Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Redistribution of soil water by a saprotrophic fungus enhances carbon mineralization

Title data

Guhr, Alexander ; Borken, Werner ; Spohn, Marie ; Matzner, Egbert:
Redistribution of soil water by a saprotrophic fungus enhances carbon mineralization.
In: Proceedings of the National Academy of Sciences of the United States of America. Vol. 112 (2015) Issue 47 . - pp. 14647-14651.
ISSN 1091-6490
DOI: https://doi.org/10.1073/pnas.1514435112

Abstract in another language

The desiccation of upper soil horizons is a common phenomenon,leading to a decrease in soil microbial activity and mineralization.Recent studies have shown that fungal communities and fungalbasedfood webs are less sensitive and better adapted to soildesiccation than bacterial-based food webs. One reason for a betterfungal adaptation to soil desiccation may be hydraulic redistributionof water by mycelia networks. Here we show that a saprotrophicfungus (Agaricus bisporus) redistributes water frommoist (–0.03 MPa) into dry (–9.5 MPa) soil at about 0.3 cm·min−1 in single hyphae, resulting in an increase in soil water potential after 72 h. The increase in soil moisture by hydraulic redistribution significantly enhanced carbonmineralization by 2,800% and enzymatic activity by 250–350% inthe previously dry soil compartment within 168 h. Our results demonstrate that hydraulic redistribution can partly compensate water deficiency if water is available in other zones of the mycelia network.Hydraulic redistribution is likely one of themechanisms behind higherdrought resistance of soil fungi compared with bacteria. Moreover,hydraulic redistribution by saprotrophic fungi is an underrated pathway of water transport in soils and may lead to a transfer of water to zones of high fungal activity.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER129485
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors > Chair Soil Ecology - Univ.-Prof. Dr. Egbert Matzner
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 01 Aug 2016 11:03
Last Modified: 01 Aug 2016 11:03
URI: https://eref.uni-bayreuth.de/id/eprint/33744