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Issue: Vol. 681 No. 2: 13 Jan. 2025
Type: Article
Published: 2025-01-13
DOI: 10.11646/phytotaxa.681.2.4
Page range: 186-198
Abstract views: 62
PDF downloaded: 8

Molecular investigation of Nupela mongolica sp. nov. (Bacillariophyceae) with the description of the family Nupelaceae fam. nov.

Timiryazev Institute of Plant Physiology RAS, 35 Botanicheskaya St., 127276 Moscow, Russia
Timiryazev Institute of Plant Physiology RAS, 35 Botanicheskaya St., 127276 Moscow, Russia
Timiryazev Institute of Plant Physiology RAS, 35 Botanicheskaya St., 127276 Moscow, Russia
Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, 152742 Borok, Russia
Department of Biology, National University of Mongolia, 14200 Ulaanbaatar, Mongolia
Timiryazev Institute of Plant Physiology RAS
new family Nupelaceae Nupela new species Mongolia molecular investigation morphology Algae

Abstract

A new species of the genus Nupela, N. mongolica sp. nov., is described from Davaa Lake, Mongolia. The new species has been studied in LM, SEM and TEM, illustrating the unique structure of the areolae that is characteristic for this genus. According to the molecular analysis, N. mongolica sp. nov. forms an independent branch within the clade that includes other species of Nupela. The genus Nupela was originally placed in the suborder Neidiineae with an unclear position within the suborder due to its unique morphology; later it was included in the family Brachysiraceae despite the differences between Nupela and Brachysira. Molecular data show that strains of Nupela form a separate clade that is not closely related to other genera. Based on the distinct morphological structure of areolae in Nupela that is not present in any other pennate diatoms and the separate position of Nupela species on the phylogenetic tree, a new family Nupelaceae fam. nov. is suggested to accommodate this genus.

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