Alkalitolerant micromycetes in acidic and neutral soils of the temperate zone
- Authors: Bondarenko S.A.1,2, Georgieva M.L.1,3, Bilanenko E.N.1
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Affiliations:
- Biological Faculty
- Research Center of Biotechnology
- Gause Antibiotics Research Institute
- Issue: Vol 85, No 6 (2016)
- Pages: 737-744
- Section: Experimental Articles
- URL: https://bakhtiniada.ru/0026-2617/article/view/162897
- DOI: https://doi.org/10.1134/S0026261716060035
- ID: 162897
Cite item
Abstract
A wide diversity of micromycetes from various taxonomic groups in acidic and neutral soils is known from the literature data. In the present work, the fungi isolated from these soils and capable of growth at high pH are analyzed. The fungi were isolated from acidic sod-podzol and neutral cultivated soils by plating on alkaline agar (pH 10.0–10.5). Their identification was carried out using morphological, cultural, and molecular genetic criteria. Phylogenetic analysis was performed and the rates of linear growth within a broad pH range (4.0–10.4) were determined. The isolates represented a polyphyletic group of ascomycetes (Sordariomycetes), which included members of Plectosphaerellaceae (5 species) and various families of Hypocreales (4 species). The most common species were Gibellulopsis nigrescens, Acrostalagmus luteoalbus, Chordomyces antarcticum, and Plectosphaerella spp. Investigation of fungal growth at different pH values revealed all isolates to be alkalitolerant, with no alkaliphilic fungi isolated from acidic sod-podzol and neutral cultivated soils. Although the group of isolates was polyphyletic and its members originated from different ecological and trophic niches, most alkalitolerant isolates exhibited common morphological traits with acremonium- and verticillium-like conidial spore formation, abundant slime formation, and a tendency for aggregation of their mycelium in bundles. Our research confirmed the presence of fungi with alkalitolerant adaptation to external pH in the sod-podzolic and cultivated soils of the Moscow region.
About the authors
S. A. Bondarenko
Biological Faculty; Research Center of Biotechnology
Author for correspondence.
Email: bond.sonia@gmail.com
Russian Federation, Moscow; Moscow
M. L. Georgieva
Biological Faculty; Gause Antibiotics Research Institute
Email: bond.sonia@gmail.com
Russian Federation, Moscow; Moscow
E. N. Bilanenko
Biological Faculty
Email: bond.sonia@gmail.com
Russian Federation, Moscow
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