Strain number NIES-4696  
Phylum Rhodophyta  
Class Cyanidiophyceae  
Scientific name Cyanidioschyzon merolae De Luca, Taddei & Varano  
Synonym  
Former name  
Common name Red alga  
Locality (Date of collection) Sardinia Isl., Italy (locality of wild type strain (NIES-1332))  
Latitude / Longitude  
Habitat (Isolation source) Hot spring (NIES-3377)  
History  
Isolator (Date of isolation) Suzuki, Shigekatsu (2024-12-**)  
Identified by  
State of strain Subculture; Unialgal; Clonal; Axenic[2025 Feb]  
Culture condition
(Preculture condition)
Medium:  M-Allen  
Temperature:  37 C
Light intensity:  10-11 µmol photons/m2/sec, L/D cycle:  10L:14D
Duration:  6 M  
Gene information Nuclear DNA (chromosome 1-20) ( AP006483-AP006502 ) , Mitochondrial DNA ( D8986 ) , Plastid DNA ( AB002583 )  
Cell size (min - max)  
Organization Unicellular 
Characteristics Thermophilic (opt. 40-45℃() ; Acidophilic (pH 1.5-2.4) ; Genome decoded strain  
Other strain no. Other strain no. : 10D  
Remarks NIES-4696 is available.; Purified strain from NIES-3377; Axenic 
Movie  
Reference
Mogi, Y., Matsuo, Y., Kondo, Y., Higashiyama, T., Inada, T., Yoshida, Y. 2025 Genome-wide changes of protein translation levels for cell and organelle proliferation in a simple unicellular alga. Proc. Jpn. Acad. Ser. B-Phys. Biol. Sci., 101, 41-53.
Keywords: cell and organelle division; ribosome profiling; mitochondrial nucleoid protein; mitochondrial division protein; Cyanidioschyzon merolae; eukaryote evolvability
Strain(s): 33774696 
PubMed: 39805589
DOI: 10.2183/pjab.101.002

Hirata, R., Mogi, Y., Takahashi, K., Nozaki, H., Higashiyama, Y., Yoshida, Y. 2024 Simple prerequisite of presequence for mitochondrial protein import in the unicellular red alga Cyanidioschyzon merolae. J. Cell Sci., 137, jcs262042 (article ID).
Keywords: Mitochondrial presequence; Mitochondrial protein import; Monomitochondrial eukaryote; Unicellular red alga
Strain(s): 33774696 
PubMed: 38940185
DOI: 10.1242/jcs.262042

Yoshida, C., Akiyama, Y., Iwazumi, K., Osanai, T., Ito, S. 2024 L-Lactate production from carbon dioxide in the red alga Cyanidioschyzon merolae. Algal Res., 80, 103526 (article ID).
Keywords: Anaerobic cultivation; Cyanidioschyzon merolae; Fermentation; Lactate; Microalgae
Strain(s): 33774696 
DOI: 10.1016/j.algal.2024.103526

Fujiwara, T., Hirooka, S., Yamashita, S., Yagisawa, F., Miyagishima, S. 2024 Development of a rapamycin-inducible protein-knockdown system in the unicellular red alga Cyanidioschyzon merolae. Plant Physiol., 196, 77–94.
Strain(s): 33774696 
PubMed: 38833589
DOI: 10.1093/plphys/kiae316

Marchetto, F., Santaeufemia, S., Lebiedzińska-Arciszewska, M., Śliwińska, M. A., Pich, M., Kurek, E., Nazieblo, A., Strawski, M., Solymosi, D., Szklarczyk, M., Bulska, E., Szymański, J., Wierzbicka, M., Allahverdiyeva, Y., Wieckowski, M. R., Kargul, J. 2024 Dynamic adaptation of the extremophilic red microalga Cyanidioschyzon merolae to high nickel stress. Plant Physiol. Biochem., 207, 108365 (article ID).
Keywords: Abiotic stress; Adaptation; Cyanidioschyzon merolae; Heavy metals; Nickel; Photosynthesis and respiration
Strain(s): 223733774696 
PubMed: 38266563
DOI: 10.1016/j.plaphy.2024.108365

Seger, M., Mammadova, F., Villegas-Valencia, M., de Freitas, B. B., Chang, C. R. S., Isachsen, I., Hemstreet, H., Abualsaud, F., Boring, M., Lammers, P. J., Lauersen, K. J. 2023 Engineered ketocarotenoid biosynthesis in the polyextremophilic red microalga Cyanidioschyzon merolae 10D. Metab. Eng. Commun., 17, e00226 (article ID).
Keywords: Microalgae; red algae; ketocarotenoids; Cyanidiophyceae; polyextremophiles; astaxanthin
Strain(s): 33774696 
PubMed: 37449053
DOI: 10.1016/j.mec.2023.e00226

Hamana, K., Furuchi, T., Hayashi, H., Uemura, T., Niitsu, M. 2023 Additional polyamine analysis of the algae belonging to the phyla Glaucophyta, Rhodophyta and Chlorophyta. ─Polyamine analysis of algae V─ Microb. Resour. Syst., 39, 33-40.
Keywords: alga; Chlorophyta; Glaucophyta; polyamine; Rhodophyta
Strain(s): 226250254550551626129813321703183621372163216421652166225223532894337736453867389138924107439044524696 

Wong, D. K., Grisdale, C. J., Slat, V. A., Rader, S. D., Fast, N. M. 2023 The evolution of pre-mRNA splicing and its machinery revealed by reduced extremophilic red algae. J. Eukaryot. Microbiol., 70, e12927 (article ID).
Keywords: Cyanidiales; intron; spliceosome; transcriptome
Strain(s): 13324696 
PubMed: 35662328
DOI: 10.1111/jeu.12927

Chiang, Y.-H., Huang, Y.-J., Fu, H.-Y. 2022 Identifcation of multiple nonphotochemical quenching processes in the extremophilic red alga Cyanidioschyzon merolae. Photosynth. Res., 154, 125–141.
Keywords: Energy spillover; Energetic decoupling; Functional antenna size
Strain(s): 33774696 
PubMed: 36155877
DOI: 10.1007/s11120-022-00963-2

Miyagishimi, S., Tanaka, K. 2021 The unicellular red alga Cyanidioschyzon merolae—The simplest model of a photosynthetic eukaryote. Plant Cell Physiol., 62, 926–941.
Keywords: Cyanidiales; Cyanidioschyzon merolae; Photosynthetic eukaryotes; Red algae
Strain(s): 33774696 
PubMed: 33836072
DOI: 10.1093/pcp/pcab052

Yoshida, C., Murakami, M., Niwa, A., Takeya, M., Osanai, T. 2021 Efficient extraction and preservation of thermotolerant phycocyanins from red alga Cyanidioschyzon merolae. J. Biosci. Bioeng., 131, 161-167.
Keywords: Cyanidioschyzon merolae; Microalgae; Phycocyanin; Protein extraction; Red algae
Strain(s): 33774696 
PubMed: 33109478
DOI: 10.1016/j.jbiosc.2020.09.021

Liu, S.-L., Chiang, Y.-R., Yoon, H. S., Fu, H.-Y. 2020 Comparative genome analysis reveals Cyanidiococcus gen. nov., a new extremophilic red algal genus sister to Cyanidioschyzon (Cyanidioschyzonaceae, Rhodophyta). J. Phycol., 56, 1428-1442.
Strain(s): 337743904696 
DOI: 10.1111/jpy.13056

Szewczyk, S., Abram, M., Białek, R., Haniewicz, P., Karolczak, J., Gapiński, J., Kargul, J., Gibasiewicz, K. 2020 On the nature of uncoupled chlorophylls in the extremophilic photosystem I-light harvesting I supercomplex. Biochim. Biophys. Acta-Bioenerg., 1861, 148136 (article ID).
Keywords: Biosolar photovoltaic cells; Photosystem I; Light harvesting complex I; Uncoupled chlorophylls; Time-resolved fluorescence; Fluorescence correlation spectroscopy
Strain(s): 13324696 
PubMed: 31825811
DOI: 10.1016/j.bbabio.2019.148136

Abram, M., Białek, R., Szewczyk, S., Karolczak, J., Gibasiewicz, K., Kargul, J. 2020 Remodeling of excitation energy transfer in extremophilic red algal PSI-LHCI complex during light adaptation. Biochim. Biophys. Acta-Bioenerg., 1861, 148093 (article ID).
Keywords: Photosystem I; Light harvesting complex I; Time-resolved fluorescence; Extremophilic red alga Cyanidioschyzon merolae; Light adaptation; Red chlorophylls
Strain(s): 13324696 
PubMed: 31669460
DOI: 10.1016/j.bbabio.2019.148093

Zienkiewicz, M., Krupnik, T., Drożak, A., Kania, K. 2019 PEG-mediated, stable, nuclear and chloroplast transformation of Cyanidioschizon merolae. Bio-protocol, 9, e3355 (article ID).
Strain(s): 133233774696 
DOI: 10.21769/BioProtoc.3355

Krupnik, T., Wasilewska, W., Drożak, A., Romanowska, E., Zienkiewicz, M. 2018 Application of chloroplast promoters of Cyanidioschyzon merolae for exogenous protein expression. Algae, 33, 351-358.
Keywords: chloroplast promoters; chloroplast transformation; Cyanidioschyzon merolae
Strain(s): 13324696 
DOI: 10.4490/algae.2018.33.12.5

Zienkiewicz, M., Krupnik, T., Drożak, A., Golke, A., Romanowska, E. 2017 Transformation of the Cyanidioschyzon merolae chloroplast genome: prospects for understanding chloroplast function in extreme environments. Plant Mol. Biol., 93, 171-183.
Keywords: Stable chloroplast transformation; Cyanidioschyzon merolae; Chloramphenicol acetyltransferase; PEG; Biolistic bombardment
Strain(s): 13324696 
PubMed: 27796719
DOI: 10.1007/s11103-016-0554-8

Rahman, D. Y, Sarian, F. D., van WijkM, A., Martinez-Garcia, M., van der Maarel, M. J. E. C. 2017 Thermostable phycocyanin from the red microalga Cyanidioschyzon merolae, a new natural blue food colorant. J. Appl. Phycol., 29, 1233–1239.
Keywords: Food colorant; Phycocyanin; Pigments; Red microalga; Cyanidioschyzon merolae
Strain(s): 13324696 
PubMed: 28572707
DOI: 10.1007/s10811-016-1007-0

Loganathan, N., Tsai, YC., Mueller-Cajar, O. 2016 Characterization of the heterooligomeric red-type rubisco activase from red algae. Proc. Nati. Acad. Sci. U. S. A., 113, 14019-14024.
Keywords: rubisco; activase; photosynthesis; AAA+ proteins; red algae
Strain(s): 13324696 
PubMed: 27872295
DOI: 10.1073/pnas.1610758113

Takaichi, S., Yokoyama, A., Mochimaru, M., Uchida, H., Murakami, A. 2016 Carotenogenesis diversification in phylogenetic lineages of Rhodophyta. J. Phycol., 52, 329-338.
Keywords: alloxanthin; antheraxanthin; carotenogenesis; carotenoid; Cryptophyta; Glaucophyta; lutein; red algae; Rhodophyta; Zeaxanthin
Strain(s): 6977007051332213721384696 
PubMed: 27273528
DOI: 10.1111/jpy.12411

Krupnik, T., Kotabová, E., van Bezouwen, L. S., Mazur, R., Garstka, M., Nixon, P. J., Barber, J., Kaňa, R., Boekema, E. J., Kargul, J. 2013 A reaction center-dependent photoprotection mechanism in a highly robust photosystem II from an extremophilic red alga, Cyanidioschyzon merolae. J. Biol. Chem., 288, 23529-23542.
Strain(s): 13324696 
DOI: 10.1074/jbc.M113.484659

Miyagishima, S., Suzuki, K., Okazaki, K., Kabeya, Y. 2012 Expression of the nucleus-encoded chloroplast division genes and proteins regulated by the algal cell cycle. Mol. Biol. Evol., 29, 2957-2970.
Keywords: cell cycle; chloroplast division; endosymbiosis; endosymbiotic gene transfer
Strain(s): 2964845471332217033774696 
PubMed: 22490821
DOI: 10.1093/molbev/mss102

Takaichi, S. 2011 Carotenoids in algae: distributions, biosyntheses and functions. Mar. Drugs, 9, 1101-1118.
Keywords: algal phylogeny; biosynthesis of carotenoids; distribution of carotenoids; function of carotenoids; pigment-protein complex
Strain(s): 144133233774696 
PubMed: 21747749
DOI: 10.3390/md9061101

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