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Pleodorina thompsonii

Page history last edited by PBworks 17 years, 7 months ago

 

Images

 

 

Taxonomic characters

clearly distinguished from other Eudorina/Pleodorina species by having obligative somatic cells that are distributed only in the anterior portion of 16- or 32-celled colonies, and by containing a single large pyrenoid in the chloroplast of mature reproductive cells (Nozaki et al 2006)

 

 

Morphology / Structure

colonies ovoid or spherical in shape; 16 or 32 cells embedded at the periphery of the gelatinous matrix (often wavy); 4 or 12 obligative somatic cells (at the anterior pole) in 16- or 32-celled colonies, respectively;

 

 

 

Life history

anisogamous sexual reproduction

 

 

Ecology

isolated from a small muddy stream near College Park, south of College Station, TX, USA (Nozaki et al 2006)

 

 

Availability in culture collections or research labs

 

MCC-NIES

 

 

Media and growth conditions in culture

Nozaki et al 2006: AF-6 medium (Kato 1982) modified by the elimination of CaCO3 and by the addition of 400mg/L MES (Kasai et al. 2004) or VTAC medium (Nozaki et al. 1989, Kasai et al. 2004), kept at 20–22C, under a photon irradiance of 150–200 umol photons/m2/s and with a 14:10 light:dark (LD) or 16:8 LD cycle provided by cool-white fluorescent lamps. MG medium (Ichimura 1971) can also be used (Nozaki et al 2006)

 

 

Sequence Information

 

Links to other databases

 

Index Nominum Algarum

 

 

 

 

Miscellaneous

 

 

 

 

Selected References

Nozaki H, Ott FD, Coleman AW. 2006. Morphology, molecular phylogeny and taxonomy if two new species of Pleodorina (Volvoceae, Chlorophyceae). J. Phycol. 42: 1072-1080.

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Contributors

Nedelcu AManedelcu@unb.ca

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