Strain number NIES-544  
Phylum Chlorophyta  
Class Chlorophyceae  
Scientific name Volvox tertius Art.Meyer  
Synonym Merillosphaera tertia (Art.Meyer) W.R.Shaw 1922; Heterotypic synonyms; Volvox bernardii Playfair null; Volvox mononae G.M.Smith 1920; Merrillosphaera migulae W.R.Shaw 1922  
Former name  
Common name Green alga ; Volvocine alga  
Locality (Date of collection) Kisofukushima, Nagano, Japan (1986-08-27)  
Latitude / Longitude  
Habitat (Isolation source) Freshwater (Paddy water)  
History < Ogasawara, Yoshikazu  
Isolator (Date of isolation) Ogasawara, Yoshikazu (1986-08-27)  
Identified by Ogasawara, Yoshikazu  
State of strain Subculture; Unialgal; Clonal; Axenic[2018 Feb]  
Culture condition
(Preculture condition)
Medium:  MG  
Temperature:  23 C
Light intensity:  27-31 µmol photons/m2/sec, L/D cycle:  10L:14D
Duration:  1 M  
Gene information 18S rRNA ( LC086364 ) , ITS1-5.8S-ITS2 ( AB592344 ) , atpB ( AB086173 ) , psaA ( AB086175 AB086176 ) , psaB ( AB086177 ) , psbC ( AB086178 ) , rbcL ( AB086174 )  
Cell size (min - max)  
Organization Colonial; Flagellate 
Characteristics Phototaxis ; Homothallic  
Other strain no.  
Remarks Fragile species to transportation stresses; Read and agree "How to order 4.1"; Axenic 
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

Nakada, T., Tsuchida, Y., Tomita, M. 2019 Improved taxon sampling and multigene phylogeny of unicellular chlamydomonads closely related to the colonial volvocalean lineage Tetrabaenaceae-Goniaceae-Volvocaceae (Volvocales, Chlorophyceae). Mol. Phylogenet. Evol., 130 1-8.
Keywords: Alga; Chlamydomonas; Colony evolution; Multigene phylogeny; Vitreochlamys; Zoosporangium
Strain(s): 4184374564604745415445455645665695715776546667217257287357378678798808828838871362185824622567338333884241424242434244424542464247424842494250425142524253425442554256 
PubMed: 30266459
DOI: 10.1016/j.ympev.2018.09.013

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

Nakada, T. 2018 Methods for supporting cover slip during light microscopy of unfixed microalgae, using clothing fibers or adhesive tapes. Jpn. J. Phycol. (Sôrui), 66, 157-163 (in Japanese with English summary).
Keywords: adhesive tape; chemical fiber; light microscopy; microalgae; slide preparation; unfixed cells
Strain(s): 5441849 

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 

Nakada, T., Ito, T., Tomita, M. 2016 18S ribosomal RNA gene phylogeny of a colonial volvocalean lineage (Tetrabanaceae-Goniaceae-Volvocaceae, Volvocales, Chlorophyceae) and its close relatives. J. Jpn. Bot., 91, 345-354.
Keywords: 18S rRNA; colonial; green algae; molecular phylogeny; unicellular; Volvocales
Strain(s): 4184564604745415445455645665716546667217257287357378678778798808818828831362224222462266256733884126 

Nozaki, H., Ott, F. D., Coleman, A. W. 2006 Morphology, molecular phylogeny and taxonomy of two new species of Pleodorina (Volvocaceae, Chlorophyceae). J. Phycol., 42, 1072-1080.
Keywords: colonial Volvocales; molecular phylogeny; morphology; Pleodorina starrii sp. nov.; Pleodorina thompsonii sp. nov.; taxonomy
Strain(s): 4564605415445776667207217227247257287307317327347357368638658668678688698728918921362136341264127 
DOI: 10.1111/j.1529-8817.2006.00255.x

Nozaki, H. 2003 Origin and evolution of the genera Pleodorina and Volvox (Volvocales). Biologia, Bratislava, 58, 425-431.
Keywords: colonial Volvocales; evolution; molecular phylogeny; Pleodorina; sexual reproduction; Volvox
Strain(s): 544 

Mori, F., Erata, M., Watanabe, M. M. 2002 Cryopreservation of cyanobacteria and green algae in the NIES-Collection. Microbiol. Cult. Coll., 18, 45-55.
Keywords: cryopreservation; cyanobacteria; green algae; FDA staining method; NIES-Collection
Strain(s): 192122232425262728293031323334353637383940414445465051525354555658596061626364656667686970737475767778798081878990919293949596979899100101102103104105106107108109110111112119120122123125127128129130131132133134135137138139144147151152153154155156157158159160162163164165166167168170171172173174175176177178179180181182183185186187188189191192193194197198199200201202203204205206207208209210211212213214215216217224226227228229230231232241242243244245246248257259261262263266267268287288289290294295297298299300301302303305306308309310312313329334337338339340341342349351359360361362375378379380382384385390394396397398415416418419421422423424425426427428429430431432433434436437438439440446447448449450451452453454455456457458459460464468469474478479480481503504505506507509510512514515522523524527528529530531532536537538539540541542543544545546564565566567568569570571572573574575576577578579580581582583584585592593594595596597598604610628630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667672685686687688689690691692693694717718719720721722723724725726727728729 

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