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The generic circumscription of Mrakia and Mrakiella: The proposal of Thomashallia gen. nov.

##article.authors##

  • Taweesak Malimas Microbial Laboratory Biosafety Level-1, 46 M
  • Huong Thi Lan Vu Faculty of Biology and Biotechnology, University of Science, Vietnam National University-HCM City
  • Pattaraporn Yukphan Microbial Diversity and Utilization Team, Thailand Bioresource Research Center (TBRC), National Center for Genetic Engineering and Biotechnology (BIOTEC)
  • Somboon Tanasupawat Faculty of Pharmaceutical Sciences, Chulalongkorn University
  • Yamada, Yuzo Faculty of Agriculture, Shizuoka University (Professor Emeritus)

DOI:

https://doi.org/10.51094/jxiv.387

キーワード:

Mrakia frigida、 Mrakiella cryoconiti、 Thomashallia gen. nov.、 Thomashallia stelviica comb. nov.、 Thomashallia montana comb. nov.

抄録

In the family Mrakiaceae, the type genus Mrakia senseu stricto included five teleomorphic species with the type species,Mrakia frigida. In contrast, the anamorphic genus Mrakiella sensu stricto contained nine species with the type species, Mrakiella cryoconiti. Between the two genera, the completely separated clusters were shown respectively in the phylogenetic tree based on the 28S rRNA gene D1/D2 domain sequences derived from the neighbour-joining method. Between Mrakia frigida and Mrakiella cryoconiti as well as Mrakiella aquatica, the pair-wise sequence similarities were 98.6% and 97.4% (1.2% width) respectively. However, the similarities between Mrakia frigida and the remaining four Mrakia species were extreemely high (99.4 - 100% with 0.6% width). On the other hand, the similarity was relatively low (98.2%) between Mrakiella cryoconiti and Mrakiella aquatica, showing the wide range or the diversity of the anamorphic genus phylogenetically. The teleomorphic genus Thomashallia was newly introduced based on the formation of basidia and basidiospores with the type species, Thomashallia stelviica. The genus Krasilnikovozyma contained four species with the type species, Krasilnikovozyma curviuscula. Thus, the three teleomorphic genera were respectively taxonomic homogeneous-natured, and the three were characteristic of Q-8.   

 

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著者の経歴

Taweesak Malimas、Microbial Laboratory Biosafety Level-1, 46 M

He is a resaerch staff of Microbial Laboratory Biosafety Level-1, 46 M.

Huong Thi Lan Vu、Faculty of Biology and Biotechnology, University of Science, Vietnam National University-HCM City

She is a researdh staff of Faculty of Biology and Biotechnology, University of Science, Vietnam National University-HCM City.

Pattaraporn Yukphan、Microbial Diversity and Utilization Team, Thailand Bioresource Research Center (TBRC), National Center for Genetic Engineering and Biotechnology (BIOTEC)

She is a research staff of Microbial Diversity and Utilization Team, Thailand Bioresource Research Center (TBRC), National Center for Genetic Engineering and Biotechnology (BIOTEC).

Somboon Tanasupawat、Faculty of Pharmaceutical Sciences, Chulalongkorn University

He is a professor of Faculty of Pharmaceutical Sciences, Chulalongkorn University.

Yamada, Yuzo、Faculty of Agriculture, Shizuoka University (Professor Emeritus)

He is a professor emeritus.

引用文献

Fell, J.W. (2011) Mrakia Y. Yamada & Komagata (1987). In The Yeasts: A Taxonomic Study, 5th edition. vol. 3. Kurtzman, C.P., Fell, J.W., Boekhout, T. (eds), London: Elsevier, pp. 1503-1519.

Fell, J.W. and Margesin, R. (2011) Mrakiella Margesin & Fell (2008). In The Yeasts: A Taxonomic Study, 5th edition. vol. 3. Kurtzman, C.P., Fell, J.W., Boekhout, T. (eds), London: Elsevier, pp. 1847-1852.

Lachance, M.A. (2012) In defense of sexual life cycles: The forma asexualis - an informal proposal. Yeast Newsletter 61: 24-25.

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Margesin, R. and Fell, J.W. (2008) Mrakiella cryoconiti gen, nov., sp. nov., a psychro-philic, anamorphic, basidiomycetous yeast from alpine and arctic habitats. Int J Syst Evol Microbiol 58: 2977-2982.

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Tsuji, M., Tanabe, Y., Vincent, W.F. and Uchida M. (2018) Mrakia arctica sp. nov., a new psychrophilic yeast isolated from an ice island in the Canadian High Arctic. Mycoscience 59: 54-58.

Tsuji, M., Tanabe, Y., Vincent, W.F. and Uchida M. (2019) Mrakia hoshinonis sp. nov., a novel psychrophilic yeast isolated from a retreating glacier on Ellsmere Island in the Canadian High Arctic. Int J Syst Evol Microbiol Doi 10.1099/ijsem.0.003216.

Turchetti, B., Sannino, C., Mezzasoma, A., Zucconi, L., Onofri, S and Bazzini, P. (2020) Mrakia stelviica sp. nov. and Mrakia montana sp. nov., two novel basidiomycetous yeast species isolated from cold environments. Int J Syst Evol Microbiol 70: 4704-4713.

Vu, H.T.L., Yukphan, P., Tanasupawat, S., Mikata, K. and Yamada, Y. (2022a) The revision of Schizosacchromycetaceae. Jxiv (DOI: https://doi.org/10.51094/jxiv.188).

Vu, H.T.L., Yukphan, P., Tanasupawat, S. and Yamada, Y. (2022b) The generic circumscription of Kockiozyma (Lipomycetaceae). Jxiv (DOI: https://doi.org/10.51094/jxiv.221).

Yamada, Y. and Komagata, K. (1987) Mrakia gen. nov., a heterobasidiomycetous yeast genus for the Q8-equipped, self-sporulating organisms, which produce a unicellular metabasidium, formerly classified in the genus Leucosporidium. J Gen Appl Microbiol 33: 455-457.

Yamada, Y., Vu, H.T.L, Yukphan, P. and Tanasupawat, S. (2022a) The revision of Lipomycetaceae. Jxiv (DOI: https://doi.org/10.51094//jxiv.189).

Yamada, Y., Vu, H.T.L, Yukphan, P. and Tanasupawat, S. (2022b) The generic circumscription of Mrakia and related taxa (psychrophilic yeasts). Jxiv (DOI: https://doi.org/10.51094//jxiv.231).

Xin, M.-X. and Zhou, P.-J. (2007) Mrakia psychrophila sp. nov., a new species isolated from Antarctic soil. J Zhejiang Univ Sci B 8: 260-265.

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投稿日時: 2023-05-21 01:39:38 UTC

公開日時: 2023-05-24 00:39:42 UTC

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生物学・生命科学・基礎医学