Strain number NIES-981  
Phylum Cyanophyta  
Class Cyanophyceae  
Scientific name Cyanobium sp.  
Synonym  
Former name Formerly identified as Synechococcus sp., re-identified at NIES by DNA analysis[2016 Apr]  
Common name Blue-green alga ; Cyanobacteria  
Locality (Date of collection) Hoshidate, Iriomote Isl. Okinawa Japan (1999-07-01)  
Latitude / Longitude  
Habitat (Isolation source) Marine (Tidal flat sediment)  
History < Tezuka, Naoaki  
Isolator (Date of isolation) Tezuka, Naoaki (1999-09-**)  
Identified by Re-identified by NIES  
State of strain Cryopreservation; Unialgal; Clonal; Axenic[2015 Dec]  
Culture condition
(Preculture condition)
Medium:  ESM  
Temperature:  20 C
Light intensity:  9-15 µmol photons/m2/sec, L/D cycle:  10L:14D
Duration:  1 M  
Gene information Whole-genome ( LT578417 ) , 16S rRNA ( AF448064 ) , rpoC1 ( AF448085 )  
Cell size (min - max) 1 - 3 μm  
Organization Unicellular 
Characteristics Test strain (Yamagishi et al. 2016) ; Genome decoded strain (Yamaguchi et al. 2016)  
Other strain no. Other strain no. : Hos  
Remarks Cryopreserved; Axenic 
Movie  
Reference
Yamagishi, T., Ota, S., Yamaguchi, H., Koshikawa, H., Tatarazako, N., Yamamoto, H., Kawachi, M. 2019 Ecotoxicological bioassay using marine algae for deep-sea mining. In Environmental Issues of Deep-Sea Mining: Impacts, Consequences and Policy Perspectives, Ed. by Sharma, R., Springer, Cham, 255-271.
Strain(s): 981 
DOI: 10.1007/978-3-030-12696-4_10

Ota, S., Yamaguchi, H., Vanel, F., Fuchida, S., Koshikawa, H., Yamagishi, T., Yamamoto, H., Kawachi, M. 2019 Differential heavy metal sensitivity in seven algal species from the NIES culture collection based on delayed fluorescence assays. Phycol. Res., ,
Strain(s): 98113102670 
DOI: 10.1111/pre.12403

Yamagishi, T., Fuchida, S., Katsumata, M., Horie, Y., Mori, F., Kitayama, A., Kawachi, M., Koshikawa, H., Nozaki, T., Kumagai, H., Ishibashi, J-I., Tatarazako, N. 2018 Evaluation of the toxicity of leaches from hydrothermal sulfide deposits by means of a delayed fluorescence-based bioassay with the marine cyanobacterium Cyanobium sp. NIES-981. Ecotoxicology, 27, 1303–1309.
Keywords: Cyanobium sp.; Deep-sea mining; Delayed fluorescence; Ecotoxicological bioassay; Heavy metal
Strain(s): 981 
PubMed: 30311132
DOI: 10.1007/s10646-018-1989-2

Yamaguchi, H., Shimura, Y., Suzuki, S., Yamagishi, T., Tatarazako, N., Kawachi, M. 2016 Complete genome sequence of Cyanobium sp. NIES-981, a marine strain potentially useful for ecotoxicological bioassays. GenomeA, 4, e00736-16 (article ID).
Strain(s): 981 
PubMed: 27469961
DOI: 10.1128/genomeA.00736-16

Yamagishi, T., Katsumata, M., Yamaguchi, H., Shimura, Y., Kawachi, M., Koshikawa, H., Horie, Y., Tatarazako, N. 2016 Rapid ecotoxicological bioassay using delayed fluorescence in the marine cyanobacterium Cyanobium sp. (NIES-981). Ecotoxicology, 25, 1751-1758.
Keywords: Algal growth inhibition test; Cyanobium sp.; Delayed fluorescence; Marine cyanobacteria
Strain(s): 981 
PubMed: 27633095
DOI: 10.1007/s10646-016-1718-7

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