Mycobiota of the red algae Palmaria palmata in the Kandalaksha Bay of the White Sea

• Main Authors: M. I. Kovalenko, M. L. Georgieva, V. V. Kozlovsky, I. A. Maximova, A. V. Kachalkin, E. N. Bubnova, М. И. Коваленко, М. Л. Георгиева, В. В. Козловский, И. А. Максимова, А. В. Качалкин, Е. Н. Бубнова
• Format: Article in Journal/Newspaper
• Language: Russian
• Published: Lomonosov Moscow State University, School of Biology 2023
• Subjects: Белое море; seaweeds; Rhodophyta; Palmaria; dulse; White Sea; водоросли-макрофиты; дульс; Kandalaksha; Arctic; Белого моря
• Online Access: https://vestnik-bio-msu.elpub.ru/jour/article/view/1209; https://doi.org/10.55959/MSU0137-0952-16-78-1-4

This is a first report about the diversity of micromycetes associated with living thalli of the edible red algae Palmaria palmata (dulse). We collected samples in the Kandalaksha Bay of the White Sea at upper (10 thalli in the littoral) and lower (10 thalli in the sublittoral) lines of this species distribution. The work was carried out by cultural methods, fungi were isolated from the surface of thalli. From one thallus from 0 to 55 colonies belongs to 0–24 morphotypes were isolated. The total diversity was 52 morphotypes, of which 48 were mycelia and 4 were yeast. All identified yeasts belong to Basidiomycota; among filamentous fungi, 2 species belongs to Zygomycota, and the rest belongs to Ascomycota, the vast majority of which are represented by anamorphic stages. The most diverse genera were Acremonium (10 morphotypes), Penicillium (9) and Cladosporium (6); the most numerous are Acremonium (158 colonies) and Cladosporium (103 colonies). Acremonium fuci is the most common species on the studied thalli (122 colonies on 15 thalli). The most important factor for the formation of the surface mycobiota of dulse is the habitat: littoral and sublittoral algal populations differ significantly in the fungal communities number and structure. The thalli of the littoral population are much richer in fungi. The mycobiota of littoral samples in dominated by dark-colored species, as well as Acremonium fuci and Sarocladium strictum. While the mycobiota of sublittoral samples is dominated by light-colored species, and most of the isolated yeasts were also founded here. Проведено исследование разнообразия микромицетов, ассоциированных с живыми талломами съедобной красной водоросли Palmaria palmata (дульс) в Белом море. Образцы отбирали в Кандалакшском заливе, на верхней (10 талломов на литорали) и нижней (10 талломов в сублиторали) границах распространения вида. Работу проводили культуральными методами, грибы выделяли с поверхности талломов. С одного образца водоросли выделялось от 0 до 55 колоний; максимальное число ...