Closterium

Closterium
Closterium sp.
Scientific classification
Domain:	Eukaryota
Kingdom:	Plantae
Division:	Charophyta
Class:	Zygnemophyceae
Order:	Desmidiales
Family:	Closteriaceae
Genus:	Closterium
Species / Subspecies
C. acerosum C. calosporum  subspecies C. calosporum var. himalayense C. cornu C. ehrenbergii C. gracile C. incurvum C. littorale C. lunla C. moniliferum C. navicula C. peracerosum C. peracerosum-strigosum-littorale complex C. pleurodermatum C. pusillum C. selenastrum C. spinosporum C. tumidum C. venus C. wallichii

In taxonomy, Closterium is a genus of algae, specifically of the family Closteriaceae.^[1]

Morphology

Elongated cylindrical, often lunate unicells composed of two symmetrical semicells. Single, axial chloroplasts with many pyrenoids in each semicell. Very conspicuous vacuoles at the ends of the cell with CaSO₄ (Gypsum) crystals "dancing" around within them.

Further species

Closterium regulare Breb has been rediscovered in the United Kingdom. It was first described from Lower Normandy by Brebisson.^[2]

Reproduction

Closterium sp. during a miotic phase. (upper-left is a different diatom)

Closterium sp.

Asexual: budding from a partitioned parent cell.

Sexual: Conjugation to form a hypnozygote.

References

1. ^ See the NCBI webpage on Closterium. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. ftp://ftp.ncbi.nih.gov/pub/taxonomy/. Retrieved 2007-03-19. 
2. ^ Carter, C.F. and Williamson, D.B. (2008) A rediscovered UK desmid: Closterium regulare Breb The Phycologist. Autumn 2008 No.75:24

External links

Scientific references

• PubMed references for Closterium
• PubMed Central references for Closterium
• Google Scholar references for Closterium

Scientific databases

• NCBI taxonomy page for Closterium
• Search Tree of Life taxonomy pages for Closterium
• Search Species2000 page for Closterium

• AlgaeBase
• AlgaTerra database
• Index Nominum Genericorum