Strain number NIES-4026  
Phylum Chlorophyta  
Class Chlorophyceae  
Scientific name Volvox sagami Nozaki & N.Ueki  
Synonym  
Former name Formerly identified as Volvox sp. Sagami, named based on Nozaki et al. 2026[2026 June]  
Common name Green alga ; Volvocine alga  
Locality (Date of collection) Miya-ike Pond, Otsu, Shiga, Japan (2015-06-29)  
Latitude / Longitude 35.136197 / 135.907338 
Habitat (Isolation source) Freshwater (Pond water)  
History < Nozaki, Hisayoshi  
Isolator (Date of isolation) Nozaki, Hisayoshi (2015-06-30)  
Identified by Nozaki, Hisayoshi  
State of strain Subculture; Unialgal; Clonal; Axenic[2018 Mar]  
Culture condition
(Preculture condition)
Medium:  AF-6VTAC  
Temperature:  20 C
Light intensity:  23 µmol photons/m2/sec, L/D cycle:  10L:14D
Duration:  1 M  
Gene information ITS1-5.8S-ITS2 ( LC191315 ) , rbcL ( LC191323 ) , psbC ( LC191333 )  
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. : 15-630-VVx4  
Remarks Fragile species to transportation stresses; Read and agree "How to order 4.1"; Axenic 
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-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-4029
Volvox ferrisii Green alga ; Volvocine alga   Freshwater (Pond water) Phototaxis ; Homothallic ; Monoecious ; Oogamy ; Resting zygote forming  
NIES-694
Volvox aureus Green alga ; Volvocine alga   Freshwater (Stream water) Other water bloom ; Phototaxis ; Homothallic ; Dioecious ; Oogamy  
NIES-732
Volvox carteri Green alga ; Volvocine alga   Freshwater (Paddy soil) Phototaxis ; Authentic strain ; Heterothallic ; Dioecious ; Oogamy ; Female ; Crosses with NIES-733  
NIES-241
Volvox aureus Green alga ; Volvocine alga   Freshwater (Pond sediment) Phototaxis ; Fertility lost  
Related strain information
(Used in same reference)
Strain number Scientific name Common name Habitat (Isolation source) Characteristics
NIES-4023
Volvox sagami Green alga ; Volvocine alga   Freshwater (Lake water) Other water bloom ; Phototaxis ; Endemic to Japan ; Homothallic ; Oogamy ; Haploid life cycle ; Resting zygote forming  
NIES-4028
Volvox sagami Green alga ; Volvocine alga   Freshwater (Lake water) Other water bloom ; Phototaxis ; Endemic to Japan ; Homothallic ; Monoecious  
NIES-3987
Volvox ferrisii Green alga ; Volvocine alga   Freshwater (Paddy soil) Mixotrophic ; Phototaxis ; Homothallic ; Monoecious ; Oogamy ; Resting zygote forming ; Life cycle (Isaka et al. 2012, J. Phycol.)  
NIES-4662
Volvox sagami Green alga ; Volvocine alga   Freshwater (Water) Phototaxis ; Endemic to Japan ; Homothallic ; Monoecious  
NIES-4593
Volvox sagami Green alga ; Volvocine alga   Freshwater (Reservoir water) Phototaxis ; Endemic to Japan ; Homothallic ; Monoecious  
Reference
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

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, 65, 189-198.
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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