Strain number NIES-53  
Phylum Streptophyta  
Class Zygnematophyceae  
Scientific name Closterium peracerosum-strigosum-littorale complex  
Former name  
Common name Desmid  
Locality (Date of collection) Katsuta, Ibaraki, Japan (1974-08-**)  
Latitude / Longitude  
Habitat (Isolation source) Freshwater (Paddy water)  
History < Watanabe, Makoto M.  
Isolator (Date of isolation) Watanabe, Makoto M. (1974-08-**)  
Identified by Watanabe, Makoto M.  
State of strain Subculture; Unialgal; Clonal; Axenic[2017 Nov]  
Culture condition
(Preculture condition)
Medium:  C  
Temperature:  15 (20) C
Light intensity:  7-14 (10-17) µmol photons/m2/sec, L/D cycle:  10L:14D
Duration:  3 M (21 D)  
Gene information 18S rRNA ( AB363682 )  
Cell size (min - max)  
Organization Unicellular 
Characteristics Heterothallic: Mating type (+) ; Mating group II A  
Other strain no. Other strain no. : IB-6-8  
Remarks Axenic 
Kawaguchi, Y. W., Tsuchikane, Y., Tanaka, K., Taji, T., Suzuki, Y., Toyoda, A., Ito, M., Watano, Y., Nishiyama, T., Sekimoto, H., Tsuchimatsu, T. 2023 Extensive copy number variation explains genome size variation in the unicellular Zygnematophycean alga, Closterium peracerosum–strigosum–littorale complex. Genome Biol. Evol., 15, evad115 (article ID).
Keywords: gene duplication; dosage compensation; copy number variation; green algae
Strain(s): 53545859626364656826126664319432043214548455045514552 
PubMed: 37348049
DOI: 10.1093/gbe/evad115

Tsuchikane, Y., Kobayashi, H., Kato, M., Watanabe, J., Wu, J. T., Sekimoto, H. 2018 Identification of a new mating group and reproductive isolation in the Closterium peracerosum–strigosum–littorale complex. J. Plant Res., 131, 735–746.
Keywords: Alga; Closterium; Mating group; Reproductive isolation; Sex pheromone; Speciation
Strain(s): 535455646566676826126243194320 
PubMed: 29948484
DOI: 10.1007/s10265-018-1043-8

Tsuchikane, Y., Ito, M., Sekimoto, H. 2008 Reproductive isolation by sex pheromones in the Closterium peracerosum-strigosum-littorale complex (Zygnematales, Charophyceae). J. Phycol., 44, 1197-1203.
Keywords: Closterium; conjugation; pheromone; reproductive isolation; sexual reproduction
Strain(s): 53545859646567686970229261 
PubMed: 27041716
DOI: 10.1111/j.1529-8817.2008.00577.x

Mori, F., Erata, M., Watanabe, M. M. 2002 Cryopreservation of cyanobacteria and green algae in the NIES-Collection. Microbiol. Cult. Coll., 18, 45-55.
Keywords: cryopreservation; cyanobacteria; green algae; FDA staining method; NIES-Collection
Strain(s): 192122232425262728293031323334353637383940414445465051525354555658596061626364656667686970737475767778798081878990919293949596979899100101102103104105106107108109110111112119120122123125127128129130131132133134135137138139144147151152153154155156157158159160162163164165166167168170171172173174175176177178179180181182183185186187188189191192193194197198199200201202203204205206207208209210211212213214215216217224226227228229230231232241242243244245246248257259261262263266267268287288289290294295297298299300301302303305306308309310312313329334337338339340341342349351359360361362375378379380382384385390394396397398415416418419421422423424425426427428429430431432433434436437438439440446447448449450451452453454455456457458459460464468469474478479480481503504505506507509510512514515522523524527528529530531532536537538539540541542543544545546564565566567568569570571572573574575576577578579580581582583584585592593594595596597598604610628630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667672685686687688689690691692693694717718719720721722723724725726727728729 

Watanabe, M. M. & Ichimura, T. 1982 Biosystematic studies of the Closterium peracerosum-strigosum-littorale complex. IV. Hybrid breakdown between two closely related groups, Group II-A and Group II-B. Bot. Mag. Tokyo, 95, 241-247.
Keywords: Closterium; fertility; hybrid breakdown; post-zygotic isolating mechanism; viability
Strain(s): 5152536465 
DOI: 10.1007/BF02488536

Watanabe, M. M. & Ichimura, T. 1978 Biosystematic studies of the Closterium peracerosum-strigosum-littorale complex. II. Reproductive isolation and morphological variation among several populations from the Northern Kanto area in Japan. Bot. Mag. Tokyo, 91, 1-10.
Strain(s): 51525354555658596061626364656970261 

Watanabe, M. M. & Ichimura, T. 1978 Biosystematic studies of the Closterium peracerosum-strigosum-littorale complex. III. Degrees of sexual isolation among the three population groups from the Northern Kanto area. Bot. Mag. Tokyo, 91, 11-24.
Strain(s): 51525354555658596061626364656970261 
DOI: 10.1007/BF02489099

Watanabe, M. M. 1977 Biosystematics in Closterium of sexual unicellular green algae and Calothrix and Spirulina of asexual filamentous blue-green algae, with special reference to the analyses of natural populations. Thesis D. Sci., Hokkaido University, 114 pp., 28 tables, 54 figs.
Strain(s): 39454651525354555658596061626364656667686970261262266268 

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