Für den Inhalt der Angaben zeichnet die Projektleitung verantwortlich.
This project is one of the five winners of the call 2017 «Microbials – Direct Use of Micro-Organisms».
Project partners: Agroscope, Universität Bern; FiBL, Forschungsinstitut für Biologischen Landbau
Förderbeitrag: CHF 410'000
Dauer: 03.2018 - 02.2021
Handlungsfeld: Microbials, seit 2016
Dr. Klaus Schläppi
Dept. of Agroecology and Environment
8046 Zürich (Schweiz)
- klaus.schlaeppi@ips. unibe. ch
We need to secure food production and at the same time reduce the environmental impacts of agrochemicals. Soil and plant root microbiomes comprise beneficial microbes that promote soil fertility and plant productivity and thereby, present alternative solutions to mineral fertilizers. Arbuscular mycorrhizal fungi (AMF) are such beneficial microbiome members as they contribute to plant nutrition by providing phosphorus (up to 90% of plant P originates from AMF). While AMF reliably improve plant productivity in sterilized soils or under laboratory conditions, inoculation success into microbe-rich soils or agricultural fields remains unpredictable and highly context dependent. We hypothesize that AMF inoculations fail in some soils because the inocula face competition with the indigenous microbiota or because they are not adapted to the soil environment. Here we develop soil microbiome diagnostics to specifically predict under which conditions AMF field inoculation will be successful to enhance plant yield. We plan large-scale field inoculations of maize with different AMF species and AMF consortia to test their impact on plant yield and their potential to compensate for reduced P fertilizer inputs. We will monitor the establishment of the inocula in the roots, evaluate under which conditions inoculation affects plant yields and then model these effects as a function of the previous soil diagnostics. The goal of the project is to develop an algorithm that predicts AMF communities from biological-physical-chemical soil properties and recommends AMF species for successful inoculation for a given field. Finally, we will explore the potential of this algorithm to be marketed as a decision making tool for successful inoculations of AMF into field soils.
Was ist das Besondere an diesem Projekt?
In this project, we develop soil microbiome diagnostics so that beneficial AMF can be inoculated to field soils in a targeted manner. Goals are to improve the reliability of AMF applications and to predict under which conditions AMF inoculations will be successful.
Our approach is conceptually similar to ‘personalized medicine’, we pre-diagnose the soil (chemical measurements and microbiome profiling) and then we choose the AMF inoculant that best fits the local soil conditions. Our vision is that soil microbiome diagnostics becomes a tool for ‘smart farming’ through which the targeted application of microbials becomes a reliable and sustainable agronomic alternative to the usage of mineral fertilizers.
This 3-year project starts on March 1st in 2018. We plan large-scale field experiments over two field seasons. In the first year, we will inoculate 25 field sites with AMF to test their potential to replace P fertilizer inputs. In the second year, we will continue on 25 additional field sites with applications of different AMF species and AMF consortia. Milestones will the development of algorithms to model the AMF community from soil chemical data and to predict AMF inoculation success. In the third year of the project, we aim to validate the algorithms at 10 additional test sites, where we will target the inoculations of the AMF based on precedent soil microbiome diagnostics.
Bender SF, Wagg C, van der Heijden MGA. 2016. An Underground Revolution: Biodiversity and Soil Ecological Engineering for Agricultural Sustainability. Trends in Ecology and Evolution 31: 440–452;
Schlaeppi K, Bender SF, Mascher F, Russo G, Patrignani A, Camenzind T, Hempel S, Rillig MC, van der Heijden MGA. 2016. High-resolution community profiling of arbuscular mycorrhizal fungi. New Phytologist 212: 780–791;
Schlaeppi K, Bulgarelli D. 2015. The Plant Microbiome at Work. Molecular Plant-Microbe Interactions MPMI 212: 212–217;
None so far
Am Projekt beteiligte Personen
Dr. Klaus Schlaeppi
, Projektleiter, Agroscope, University of Bern Dr. Natacha Bodenhausen
, FiBLProf. Marcel van der Heijden
, AgroscopeJulia Hess
, AgroscopeAlain Held
, AgroscopeCaroline Scherrer
, AgroscopAndrea Bonvicini
, AgroscopeSusanne Müller
Letzte Aktualisierung dieser Projektdarstellung 11.12.2018