Susceptibility of ectomycorrhizal fungi to soil heating
| Autor: | Thomas Wohlgemuth, Simon Egli, Tabea Kipfer, Barbara Moser, Jaboury Ghazoul |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
0106 biological sciences
Hot Temperature Molecular Sequence Data 010603 evolutionary biology 01 natural sciences Ectosymbiosis Soil Propagule Cenococcum geophilum Rhizopogon roseolus Mycorrhizae Botany Genetics Ecology Evolution Behavior and Systematics Soil Microbiology Biotic component Microbial Viability biology fungi Scots pine Fungi Soil classification 15. Life on land biology.organism_classification Pinus Infectious Diseases Pinaceae 010606 plant biology & botany |
| Zdroj: | Fungal biology. 114(5-6) |
| ISSN: | 1878-6146 |
| Popis: | Ectomycorrhizal (EcM) fungi are an important biotic factor for successful tree recruitment because they enhance plant growth and alleviate drought stress of their hosts. Thus, EcM propagules are expected to be a key factor for forest regeneration after major disturbance events such as stand-replacing forest fires. Yet the susceptibility of soil-borne EcM fungi to heat is unclear. In this study, we investigated the heat tolerance of EcM fungi of Scots pine (Pinus sylvestris L., Pinaceae). Soil samples of three soil depths were heated to the temperature of 45, 60 and 70 °C, respectively, and surviving EcM fungi were assessed by a bioassay using Scots pine as an experimental host plant. EcM species were identified by a combination of morphotyping and sequencing of the ITS region. We found that mean number of species per sample was reduced by the 60 and 70 °C treatment, but not by the 45 °C treatment. Species composition changed due to heat. While some EcM fungi species did not survive heating, the majority of species was also found in the heated samples. The most frequent species in the heat treatment were Rhizopogon roseolus, Cenococcum geophilum and several unidentified species. |
| Databáze: | OpenAIRE |
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