Halosphaera

Halosphaera
Halosphaera viridis
Scientific classification Edit this classification
Kingdom: Plantae
Division: Chlorophyta
Class: Pyramimonadophyceae
Order: Pyramimonadales
Family: Pyramimonadaceae
Genus: Halosphaera
Schmitz 1879
Type species
Halosphaera viridis
Schmitz 1879[1]
Species

Halosphaera is a genus of green algae in the order Pyramimonadales.[2] Halosphaera is widely distributed in the plankton of oceans, and is found in both hemispheres.[1]

Halosphaera consists of two life stages: a non-motile coccoid stage, called the phycoma stage (pl. phycomata), and a flagellated stage. The phycoma is spherical, up to 800 μm in diameter, with two layers of cell walls: The inner wall is pectin-like, while the outer wall is tough and sporopollenin-like. Mature phycomata contain a single nucleus and several numerous chloroplasts, in most species with pyrenoids.[1]

Pterosperma divides asexually in the phycoma stage, forming a large number of flagellate swarmer cells. Swarmers have four long flagella which arise from a pit in the anterior surrounded by four lobes. Each contain a single parietal chloroplast with two to four pyrenoids, and an eyespot. The cell body is covered with several types organic scales, and the flagella are also covered with multiple layers of cells. Flagellate cells can also divide by fission.[1]

References

  1. ^ a b c d Guiry, M.D.; Guiry, G.M. "Halosphaera F.Schmitz, 1878". AlgaeBase. University of Galway. Retrieved 2026-05-09.
  2. ^ See the NCBI webpage on Halosphaera. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.


Stub icon

This green algae-related article is a stub. You can help Wikipedia by adding missing information.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.