Strain number NIES-2569  
Phylum Chlorophyta  
Class Chlorophyceae  
Scientific name Volvox ovalis Pocock ex Nozaki & Coleman  
Synonym  
Former name  
Common name Green alga ; Volvocine alga  
Locality (Date of collection) Texas, USA (before 2000)  
Latitude / Longitude  
Habitat (Isolation source) Freshwater (Water)  
History < Nozaki, Hisayoshi  
Isolator (Date of isolation) Cox, Elenor R. (before 2000)  
Identified by Nozaki, Hisayoshi  
State of strain Subculture; Unialgal; Clonal; Non-axenic  
Culture condition
(Preculture condition)
Medium:  AF-6VTAC  
Temperature:  22 C
Light intensity:  27-31 µmol photons/m2/sec, L/D cycle:  10L:14D
Duration:  42 D  
Gene information atpB ( AB592341 ) , psaA ( AB592339 ) , psaB ( AB592340 ) , psbC ( AB592338 ) , rbcL ( AB592342 )  
Cell size (min - max)  
Organization Colonial; Flagellate 
Characteristics Phototaxis ; Authentic strain  
Other strain no. Other strain no. : Volvox ovalis  
Remarks Fragile species to transportation stresses; Read and agree "How to order 4.1" 
Movie  
Reference
Yamagishi, S., Yamamoto, K., Takahashi, K., Kawai-Toyooka, H., Suzuki, S., Matsuzaki, R., Yamaguchi, H., Kawachi, M., Higashiyama, T., Nozaki, H. 2023 Evolutionary analysis of MID homologs during the transition from homothallic species to heterothallic species in Volvox sect. Volvox (Chlorophyceae). Phycol. Res., 72, 46-55.
Keywords: male gamete; mating system; minus dominance gene (MID); molecular evolution; sex; sperm packet; volvocine green algae
Strain(s): 28945646054154454556957257458265265365473285185285787289189213621363170817101859245725692735273627403382338337803782378638743984398639884021402543364432453545364537 
DOI: 10.1111/pre.12538

Takahashi, K., Kawai-Toyooka, H., Ootsuki, R., Hamaji, T., Tsuchikane, Y., Sekimoto, H., Higashiyama, T., Nozaki, H. 2021 Three sex phenotypes in a haploid algal species give insights into the evolutionary transition to a self-compatible mating system. Evolution, 75, 2984-2993.
Keywords: Haploid species; inbreeding; life-history evolution; mating systems; reproductive isolation; sex
Strain(s): 456460541544731732872891892136213632569338233833780378240664068447944804481448244834484 
PubMed: 34250602
DOI: 10.1111/evo.14306

Hanschen, E. R., Herron, M. D., Wiens, J. J., Nozaki, H., Michod, R. E. 2018 Repeated evolution and reversibilityof self-fertilization in the volvocinegreen algae. Evolution, 72, 386-398.
Keywords: Haploid; phylogenetics; self-fertilization; sex; sexual reproduction; volvocine green algae
Strain(s): 28941845645846054154354454556456656856957157257457858265373285185685787287587687787888088288389189210381362171117132457256927383382338837803782 
PubMed: 29134623
DOI: 10.1111/evo.13394

Hanschen, E. R., Herron, M. D., Wiens, J. J., Nozaki, H., Michod, R. E. 2018 Multicellularity drives the evolution of sexual traits. Am. Nat., 192, E93-E10.
Keywords: sex; volvocine green algae; multicellularity; ancestral state; reconstruction; anisogamy; sexual dimorphism
Strain(s): 28941842145645846052254154354454556456656856957157257457858265373275185185685787287587687787888088288389189210381362171117132457256927383382338837803782 
PubMed: 30125231
DOI: 10.1086/698301

Hanschen, E. R., Davison, D. R., Ferris, P. J., Michod, R. E. 2018 On the rediscovery of Volvox perglobator (Volvocales, Chlorophyceae) and the evolution of outcrossing from self-fertilization. Evol. Ecol. Res., 19, 299-318.
Keywords: homothallism; phylogenetics; reversion; self-fertilization; sexual reproduction; volvocine green algae
Strain(s): 28942145645846047452254154354454556456656856957157257457858265373275185185687287687787888088210381122114011481156115713621708171117131859245725692738338233883780378239864145425842594260 

Nozaki, H. & Coleman, A. W. 2011 A new species of Volvox sect. Merrillosphaera (Volvocaceae, Chlorophyceae) from Texas. J. Phycol., 47, 673-679.
Keywords: molecular phylogeny; morphology; taxonomy; Volvox ovalis sp. nov.; Volvox sect. Merrillosphaera
Strain(s): 2569 
PubMed: 27021996
DOI: 10.1111/j.1529-8817.2011.00975.x

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