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Article

Two New Benthic Diatoms of the Genus Achnanthidium (Bacillariophyceae) from the Hangang River, Korea

by 1,†, 2,†, 1, 1, 3 and 1,4,*
1
Department of Environmental Science, Hanyang University, Seoul 04763, Korea
2
Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup 56212, Korea
3
National Institute of Environmental Research, Incheon 22689, Korea
4
Department of Life Science and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
*
Author to whom correspondence should be addressed.
These authors contributed equally as co-first authors.
https://www.ipni.org/urn:lsid:ipni.org:authors:20045093-1
Diversity 2020, 12(7), 285; https://doi.org/10.3390/d12070285
Received: 25 June 2020 / Revised: 17 July 2020 / Accepted: 20 July 2020 / Published: 21 July 2020
(This article belongs to the Special Issue Taxonomy, Ecology and Biogeography of Diatoms)
Two new benthic freshwater species belonging to the genus Achnanthidium were found in Korea. Achnanthidium ovale sp. nov. and A. cavitatum sp. nov. are described as new species based on light and scanning electron microscopy observations and molecular analyses. Both species are compared with the type material of morphologically similar taxa. Achnanthidium ovale differs from other species belonging to the A. pyrenaicum complex in outline, striation pattern, raphe central endings, and freestanding areolae at the apices. Achnanthidium cavitatum differs from other species in the A. minutissimum complex in outline, broad axial central area in the raphel ess valve, and slit-like areolae near the axial central area. We assessed their molecular characteristics by analyzing nuclear small subunit (SSU) rRNA and chloroplast-encoded rbcL gene sequences. Both the morphological comparison and the SSU and rbcL sequence analyses provide strong evidence to support the recognition of A. ovale and A. cavitatum as new species. View Full-Text
Keywords: Achnanthidium; freshwater; molecular phylogeny; morphology; rbcL; SSU; taxonomy Achnanthidium; freshwater; molecular phylogeny; morphology; rbcL; SSU; taxonomy
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MDPI and ACS Style

Miao, M.; Li, Z.; Hwang, E.-A.; Kim, H.-K.; Lee, H.; Kim, B.-H. Two New Benthic Diatoms of the Genus Achnanthidium (Bacillariophyceae) from the Hangang River, Korea. Diversity 2020, 12, 285. https://doi.org/10.3390/d12070285

AMA Style

Miao M, Li Z, Hwang E-A, Kim H-K, Lee H, Kim B-H. Two New Benthic Diatoms of the Genus Achnanthidium (Bacillariophyceae) from the Hangang River, Korea. Diversity. 2020; 12(7):285. https://doi.org/10.3390/d12070285

Chicago/Turabian Style

Miao, Minzi, Zhun Li, Eun-A Hwang, Ha-Kyung Kim, Hyuk Lee, and Baik-Ho Kim. 2020. "Two New Benthic Diatoms of the Genus Achnanthidium (Bacillariophyceae) from the Hangang River, Korea" Diversity 12, no. 7: 285. https://doi.org/10.3390/d12070285

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