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Issue: Vol. 737 No. 4: 16 Jan. 2026
Type: Article
Published: 2026-01-16
DOI: 10.11646/phytotaxa.737.4.5
Page range: 243-253
Abstract views: 52
PDF downloaded: 5

Jaagichlorella terrestris sp. nov. (Trebouxiophyceae, Chlorophyta)—a new species from tropical forest in Vietnam

Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, 33, Leninsky Prospekt, Moscow 119071, Russia; Joint Vietnam-Russia Tropical Science and Technology Research Center, Southern branch, Ho Chi Minh City, 740500, Vietnam
Institute of Biology Komi Science Center Ural Branch Russian Academy of Science, 28, Kommunisticheskaya St., Syktyvkar, 167982, Russia
T. I. Vyazemsky Karadag Scientific Station—Nature Reserve of Russian Academy of Sciences Branch of A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, 24, Nauki Street, Feodosia, Kurortnoye, 298188, Russia
Joint Vietnam-Russia Tropical Science and Technology Research Center, Southern branch, Ho Chi Minh City, 740500, Vietnam
Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, 33, Leninsky Prospekt, Moscow 119071, Russia; Joint Vietnam-Russia Tropical Science and Technology Research Center, Southern branch, Ho Chi Minh City, 740500, Vietnam; Komarov Botanical Institute of the Russian Academy of Sciences, 2, St. Professor Popov, St. Petersburg, 197022, Russia
Jaagichlorella molecular studies soil biofilm Unicellular green algae Algae

Abstract

The genus Jaagichlorella Reisigl (Watanabeales, Trebouxiophyceae) was described in 1964 and revised in 2019. It includes unicellular coccoid green algae. Currently, the genus encompasses ten species and two varieties. The species from this genus inhabit different environments: freshwater, marine and as epiphytes of different natural and artificial substrates. Here, we describe Jaagichlorella terrestris sp. nov. isolated from soil biofilm from tropical forest in Cát Tiên National Park (Vietnam). A polyphasic approach combining morphological analysis, phylogenetic reconstruction, genetic distance evaluation, and CBC species concept was used to investigate the strains of new species. J. terrestris is related to J. sphaerica, but has smaller cells and some molecular differences, including the presence of CBC and hemi-CBCs.

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How to Cite

Martynenko, N.A., Novakovskaya, I.V., Podunay, Y.A., Van, N.T. & Gusev, E.S. (2026) Jaagichlorella terrestris sp. nov. (Trebouxiophyceae, Chlorophyta)—a new species from tropical forest in Vietnam. Phytotaxa 737 (4): 243–253. https://doi.org/10.11646/phytotaxa.737.4.5