Prototheca miyajii sp. nov., isolated from a patient with systemic protothecosis

International Journal of Systematic and Evolutionary Microbiology
Michiaki MasudaKazuko Nishimura

Abstract

Species of the genus Prototheca are achlorophyllous algae and ubiquitous in nature, and so far, six species have been listed in this genus: Prototheca wickerhamii, Prototheca zopfii, Prototheca blaschkeae, Prototheca cutis, Prototheca stagnora and Prototheca ulmea. A strain of the genus Prototheca, IFM 53848T, was isolated in Japan from a patient with systemic protothecosis and had been designated P. wickerhamii. Our previous study, by using PCR analysis, revealed that its SSU rRNA gene (rDNA) was distinctively larger than that of P. wickerhamii and other species of the genus Prototheca. In this study, molecular analysis showed that the exceptionally large SSU rDNA of IFM 53848T contains four group I introns. The morphology of IFM 53848T was indistinguishable from those of P. wickerhamii or P. cutis, and phylogenetic analyses, based on the sequences of the SSU rDNA exons and the D1/D2 region of the large subunit rDNA, indicated that IFM 53848T was closely related to P. cutis. On the other hand, unlike P. cutis, IFM 53848T failed to assimilate fructose or lysine and grew well at higher temperatures of up to 42 °C. In addition, the nucleotide sequence of the ribosomal internal transcribed spacer and the matrix assisted laser deso...Continue Reading

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Citations

Dec 31, 2016·International Journal of Molecular Sciences·Jayaseelan MurugaiyanUwe Roesler
Mar 28, 2017·The Journal of General and Applied Microbiology·Junta SugiyamaChie Sano
May 24, 2018·Nanomedicine·Tomasz JagielskiAnna M Grudniak
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Apr 11, 2021·Medical Mycology·Takahisa WatanabeMichiaki Masuda
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Nov 19, 2020·Mycopathologia·Michiaki MasudaRui Kano
Aug 7, 2021·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Carlos E FidelisJuliano L Gonçalves

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