Number of the records: 1
Dead Rhizophagus irregularis biomass mysteriously stimulates plant growth
- 1.
SYSNO ASEP 0523825 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Dead Rhizophagus irregularis biomass mysteriously stimulates plant growth Author(s) Jansa, J. (CZ)
Šmilauer, P. (CZ)
Borovička, J. (CZ)
Hršelová, H. (CZ)
Forczek, Sándor (UEB-Q) RID, ORCID
Slámová, K. (CZ)
Řezanka, T. (CZ)
Rozmoš, M. (CZ)
Bukovská, P. (CZ)
Gryndler, M. (CZ)Number of authors 10 Source Title Mycorrhiza. - : Springer - ISSN 0940-6360
Roč. 30, č. 1 (2020), s. 63-77Number of pages 15 s. Language eng - English Country DE - Germany Keywords Arbuscular mycorrhiza (AM) ; Mass spectrometry (MS) ; Metabolites ; Microbiome ; Necromass ; Signal Subject RIV EF - Botanics OECD category Plant sciences, botany Method of publishing Open access Institutional support UEB-Q - RVO:61389030 UT WOS 000516375300001 EID SCOPUS 85079706325 DOI 10.1007/s00572-020-00937-z Annotation Arbuscular mycorrhizal (AM) fungi establish symbiotic associations with many plant species, transferring significant amounts of soil nutrients such as phosphorus to plants and receiving photosynthetically fixed carbon in return. Functioning of AM symbiosis is thus based on interaction between two living partners. The importance of dead AM fungal biomass (necromass) in ecosystem processes remains unclear. Here, we applied either living biomass or necromass (0.0004 potting substrate weight percent) of monoxenically produced AM fungus (Rhizophagus irregularis) into previously sterilized potting substrate planted with Andropogon gerardii. Plant biomass production significantly improved in both treatments as compared to non-amended controls. Living AM fungus, in contrast to the necromass, specifically improved plant acquisition of nutrients normally supplied to the plants by AM fungal networks, such as phosphorus and zinc. There was, however, no difference between the two amendment treatments with respect to plant uptake of other nutrients such as nitrogen and/or magnesium, indicating that the effect on plants of the AM fungal necromass was not primarily nutritional. Plant growth stimulation by the necromass could thus be either due to AM fungal metabolites directly affecting the plants, indirectly due to changes in soil/root microbiomes or due to physicochemical modifications of the potting substrate. In the necromass, we identified several potentially bioactive molecules. We also provide experimental evidence for significant differences in underground microbiomes depending on the amendment with living or dead AM fungal biomass. This research thus provides the first glimpse into possible mechanisms responsible for observed plant growth stimulation by the AM fungal necromass. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2021 Electronic address http://doi.org/10.1007/s00572-020-00937-z
Number of the records: 1