains many of the earliest-diverging
All of Bigyra are
Internal
Bigyra is composed of two
The monophyly of Bigyra remains uncertain. The positions of the two bigyran clades (Opalozoa and Sagenista) are not consistent between the published studies, because they diverged from each other very early after the separation from the ancestor of all stramenopiles. This 'deep branching' makes it difficult to find the exact branching order of bigyran clades.[2] Additionally, not all clades are well-represented by molecular data in these studies.[10] Several studies support the monophyly of Bigyra.[10][11] Other studies support its paraphyly.[12][13]
| Monophyletic Bigyra[10] | Paraphyletic Bigyra[13] | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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History
| Initial phylogeny of Bigyra (1997)[14] | ||||||||||||||||||||||||||||||||||||||||||||||
|
Bigyra was first described in 1997 by the
- cell walls.
- .
- phagotrophic zooflagellates.
Their common ancestor was thought to have evolved from
Posterior analyses completely changed the phylogeny of Stramenopiles. They revealed
- polyphyletic diverse phylum that was modified to only include Opalinata and Nucleohelea;
- bicosoecids;
- Labyrinthulea.
Bigyra was modified again in 2013 after the discovery of several
References
- ^ S2CID 6557779.
- ^ S2CID 29567514.
- ^ PMID 23219323.
- ^ PMID 30257078.
- ^ ISBN 978-3-319-28147-6.
- ^ Karpov SA, Sogin ML, Silberman JD (2001). "Rootlet homology, taxonomy, and phylogeny of bicosoecids based on 18S rRNA gene sequences". Protistology. 2 (1): 34–47.
- S2CID 249935619.
- PMID 19213601.
- PMID 18977305.
- ^ S2CID 202865459.
- ^ PMID 28875267.
- S2CID 230819360.
- ^ S2CID 247815732.
- ^ .
- PMID 28822908.
