A big image opens when the thumbnail is clicked.(nies-0653.jpg)
Strain number NIES-653  
Phylum Chlorophyta  
Class Chlorophyceae  
Scientific name Gonium quadratum Pringsheim ex Nozaki  
Synonym Gonium quadratum E.G.Pringsheim 1959  
Former name  
Common name Green alga  
Locality (Date of collection) Itahari, Nepal (1989-10-**)  
Latitude / Longitude  
Habitat (Isolation source) Freshwater (Paddy soil)  
History < Nozaki, Hisayoshi  
Isolator (Date of isolation) Nozaki, Hisayoshi (1990-04-23)  
Identified by Nozaki, Hisayoshi  
State of strain Subculture; Unialgal; Clonal; Axenic[2018 Mar]  
Culture condition
(Preculture condition)
Medium:  AF-6  
Temperature:  20 C
Light intensity:  9-14 µmol photons/m2/sec, L/D cycle:  10L:14D
Duration:  2 M  
Gene information atpB ( AB014019 ) , rbcL ( D63438 ) , psaA ( AB044243 ) , psaB ( AB044464 ) , psbC ( AB044522 AB044523 )  
Cell size (min - max)  
Organization Colonial; Flagellate 
Characteristics Phototaxis ; Heterothallic ; Isogamous ; Mating type (+) ; Crosses with NIES-652 ; F1 strains (NIES-647, 648, 649, 650)  
Other strain no. Other strain no. : 90-423-2  
Remarks 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

Nozaki, H., Mori, F., Tanaka, Y., Matsuzaki, R., Yamaguchi, H., Kawachi, M. 2022 Cryopreservation of vegetative cells and zygotes of the multicellular volvocine green alga Gonium pectorale. BMC Microbiol., 22, 103 (article ID).
Strain(s): 2882904684695695706456466526536546557378518528852261226341214499450045014502 
PubMed: 35421922
DOI: 10.1186/s12866-022-02519-9

Lindsey, C. R., Rosenzweing, F., Herron, M. D. 2021 Phylotranscriptomics points to multiple independent origins of multicellularity and cellular differentiation in the volvocine algae. BMC Biol., 19, 182 (article ID).
Keywords: Phylotranscriptomics; Volvocine algae; Green algae; Phylogeny; Multicellularity
Strain(s): 41845645846056456656857265365471771972072573673785185689028633383 
DOI: 10.1101/2021.03.16.435725

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 

Hamaji, T., Ferris, J. P., Nishii, I., Nishimura, Y., Nozaki, H. 2013 Distribution of the sex-determining geneMID and molecular correspondence of mating types within the isogamous genus Gonium (Volvocales, Chlorophyta). PLoS One, 8, e64385 (article ID).
Strain(s): 6526536546558518521038103917081710171124552457 
PubMed: 23696888
DOI: 10.1371/journal.pone.0064385

Yamada, T., Nakada, T., Miyaji, K., Nozaki, H. 2006 Morphology and molecular phylogeny of Gonium multicoccum (Volvocales, Chlorophyceae) newly found in Japan. J. Jpn. Bot., 81, 139-147.
Keywords: Chlorophyceae; Gonium multicoccum; ITS2; rbcL; Volvocales
Strain(s): 289569572653654851857103817071708170917111713 

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 

Nozaki, H., Onishi, K., Morita, E. 2002 Differences in pyrenoid morphology are correlated with differences in the rbcL genes of members of the Chloromonas lineage (Volvocales, Chlorophyceae). J. Mol. Evol., 55, 414-430.
Keywords: ATP synthase β-subunit (atpB) gene; Chloromonas; gene evolution; large subunit of Rubisco (rbcL) gene; morphological evolution; P700 chlorophyll a-apoprotein A2 (psaB) gene; pyrenoid; Volvocales
Strain(s): 96123144213418421425428432439446447456474522564566567569571574582653732851858861875882883968 
PubMed: 12355262
DOI: 10.1007/s00239-002-2338-9

Nozaki, H., Misawa, K., Kajita, T., Kato, M., Nohara, S., Watanabe, M. M. 2000 Origin and evolution of the colonial Volvocales (Chlorophyceae) as inferred from multiple, chloroplast gene sequences. Mol. Phylogenet. Evol., 17, 256-268.
Strain(s): 418456460474541545564566569571572574577582653654666720721722724725727728730731732734735736737851854872882884886887888889890893895896898 
PubMed: 11083939
DOI: 10.1006/mpev.2000.0831

Nozaki, H., Ohta, N., Takano, H., Watanabe, M. M. 1999 Reexamination of phylogenetic relationships within the colonial Volvocales (Chlorophyta): an analysis of atpB and rbcL gene sequences. J. Phycol., 35, 104-112.
Keywords: atpB gene; Chlorophyta; Gonium; molecular phylogeny; rbcL gene; Volvocaceae; volvocine series; Volvox
Strain(s): 418456460541564566568569571572574577582653654666720721722724725727728730731732734735736737851852858861882884895 
DOI: 10.1046/j.1529-8817.1999.3510104.x

Nozaki, H., Ito, M., Sano, R., Uchida, H., Watanabe, M. M., Kuroiwa, T. 1995 Phylogenetic relationships within the colonial Volvocales (Chlorophyta) inferred from rbcL gene sequence data. J. Phycol., 31, 970-979.
Keywords: Chlorophyta; Goniaceae; large subunit of ribulose-1,5-bisphosphate carboxylase / oxygenase (rbcL) gene; molecular phylogeny; Tetrabaenaceae; Volvocaceae
Strain(s): 418421456460541564566569571572574577653725731732734735737895 
DOI: 10.1111/j.0022-3646.1995.00970.x

Nozaki, H., Kuroiwa, H., Kuroiwa, T. 1994 Light and electron microscopic characterization of two types of pyrenoids in Gonium (Goniaceae, Chlorophyta). J. Phycol., 30, 279-290.
Keywords: Chlorophyta; electron microscopy; Goniaceae; Gonium pectorale; Gonium quadratum; immunogold electron microscopy; pyrenoid; ribulose-1,5-bisphosphate carboxylase / oxygenase (RuBisCO) taxonomy; thylakoid lamellae
Strain(s): 468653 
DOI: 10.1111/j.0022-3646.1994.00279.x

Nozaki, H. 1993 Asexual and sexual reproduction in Gonium quadratum (Chlorophyta) with a discussion of phylogenetic relationships within the Goniaceae. J. Phycol., 29, 369-376.
Keywords: asexual reproduction; Chlorophyta; Goniaceae; Gonium quadratum; mating papilla; phylogeny; sexual reproduction; zygote germination
Strain(s): 651652653 
DOI: 10.1111/j.0022-3646.1993.00369.x

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