Additional data about terrestrial charophytes in the Baikal Region and surrounding areas
UDC 582.271
Abstract
The study of terrestrial microalgae of the phylum Charophyta using molecular genetics methods has changed the understanding of the evolution and phylogenetic relationships of higher plants. Their closest relatives are not complexly organized macroscopic algae of the class Charophyceae but mainly microorganisms capable of conjugation from the class Zygnemophyceae. The study of terrestrial Charophyta is of great evolutionary interest. The article provides information about terrestrial microalgae from the division Charophyta found in the Baikal Region and adjacent territories. They belong to three classes of the division: Chlorokybophyceae, Klebsormidiophyceae and Zygnemophyceae. According to the diversity of representatives known for terrestrial ecosystems in the region, the classes are ranked in reverse order. New information is provided on the findings of algae of the genera Mesotaenium (Zygnemophyceae), Klebsormidium, Interfilum, and Streptosarcina (Klebsormidiophyceae). Representatives of Mesotaenium are predominantly unicellular algae with a strong mucous sheath, the color of which can vary depending on environmental conditions. They are visible to the naked eye in the form of mucous growths on various terrestrial substrates in conditions of high humidity. The other three genera combine microscopic algae that form cell packets (Interfilum) and/or branching (Interfilum, Streptosarcina) and non-branching filaments (Klebsormidium). In nature, green Klebsormidium overgrowth can be observed on the surface of soil and rocks. For the first time, Streptosarcina has been reported in Asian Russia.
Downloads
References
Егорова И. Н, Судакова Е. А., Максимова Е. Н., Тупикова Г. С. Наземные водоросли гор Южной Сибири и Северной Монголии // Ботан. журн., 2020. – Т. 105, № 2. – С. 107–132. https://doi.org./10.31857/S0006813620020027
Busch A., Hess S. Sunscreen mucilage: A photoprotective adaptation found in terrestrial green algae (Zygnematophyceae) // Eur. J. Phycol., 2021. – Vol. 57, № 1. – P. 1–18. https://doi.org./10.1080/09670262.2021.1898677
Busch A., Hess S. A diverse group of underappreciated zygnematophytes deserves in-depth exploration // Appl. Phycol., 2022. – Vol. 3, № 1. – P. 306–323. https://doi.org./10.1080/26388081.2022.2081819
Hess S., Williams S. K., Busch A., Irisarri I., Delwiche C.F., de Vries S., Darienko T., Roger A. J., Archibald J.A., Buschmann H., von Schwartzenberg K., de Vries J. A phylogenomically informed five-order system for the closest relatives of land plants // Curr. Biol., 2022. – Vol. 32. – P. 4473–4482. e7. https://doi.org./10.1016/j.cub.2022.08.022
Gontcharov A. A. Phylogeny and classification of Zygnematophyceae (Streptophyta): Current state of affairs // Fottea, 2008. – Vol. 8. – P. 87–104.
Gontcharov A. A., Melkonian M. Molecular phylogeny and revision of the genus Netrium (Zygnematophyceae, Streptophyta): Nucleotaenium gen. nov. // J. Phycol., 2010. – Vol. 46. – P. 346–362. https://doi.org./10.1111/j.1529-8817.2010.00814.x
Mikhailyuk T. I., Sluiman H. J., Massalski A., Mudimu O., Demchenko E. M., Kondratyuk S. Y., Friedl T. New streptophyte green algae from terrestrial habitats and an assessment of the genus Interfilum (Klebsormidiophyceae, Streptophyta) // J. Phycol., 2008. – Vol. 44. – P. 1586–1603. https://doi.org./10.1111/j.1529-8817.2008.00606.x
Mikhailyuk T., Glaser K., Holzinger F., Karsten U. Biodiversity of Klebsormidium (Streptophyta) from alpine biological soil crusts (Alps, Tyrol, Austria, and Italy) // J. Phycol., 2015. – Vol. 51, № 4. – P. 750–767. https://doi.org./10.1111/jpy.12316
Mikhailyuk T., Lukesova A., Glaser K., Holzinger A., Obwegeser S., Nyporko S., Friedl T., Karsten U. New taxa of streptophyte algae (Streptophyta) from terrestrial habitats revealed using an integrative approach // Protist, 2018. – Vol. 169. – P. 406–31. https://doi.org./10.1016/j.protis.2018.03.002
Procházková L., Řezanka T., Nedbalová L., Remias D. Unicellular versus filamentous: The glacial alga Ancylonema alaskana comb. et stat. nov. and its ecophysiological relatedness to Ancylonema nordenskioeldii (Zygnematophyceae, Streptophyta) // Microorganisms, 2021. –Vol. 9, № 1103. https://doi.org./10.3390/microorganisms9051103
