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The Generic Circumscription of Mrakia and Related Taxa (Psychrophilic Yeasts)

##article.authors##

  • Yuzo Yamada Department of Agricultural Chemistry, Faculty of Agriculture, Shizuoka University
  • Huong Thi Lan Vu Department of Microbiology, Faculty of Biology and Biotechnology, University of Science, Vietnam National University-HCM City
  • Pattaraporn Yukphan BIOTEC Culture Collection (BCC), National Center for Genetic Engineering and Biotechnology (BIOTEC)
  • Somboon Tanasupawat Department of Biochemistry and Microbiology, Faculty of Pharmaceutical Sciences, Chulalongkorn University

DOI:

https://doi.org/10.51094/jxiv.231

Keywords:

Mrakia, Mrakia frigida, Mrakiella, Mrakiella cryoconiti, Krasilnikovozyma curviuscula comb. nov.

Abstract

In the family Mrakiaceae, the type genus Mrakia senseu stricto included the five teleomorphic species with the type species, Mrakia frigida. In contrast, the anamorphic genus Mrakiella sensu stricto did the 11 species with the type species, Mrakiella cryoconiti. Between the two genera, the completely separated clusters were shown in the phylogenetic tree (LSU D1/D2) derived from the MP method. The pair-wise sequence similarity between Mrakia frigida and Mrakiella cryoconiti and Mrakiella aquatica were 98.2% and 96.8%. The calculated pair-wise sequence similarities were 100-99.3% among the five Mrakia species and were 97.1% between Mrakiella cryoconiti and Mrakiella aquatica. The teleomorphic genus Krasilnikovozyma emend. contained the three species with the type species, Krasilnikovozyma curviuscula. Thus, the two teleomorphic genera were taxonomic homogeneous-natured, and the three were characteristic of Q-8.   

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Submitted: 2022-12-21 10:22:24 UTC

Published: 2022-12-23 08:05:41 UTC — Updated on 2022-12-26 02:39:57 UTC

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Reason(s) for revision

In the anamorphic genus Mrakiella, two teleomorphic species were found. It is of interest. The two were mentioned in the text. The teleomorphic new genus is able to be introduced for the species.
Section
Biology, Life Sciences & Basic Medicine

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Copyright (c) 2022 Yuzo Yamada
Huong Thi Lan Vu
Pattaraporn Yukphan
Somboon Tanasupawat

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