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Issue: Vol. 681 No. 3: 15 Jan. 2025
Type: Article
Published: 2025-01-15
DOI: 10.11646/phytotaxa.681.3.3
Page range: 277-289
Abstract views: 35
PDF downloaded: 2

Paraplaconeis dorofeyukae sp. nov. (Cymbellales, Bacillariophyceae)—a new species from Mongolia, described based on molecular and morphological investigations

K.A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., Moscow, 127276, Russia. Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1, building 12, Moscow, 119234, Russia.
K.A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., Moscow, 127276, Russia
K.A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., Moscow, 127276, Russia
Department of Biology, School of Arts and Sciences, National University of Mongolia, Ulaanbaatar, 14201, Mongolia
Scientific and Educational Center for Environmental Science and Biotechnology, Derzhavin Tambov State University, 33, Internatsionalnaya St., Tambov, Tambov, 392020, Russia
K.A. Timiryazev Institute of Plant Physiology RAS, IPP RAS, 35 Botanicheskaya St., Moscow, 127276, Russia
Cymbellales Paraplaconeis new species morphology molecular analysis phylogeny Mongolia Algae

Abstract

An unknown species of the diatom genus Paraplaconeis was discovered during a field study of freshwater environments in Central Mongolia. In the course of further study, two monoclonal strains were acquired for the unknown species. The strains were utilized for molecular-genetic analysis on SSU rRNA and rbcL genes. As a result of the molecular investigation and careful morphological examination of valve structure with light and scanning electron microscopy, we propose the description of a new species—Paraplaconeis dorofeyukae sp. nov.—in this article. The new species is morphologically compared to similar taxa from the Paraplaconeis placentula group. Paraplaconeis dorofeyukae sp. nov. can be distinguished from related species by a combination of valve dimensions, morphology of apices and central area, and external valve ultrastructure.

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