Strain number NIES-4021  
Phylum Chlorophyta  
Class Chlorophyceae  
Scientific name Volvox sp. Sagami  
Synonym  
Former name  
Common name Green alga ; Volvocine alga  
Locality (Date of collection) Lake Sagami, Kanagawa, Japan (2013-06-14)  
Latitude / Longitude 35.6093 / 139.188 
Habitat (Isolation source) Freshwater (Lake water)  
History < Nozaki, Hisayoshi  
Isolator (Date of isolation) Nozaki, Hisayoshi (2013-06-14)  
Identified by Nozaki, Hisayoshi  
State of strain Subculture; Unialgal; Clonal; Non-axenic[2024 Jul]  
Culture condition
(Preculture condition)
Medium:  AF-6VTAC  
Temperature:  20 C
Light intensity:  20 µmol photons/m2/sec, L/D cycle:  10L:14D
Duration:  1 M  
Gene information ITS1-5.8S-ITS2 ( LC191308 ) , rbcL ( LC191316 ) , psbC ( LC191326 ) , atc1 ( LC818981 )  
Cell size (min - max) 10 - 60 μm  
Organization Colonial; Flagellate 
Characteristics Other water bloom ; Phototaxis ; Endemic to Japan ; Homothallic ; Oogamy ; Haploid life cycle ; Resting zygote forming  
Other strain no. Other strain no. : 13-614-Vx12  
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. 2024 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., Matsuzaki, R., Shimotori, K., Ueki, N., Heman, W., Mahakham, W., Yamaguchi, H., Tanabe, Y., Kawachi, M. 2024 Two species of the green algae Volvox sect. Volvox from the Japanese ancient lake, Lake Biwa. PLoS One, 19, e0310549 (article ID).
Strain(s): 543273627403874402140224258425943364337443446614662 
PubMed: 39312548
DOI: 10.1371/journal.pone.0310549

Nozaki, H., Mahakham, W., Heman, W., Matsuzaki, R., Kawachi, M. 2020 A new preferentially outcrossing monoicous species of Volvox sect. Volvox (Chlorophyta) from Thailand. PLoS One, 15, e0235622 (article ID).
Strain(s): 273627403382338338744021433644324433443444354436 
PubMed: 32614898
DOI: 10.1371/journal.pone.0235622

Nozaki, H., Ueki, N., Isaka, N., Saigo, T., Yamamoto, K., Matsuzaki, R., Takahashi, F., Wakabayashi, K-I., Kawachi, M. 2016 A new morphological type of Volvox from japanese large lakes and recent divergence of this type and V. ferrisii in two different freshwater habitats. PLoS One, 11, e0167148 (article ID).
Strain(s): 273627373987398840214022402340244025402640274028 
PubMed: 27880842
DOI: 10.1371/journal.pone.0167148

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