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Article

Ubiquity of Euglena mutabilis Population in Three Ecologically Distinct Acidic Habitats in Southwestern Japan

1
Faculty of Environmental Engineering, The University of Kitakyushu, Kitakyushu 808-0135, Japan
2
Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, Fukuoka 819-0395, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Éva Ács
Water 2021, 13(11), 1570; https://doi.org/10.3390/w13111570
Received: 27 April 2021 / Revised: 31 May 2021 / Accepted: 31 May 2021 / Published: 1 June 2021
(This article belongs to the Special Issue Algae: Indices of Water and Ecological Quality)
Three strains of Euglena mutabilis were isolated from sediments in acidic inland water systems (pH = 3.4–4.7), in Southwestern Japan—acid mine drainage in Sensui (Fukuoka), cold sulfidic spring in Bougatsuru (Oita), and a temporal pool in the Ebinokogen volcanic area (Miyazaki). All strains grew well in acidic media at pH 3.07. Phylogenetic analysis among these three strains showed high similarities to plastid SSU and nuclear SSU rRNA gene sequences (99.86% and 99.76%, respectively). They were closely related to the cultured isolates from other highly acidic habitats (pH = 2.0–5.9). Concentration of sulfate, aluminum, calcium, and iron had 7–70 fold of differences among the three studied habitats. Our results imply that the rRNA genes of E. mutabilis have compensated for their low genetic diversity by adapting to a wide pH range, as well as various water chemistry of habitats. View Full-Text
Keywords: acid mine drainage; benthic Euglena; volcanic spring acid mine drainage; benthic Euglena; volcanic spring
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MDPI and ACS Style

Yanagawa, K.; Haraguchi, A.; Yoshitake, K.; Asamatsu, K.; Harano, M.; Yamashita, K.; Ishibashi, J.-i. Ubiquity of Euglena mutabilis Population in Three Ecologically Distinct Acidic Habitats in Southwestern Japan. Water 2021, 13, 1570. https://doi.org/10.3390/w13111570

AMA Style

Yanagawa K, Haraguchi A, Yoshitake K, Asamatsu K, Harano M, Yamashita K, Ishibashi J-i. Ubiquity of Euglena mutabilis Population in Three Ecologically Distinct Acidic Habitats in Southwestern Japan. Water. 2021; 13(11):1570. https://doi.org/10.3390/w13111570

Chicago/Turabian Style

Yanagawa, Katsunori, Akira Haraguchi, Kai Yoshitake, Katsuhiro Asamatsu, Masanari Harano, Kei Yamashita, and Jun-ichiro Ishibashi. 2021. "Ubiquity of Euglena mutabilis Population in Three Ecologically Distinct Acidic Habitats in Southwestern Japan" Water 13, no. 11: 1570. https://doi.org/10.3390/w13111570

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