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Issue: Vol. 768 No. 2: 30 Jul. 2026
Type: Article
Published: 2026-07-30
DOI: 10.11646/phytotaxa.768.2.2
Page range: 69-80
Abstract views: 49
PDF downloaded: 3

Mallomonas bessudovae sp. nov. (Chrysophyceae, Synurales)—a new species from Vietnam

Severtsov Institute of Ecology and Evolution; Russian Academy of Sciences; Leninsky Prospect 33; 119071 Moscow; Russia
Institute for Cellular and Intracellular Symbiosis of the Ural Branch of the Russian Academy of Sciences of the Orenburg Federal Research Center RAS; Pionerskaya Street; 11; 460000; Orenburg; Russia
T.I. Vyazemsky Karadag Scientific Station; Natural Reserve of the Russian Academy of Sciences; Nauki street; 24; Kurortnoe; Feodosiya; 298188; Russia
Joint Vietnam-Russia Tropical Science and Technology Research Center; 63 Nguyen Van Huyen; Nghia Do; Ha Noi; 11307; Vietnam
Severtsov Institute of Ecology and Evolution; Russian Academy of Sciences; Leninsky Prospect 33; 119071 Moscow; Russia
Algae Mallomonas section Planae molecular analysis new species scale ultrastructure tropics

Abstract

This study, conducted in a tropical region, investigates species from the section Planae that are morphologically similar to taxa from the Mallomonas matvienkoae / M. pseudomatvienkoae species complex, using electron microscopy and molecular data. Phylogenetic analysis of two algal cultures resolved a distinct clade, separate from any known taxa, in trees based on both SSU rDNA + rbcL cpDNA and ITS1-5.8S-ITS2 rDNA datasets. Based on these results, a new species, Mallomonas bessudovae sp. nov., is described. Data from the study of cultures are supplemented by an analysis of fixed material, which showed that the species is quite widely distributed in Vietnam.

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How to Cite

Gusev, E.S., Ignatenko, M.E., Podunay, Y.A., Tran, H. & Martynenko, N.A. (2026) Mallomonas bessudovae sp. nov. (Chrysophyceae, Synurales)—a new species from Vietnam. Phytotaxa 768 (2): 69–80. https://doi.org/10.11646/phytotaxa.768.2.2