Biology:Basichlamys
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
- ↑ See the NCBI webpage on Basichlamys. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. https://ftp.ncbi.nih.gov/pub/taxonomy/.
- ↑ 2.0 2.1 2.2 Guiry, M.D.; Guiry, G.M. (2008). "". AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org/browse/taxonomy/?id=44223.
- ↑ 3.0 3.1 3.2 Nakada, Takashi; Nozaki, Hisayoshi (2014). "Chapter 6. Flagellate Green Algae". Freshwater Algae of North America: Ecology and Classification (2 ed.). Elsevier Inc.. pp. 265–313. ISBN 978-0-12-385876-4.
- ↑ 4.0 4.1 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. doi:10.1080/09670269600651211a. Bibcode: 1996EJPhy..31...67N.
External links
- Basichlamys - Description with pictures
Wikidata ☰ {{{from}}} entry
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