Strain number NIES-2498  
Phylum Heliozoa  
Class Centrohelea  
Scientific name Raphidiophrys contractilis Kinoshita et al.  
Synonym  
Former name  
Common name  
Locality (Date of collection) Shukkeien Park Naka-ku, Hiroshima Hiroshima Japan (1995-**-**)  
Latitude / Longitude 34.4 / 132.46722222 
Habitat (Isolation source) Brackish water  
History < Suzaki, Toshinobu  
Isolator (Date of isolation) Suzaki, Toshinobu (1995-**-**)  
Identified by Suzaki, Toshinobu  
State of strain Subculture; Axenic[2018 Feb]; Mixed (Chlorogonium capillatum (NIES-3374) or Gungnir neglectum (NIES-439) as food)  
Culture condition
(Preculture condition)
Medium:  Helio  
Temperature:  20 C
Light intensity:  4-5 µmol photons/m2/sec, L/D cycle:  10L:14D
Duration:  21 D  
Gene information  
Cell size (min - max)  
Organization  
Characteristics  
Other strain no. Other strain no. : HSR  
Remarks Axenic 
Movie  
Reference
Khan, S. M. M. K., Yoshimura, C., Arikawa, M., Omura, G., Nishiyama, S., Suetomo, Y., Kakuta, S., Suzaki, T. 2006 Axopodial degradation in the heliozoon Raphidiophrys contractilis: a novel bioassay system for detecting heavy metal toxicity in an aquatic environment. Environ. Sci., 13, 193-200.
Strain(s): 2498 
PubMed: 17095991

Khan, S. M. M. K., Arikawa, M., Suzaki, T. 2005 Toxic effect of heavy metal ions on the axopodia of the heliozoon Raphidiophrys contractilis. Jpn. J. Protozool., 38, 44-45.
Strain(s): 2498 

Khan, S. M. M. K., Arikawa, M., Omura, G., Suetomo, Y., Kakuta, S., Suzaki, T. 2003 Axopodial contraction in the heliozoon Raphidiophrys contractilis requires extracellular Ca2+. Zool. Sci., 20, 1367-1372.
Keywords: contraction; microtubules; contractile tubules; heliozoa; calcium
Strain(s): 2498 
DOI: 10.2108/zsj.20.1367

Sakaguchi, M., Suzuki, T., Khan, S. M. M. K. Hausmann, K. 2002 Food capture by kinetocysts in the heliozoon Raphidiophrys contractilis. Eur. J. Protistol., 37, 453-458.
Keywords: Exocytosis; Extrusome; Heliozoa; Kinetocyst
Strain(s): 24983374 
DOI: 10.1078/0932-4739-00847

Kinoshita, E., Suzaki, T., Sugiyama, M., Shigenaka, Y. 1995 Ultrastructure and rapid axopodial contraction of a heliozoan, Raphidiophyrys contractilis sp. nov. J. Eucaryot. Microbiol., 42, 283-288.
Keywords: Contraction; Heliozoa; microtubule pattern; new species; Raphidiophyrys; silicic scale; X-ray microanalysis
Strain(s): 24983374 
DOI: 10.1111/j.1550-7408.1995.tb01581.x

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