in the repository
URN to cite this document: urn:nbn:de:bvb:703-epub-5108-7
Title data
Guhr, Alexander ; Kircher, Sophia:
Drought-Induced Stress Priming in Two Distinct Filamentous Saprotrophic Fungi.
In: Microbial Ecology.
Vol. 80
(2020)
.
- pp. 27-33.
ISSN 1432-184X
DOI der Verlagsversion: https://doi.org/10.1007/s00248-019-01481-w
![[thumbnail of Guhr-Kircher2020_Article_Drought-InducedStressPrimingIn.pdf]](https://epub.uni-bayreuth.de/style/images/fileicons/application_pdf.png) |
|
||||||||
|
Download (557kB)
|
Project information
| Project title: |
Project's official title Project's id No information GU 1818/1-1 |
|---|---|
| Project financing: |
Deutsche Forschungsgemeinschaft |
Abstract
Sessile organisms constantly face environmental fluctuations and especially drought is a common stressor. One adaptive mechanism is “stress priming,” the ability to cope with a severe stress (“triggering”) by retaining information from a previous mild stress event (“priming”). While plants have been extensively investigated for drought-induced stress priming, no information is available for saprotrophic filamentous fungi, which are highly important for nutrient cycles. Here, we investigated the potential for drought-induced stress priming of one strain each of two ubiquitous species, Neurospora crassa and Penicillium chrysogenum. A batch experiment with 4 treatments was conducted on a sandy soil: exposure to priming and/or triggering as well as non-stressed controls. A priming stress was caused by desiccation to pF 4. The samples were then rewetted and after 1-, 7-, or 14-days of recovery triggered (pF 6). After triggering, fungal biomass, respiration, and β-glucosidase activity were quantified. P. chrysogenum showed positive stress priming effects. After 1 day of recovery, biomass as well as β-glucosidase activity and respiration were 0.5 to 5 times higher during triggering. Effects on biomass and activity decreased with prolonged recovery but lasted for 7 days and minor effects were still detectable after 14 days. Without triggering, stress priming had a temporary negative impact on biomass but this reversed after 14 days. For N. crassa, no stress priming effect was observed on the tested variables. The potential for drought-induced stress priming seems to be species specific with potentially high impact on composition and activity of fungal communities considering the expected increase of drought events.
Further data
| Item Type: | Article in a journal |
|---|---|
| Keywords: | Drought stress; Saprotrophic filamentous fungi; Stress memory; Stress priming |
| DDC Subjects: | 500 Science > 550 Earth sciences, geology 500 Science > 570 Life sciences, biology |
| Institutions of the University: | Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences |
| Language: | English |
| Originates at UBT: | Yes |
| URN: | urn:nbn:de:bvb:703-epub-5108-7 |
| Date Deposited: | 24 Sep 2020 10:18 |
| Last Modified: | 24 Sep 2020 10:20 |
| URI: | https://epub.uni-bayreuth.de/id/eprint/5108 |
Download Statistics