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Volume 15
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10.3390/d15030329
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Article

Introducing Cyanodorina gen. nov. and Cyanodorina ovale sp. nov. (Microcystaceae, Chroococcales), a Novel Coccoid Cyanobacterium Isolated from Caohai Lake in China Based on a Polyphasic Approach

by
Wei Chen
1,
Shuyin Li
2,
Yuanzhao Xu
2,
Ruozhen Geng
3,
Gaofei Song
4,* and
Peiming Ma
1,*
1
Key Laboratory of Ecological Impacts of Hydraulic Projects and Restoration of Aquatic Ecosystem of Ministry of Water Resources, Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences, Wuhan 430079, China
2
Yangtze River Basin Ecological Environment Monitoring and Scientific Research Center, Yangtze River Basin Ecological Environment Supervision and Administration Bureau, Ministry of Ecological Environment, Wuhan 430010, China
3
College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China
4
State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
*
Authors to whom correspondence should be addressed.
Diversity 2023, 15(3), 329; https://doi.org/10.3390/d15030329
Submission received: 4 November 2022 / Revised: 13 February 2023 / Accepted: 15 February 2023 / Published: 23 February 2023
(This article belongs to the Special Issue Diversity and Ecology of Algae in China)
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Abstract

The Chroococcales is one of the least studied cyanobacterial orders comprising the non-baeocyte-producing coccoids cyanobacteria with stacked and fasciculated thylakoids. During a survey of aquatic biodiversity in Caohai Lake in Guizhou Province, China, a coccoid-like cyanobacterium was isolated. It was characterized using a polyphasic approach, based on morphology, electron microscopy, and molecular phylogenetic analyses. This species’ colonies exhibited morphological similarity to those of Microcystis species but differed in their larger colony sizes and widely oval cells. The 16S rRNA gene sequence of this species had the maximum homology, corresponding to 93.10%, to that of the genus Microcystis. The results of 16S rRNA gene threshold value and 16S rRNA phylogenetic analyses confirmed that the studied species belongs to the family Microcystaceae but is phylogenetically distinct from the other species of Microcystaceae. Furthermore, The D1–D1′, Box–B helix, and V3 helix of the 16S–23S ITS region were also different from those previously described in Microcystaceae taxa. Combining the morphological, ecological, and molecular features of the coccoid-like cyanobacterium, we here propose the establishment of the Cyanodorina gen. nov. and the Cyanodorina ovale sp. nov.
Keywords: coccoid cyanobacteria; morphology; phylogeny; 16S rRNA gene; 16S–23S ITS coccoid cyanobacteria; morphology; phylogeny; 16S rRNA gene; 16S–23S ITS

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MDPI and ACS Style

Chen, W.; Li, S.; Xu, Y.; Geng, R.; Song, G.; Ma, P. Introducing Cyanodorina gen. nov. and Cyanodorina ovale sp. nov. (Microcystaceae, Chroococcales), a Novel Coccoid Cyanobacterium Isolated from Caohai Lake in China Based on a Polyphasic Approach. Diversity 2023, 15, 329. https://doi.org/10.3390/d15030329

AMA Style

Chen W, Li S, Xu Y, Geng R, Song G, Ma P. Introducing Cyanodorina gen. nov. and Cyanodorina ovale sp. nov. (Microcystaceae, Chroococcales), a Novel Coccoid Cyanobacterium Isolated from Caohai Lake in China Based on a Polyphasic Approach. Diversity. 2023; 15(3):329. https://doi.org/10.3390/d15030329

Chicago/Turabian Style

Chen, Wei, Shuyin Li, Yuanzhao Xu, Ruozhen Geng, Gaofei Song, and Peiming Ma. 2023. "Introducing Cyanodorina gen. nov. and Cyanodorina ovale sp. nov. (Microcystaceae, Chroococcales), a Novel Coccoid Cyanobacterium Isolated from Caohai Lake in China Based on a Polyphasic Approach" Diversity 15, no. 3: 329. https://doi.org/10.3390/d15030329

APA Style

Chen, W., Li, S., Xu, Y., Geng, R., Song, G., & Ma, P. (2023). Introducing Cyanodorina gen. nov. and Cyanodorina ovale sp. nov. (Microcystaceae, Chroococcales), a Novel Coccoid Cyanobacterium Isolated from Caohai Lake in China Based on a Polyphasic Approach. Diversity, 15(3), 329. https://doi.org/10.3390/d15030329

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