Strain number NIES-4536  
Phylum Chlorophyta  
Class Chlorophyceae  
Scientific name Volvox rousseletii G.S.West  
Synonym  
Former name  
Common name Green alga ; Volvocine alga  
Locality (Date of collection) Lake Tsukui, Midori-ku, Sagamihara, Kanagawa, Japan (2019-07-04)  
Latitude / Longitude 35.5885322 / 139.2718239 
Habitat (Isolation source) Freshwater (Reservoir water)  
History < Yamagishi, Shion; Nozaki, Hisayoshi  
Isolator (Date of isolation) Yamagishi, Shion (2019-07-04)  
Identified by Yamagishi, Shion  
State of strain Subculture; Unialgal; Clonal; Non-axenic  
Culture condition
(Preculture condition)
Medium:  AF-6  
Temperature:  21 C
Light intensity:  22-25 µmol photons/m2/sec, L/D cycle:  10L:14D
Duration:  21 D  
Gene information ITS1-5.8S-ITS2 ( LC699257 )  
Cell size (min - max)  
Organization Colonial; Flagellate 
Characteristics Phototaxis ; Dioecious ; Heterothallic ; Female  
Other strain no. Other strain no. : 2019-0704-Vx5  
Remarks Fragile species to transportation stresses; Read and agree "How to order 4.1" 
Movie  
Related strain information
(Large number of orders and same genus or species)
Related strain information
(Whose relevance due to simultaneous purchases and other information is inferred by AI)
Strain number Scientific name Common name Habitat (Isolation source) Characteristics
NIES-397
Volvox carteri Green alga ; Volvocine alga   Freshwater (Paddy water) Phototaxis ; Heterothallic ; Female ; Crosses with NIES-398  
NIES-398
Volvox carteri Green alga ; Volvocine alga   Freshwater (Paddy water) Phototaxis ; Heterothallic ; Male ; Crosses with NIES-397  
NIES-541
Volvox aureus Green alga ; Volvocine alga   Freshwater (Sediment) Phototaxis  
NIES-3780
Volvox africanus Green alga ; Volvocine alga   Freshwater (Lake water) Phototaxis ; Homothallic ; Monoecious with male ; Oogamy ; F1 strain (NIES-3784) ; Genome decoded strain (Yamamoto et al. 2021)  
NIES-580
Volvox carteri Green alga ; Volvocine alga   Freshwater (Paddy soil) Phototaxis ; Heterothallic ; Dioecious ; Oogamy ; Female ; Crosses with NIES-581  
Related strain information
(Used in same reference)
Strain number Scientific name Common name Habitat (Isolation source) Characteristics
NIES-4025
Volvox sp. Sagami Green alga ; Volvocine alga   Freshwater (Lake water) Other water bloom ; Phototaxis ; Endemic to Japan ; Homothallic ; Oogamy ; Haploid life cycle ; Resting zygote forming  
NIES-4661
Volvox biwakoensis Green alga ; Volvocine alga   Freshwater (Lake water) Phototaxis ; Endemic to Japan ; Homothallic ; Monoecious  
NIES-460
Eudorina illinoisensis Green alga   Freshwater (Paddy soil) Phototaxis ; Heterothallic ; Mating type (male) ; Crosses with NIES-459  
NIES-891
Volvox aureus Green alga ; Volvocine alga   Freshwater (Lake water) Phototaxis  
NIES-851
Gonium octonarium Green alga   Phototaxis  
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., Takahashi, K., Yamamoto, K., Suzuki, S., Ootsuki, R., Kawachi, M., Tanabe, Y., Ueki, N. 2026 Molecular and morphological delineations of two homothallic monoicous species, Volvox sagami sp. nov. and V. ferrisii (Volvocales, Chlorophyceae) in Japan. Phycologia, ,
Keywords: Chlorophyta; nuclear genes phylogeny; reproductive isolation; sexual reproduction; Taxonomyvol; vocine algae
Strain(s): 2736273727393987398840214022402640294465453445364537459346614662 
DOI: 10.1080/00318884.2026.2683158

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