Basichlamys

Basichlamys

Basichlamys
Basichlamys sacculifera
Scientific classification Edit this classification
Kingdom: Plantae
Division: Chlorophyta
Class: Chlorophyceae
Order: Chlamydomonadales
Family: Tetrabaenaceae
Genus: Basichlamys
Skuja, 1956
Species:
B. sacculifera
Binomial name
Basichlamys sacculifera
(Scherffel) Skuja
Synonyms

Basichlamys is a monotypic genus of colonial green algae in the family Tetrabaenaceae.[1] The sole species is Basichlamys sacculifera. It is rare, but cosmopolitan in freshwaters.[2]

Basichlamys sacculifera consists of four-celled colonies of cells in a square, which are attached by their bases to a parental cellular sheath or sac. The cells are ovoid and asymmetrical, and each have two flagella, two contractile vacuoles, and a cup-shaped chloroplast containing a pyrenoid and a stigma.[3] The ultrastructure of the cell wall is similar to those of Tetrabaena and Gonium.[4] Its overall morphology is most similar to Tetrabaena, but the cells are not connected to each other directly but are instead connected by a common cellular sheath.[3]

Asexual reproduction occurs by autocolony formation,[2] or occasionally akinetes or hypnospores (dormant cells).[3] Sexual reproduction is isogamous and results in walled aplanozygotes.[2] The zygote walls are reticulate, a feature that it shares with Tetrabaena.[4]

References

  1. ^ See the NCBI webpage on Basichlamys. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
  2. ^ a b c Guiry, M.D.; Guiry, G.M. "Basichlamys Skuja, 1956". AlgaeBase. University of Galway. Retrieved 2025-03-14.
  3. ^ a b c Nakada, Takashi; Nozaki, Hisayoshi (2014). "Chapter 6. Flagellate Green Algae". In Wehr, John D.; Sheath, Robert G.; Kociolek, J. Patrick (eds.). Freshwater Algae of North America: Ecology and Classification (2 ed.). Elsevier Inc. pp. 265–313. ISBN 978-0-12-385876-4.
  4. ^ a b Nozaki, H.; Itoh, M.; Watanabe, M.M.; Kuroiwa, T. (1996). "Ultrastructure of the vegetative colonies and systematic position of Basichlamys (Volvocales, Chlorophyta)". European Journal of Phycology. 31 (1): 67–72. Bibcode:1996EJPhy..31...67N. doi:10.1080/09670269600651211a.


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