Strain number NIES-1846  
Phylum Heterokontophyta  
Class Chrysophyceae  
Scientific name Spumella sp.  
Synonym  
Former name  
Common name  
Locality (Date of collection) Namiki Park Namiki, Tsukuba, Ibaraki, Japan (2002-09-11)  
Latitude / Longitude 36.0658721099443 / 140.14219601633027 
Habitat (Isolation source) Freshwater (Pond water)  
History < TKB;  
Isolator (Date of isolation) Yubuki, Naoji (2002-10-06)  
Identified by Yubuki, Naoji  
State of strain Subculture; Unialgal; Clonal; Non-axenic  
Culture condition
(Preculture condition)
Medium:  URO + Wheat  
Temperature:  20 C
Light intensity:  4-5 µmol photons/m2/sec, L/D cycle:  10L:14D
Duration:  1 M  
Gene information Plastid DNA ( AP019363 )  
Cell size (min - max) 13 - 18 μm  
Organization  
Characteristics Phagotrophic ; Planktonic ; Cosmopolitan ; Phagotrophic ; Genome decoded strain (Dorrell et al. 2019)  
Other strain no. Other strain no. : TKB-010 (NY0108)  
Remarks  
Movie  
Reference
Dorrell, R. G., Azuma, T., Nomura, M., Audren de Kerdrel, G., Paoli, L., Yang, S., Bowler, C., Ishii, K.-I., Miyashita, H., Gile, G. H., Kamikawa, R. 2019 Principles of plastid reductive evolution illuminated by nonphotosynthetic chrysophytes. Proc. Natl. Acad. Sci. U. S. A., 116, 6914-6923.
Keywords: heterotrophy; ochrophyte; phylogenomics; dual targeting; protist
Strain(s): 1846 
PubMed: 30872488
DOI: 10.1073/pnas.1819976116

Fukuda, S., Iwamoto, K., Atsumi, M., Yokoyama, A., Nakayama, T., Ishida, K-I., Inouye, I., Shiraiwa, Y. 2014 Global searches for microalgae and aquatic plants that can eliminate radioactive cesium, iodine and strontium from the radio-polluted aquatic environment: a bioremediation strategy. J. Plant Res., 127, 79-89.
Keywords: Algal phytoremediation; Bioaccumulation; Radiopollution; Radionuclide elimination; Radioactive cesium; The Fukushima 1 Nuclear Power Plant accident
Strain(s): 24367115516020323324632933339140541744048750352953153854855358759767872780584385993199510031012101510171031104410451259132613311377138213881411143514391440144114421458172818261831183318401846186218651956213121442146214721502175217621852268232523412352237724122437285428552856285828592860 
PubMed: 24346654
DOI: 10.1007/s10265-013-0596-9

Yubuki, N., Nakayama, T., Inouye, I. 2008 A unique life cycle and perennation in a colorless chrysophyte Spumella sp. J. Phycol., 44, 164-172.
Keywords: cannibalism; Chrysophyceae; colorless chrysophyte; doubling time; growth rate; heterotrophic flagellate
Strain(s): 1846 
PubMed: 27041053
DOI: 10.1111/j.1529-8817.2007.00441.x

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