Attention:

Orders placed after 5:00 PM CST on November 18th for Freshwater Diatom Collection strains (designated 'FD'), strains maintained only in cryopreservation (designated 'cryo only'), and bulk volume microalgae will not ship until early February 2020. Please view the Upcoming 2019 Ordering Deadlines announcement for more information and deadlines.



UTEX 261
Chlorella sorokiniana


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Algae Details

UTEX Number: 261
Class: Chlorophyceae
Strain: Chlorella sorokiniana
Media: Proteose Medium
Origin: Madison, Wisconsin, USA
Description of Location:
Type Culture: No
Collection:
Isolation: M.A. Brannon
Isolator Number: 1
Deposition: CCAP (1952-5)
Relatives: CCAP 211/11D aka Stamm 4; SAG 33.80
Also Known As: C. vulgaris (Starr & Zeikus 1987); C. infusionum var. auxenophila (Shihira & Krauss 1965); C. vulgaris f. tertia
Notes: 3/38 to CCAP; physiology/biochemistry/taxonomy (Kessler & Huss 1992); The names of the Chlorella strains given in the last list of cultures (Starr & Zeikus 1987) were based primarily upon the taxonomic treatments of Kessler & Maifarth (1960), Kessler & Soeder (1962), Fott & Novakova (1969) and Kessler (1976). In 1992, Kessler & Huss revised the names of axenic UTEX cultures. Subsequently, most of the changes, but not all, were accepted and incorporated in the UTEX list. "[K&H]" tags the 1992 identifications of Kessler & Huss.

Strains that are maintained only in cryopreservation (designated 'cryo only') require a minimum of 4-weeks to grow out before shipment.


Cryopreservation Conditions

Temperature: -190 °C
Storage: Vapor phase of liquid nitrogen dewars

Cryopreservation stabilizes genomic integrity, preserves culture quality, minimizes maintenance costs and reduces the risk of catastrophic loss. A broad variety of techniques employed at the CCAP, at UTEX, and elsewhere, can be found in Day, J.G. and Brand, J.J. Cryopreservation Methods for Maintaining Microalgal Cultures, in Algal Culturing Techniques, ed. R. A. Andersen, Elsevier, Amsterdam, 2006. A relatively simple method that uses a minimum of specialized equipment, yet allows a large variety of microalgae to be cryopreserved with high viability, can be found on the Cryopreservation of Microalgae page.


Preparation of Strains Maintained Only In Cryopreservation For Orders

Strains that are maintained only in cryopreservation (cryo only) require a minimum of 4-weeks to thaw, grow out, and check viability before shipment. An estimated shipping date will be emailed when purchased. Updates via email will be sent if the strain is ready sooner or needs to be delayed further.

One tube of agar or liquid culture constitutes an order for a single culture of a single strain of living algae. UTEX makes no attempt to quantify the number of organisms or other characteristics of the culture. UTEX only guarantees the identity of the organism as specified in the strain history.


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