Early ecological succession patterns of bacterial, fungal and plant communities along a chronosequence in a recently deglaciated area of the Italian Alps
| Autor: | Benedetta Turchetti, Isabella Gandolfi, Roberto Sergio Azzoni, Guglielmina Diolaiuti, Roberto Ambrosini, P. Buzzini, Manuela Pelfini, Andrea Franzetti, Claudio Smiraglia, F Pittino, Chiara Compostella |
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| Přispěvatelé: | Franzetti, A, Pittino, F, Gandolfi, I, Azzoni, R, Diolaiuti, G, Smiraglia, C, Pelfini, M, Compostella, C, Turchetti, B, Buzzini, P, Ambrosini, R |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine beta-diversity cold habitat Chronosequence Ecological succession Biology glacier forefield 010603 evolutionary biology 01 natural sciences Applied Microbiology and Biotechnology Microbiology Decomposer 03 medical and health sciences Soil RNA Ribosomal 16S network analysi Colonization Organic matter Ice Cover Polaromonas Soil Microbiology chemistry.chemical_classification Pioneer species Ecology Bacteria Fungi Plant community alpha diversity Plants biology.organism_classification 030104 developmental biology chemistry Italy retreating glacier Network analysis |
| Zdroj: | FEMS microbiology ecology. 96(10) |
| ISSN: | 1574-6941 |
| Popis: | In this study, the early ecological succession patterns of Forni Glacier (Ortles-Cevedale group, Italian Alps) forefield along an 18-year long chronosequence (with a temporal resolution of 1 year) has been reported. Bacterial and fungal community structures were inferred by high-throughput sequencing of 16S rRNA gene and ITS, respectively. In addition, the occurrence of both herbaceous and arboreous plants was also recorded at each plot. A significant decrease of alpha-diversity in more recently deglaciated areas was observed for both bacteria and plants. Time since deglaciation and pH affected the structure of both fungal and bacterial communities. Pioneer plants could be a major source of colonization for both bacterial and fungal communities. Consistently, some of the most abundant bacterial taxa and some of those significantly varying with pH along the chronosequence (Polaromonas, Granulicella, Thiobacillus, Acidiferrobacter) are known to be actively involved in rock-weathering processes due to their chemolithotrophic metabolism, thus suggesting that the early phase of the chronosequence could be mainly shaped by the biologically controlled bioavailability of metals and inorganic compounds. Fungal communities were dominated by ascomycetous filamentous fungi and basidiomycetous yeasts. Their role as cold-adapted organic matter decomposers, due to their heterotrophic metabolism, was suggested. |
| Databáze: | OpenAIRE |
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