Bracteacoccus
| Bracteacoccus | |
|---|---|
| File:Bracteacoccus aggregatus BM5-15 (IPPAS C-2045).png | |
| Bracteacoccus aggregatus | |
| Scientific classification Edit this classification | |
| Kingdom: | Plantae |
| Division: | Chlorophyta |
| Class: | Chlorophyceae |
| Order: | Sphaeropleales |
| Family: | Bracteacoccaceae P.M.Tsarenko |
| Genus: | Bracteacoccus Tereg, 1922[1] |
| Type species | |
| Bracteacoccus aggregatus Tereg[1]
| |
| Species | |
|
See text | |
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Bracteacoccus is a genus of green algae, the sole genus of the family Bracteacoccaceae.[1] It is a terrestrial alga commonly found in soils, from the tropics to the poles.[2]
History
[edit | edit source]Bracteacoccus was described by E. Tereg in 1922, based on the species Bracteacoccus aggregatus.[2] The name comes from the Latin term bractea, meaning a thin metal plate, and Greek kokkos, meaning berry.[3] Later it was synonymized with the genus Dictyococcus, until Richard C. Starr reestablished the genus.[4]
Description
[edit | edit source]Bracteacoccus consists of solitary, typically spherical cells from 4 to 110 μm in diameter.[2] Mature cells have multiple nuclei (i.e. are multinucleate). Each cell has multiple chloroplasts lining the outer wall of the cell; each chloroplast is angular in shape and lacks pyrenoids.[5]
Bracteacoccus reproduces asexually by producing zoospores. The zoospores have two flagella which are slightly unequal in length. Bracteacoccus may also reproduce by producing non-motile aplanospores.[2]
Morphologically, the genus is essentially indistinguishable from Pseudomuriella and Chromochloris, except for the fact that the latter two genera do not take up fluorescent dyes as easily.[6] The three genera are phylogenetically distinct.[2] It is also similar to the genus Dictyococcus, but Dictyococcus has chloroplasts which are inflected inwards.[4]
Genera
[edit | edit source]As of February 2022[update], AlgaeBase accepted the following species:[1]
- Bracteacoccus aerius H.W.Bischoff & Bold
- Bracteacoccus aggregatus Tereg
- Bracteacoccus anomalus (E.J.James) R.C.Starr
- Bracteacoccus bohemiensis Fuciková, Flechtner & L.A.Lewis
- Bracteacoccus bullatus Fuciková, Flechtner & L.A.Lewis
- Bracteacoccus deserticola Fuciková, Flechtner & L.A.Lewis
- Bracteacoccus giganteus H.W.Bischoff & Bold
- Bracteacoccus glacialis Fuciková, Flechtner & L.A.Lewis
- Bracteacoccus grandis H.W.Bischoff & Bold
- Bracteacoccus medionucleatus H.W.Bischoff & Bold
- Bracteacoccus minor (Schmidle ex Chodat) Petrová
- Bracteacoccus occidentalis Fuciková, Flechtner & L.A.Lewis
- Bracteacoccus polaris Fuciková, Flechtner & L.A.Lewis
- Bracteacoccus pseudominor H.W.Bischoff & Bold
- Bracteacoccus ruber Novis & Visnovsky
- Bracteacoccus xerophilus Fuciková, Flechtner & L.A.Lewis
A further species, Bracteacoccus helveticus (Kol & F.Chodat) Starr, was regarded as of "uncertain taxonomic status".[1]
References
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