Plant-Microbe Interactions

Plants accommodate on and inside plant roots a specific and species-rich microbiota. These microbes collectively function as a microbiome and, similar to the microbial communities in human or animal guts, they impact nutrition and health of their host. Individual root microbiota members are known to support plant growth e.g., by improving nutrition acquisition or providing pathogen protection. However, we still have a rudimentary understanding how plants interact with their associated microbial communities.

In our research we focus on the functional contribution of the root microbiota to plant growth and disease protection. A particular interest is how plants communicate with the root microbiota and how they influence their activities. Finally, we asses if we can manipulate the root microbiota for smart and sustainable agriculture.

We mainly investigate plant-microbiome interactions using Arabidopsis thaliana and Zea mays as models. We combine field and lab experiments and make use of methods in microbiomics, molecular biology, microbiology, plant genetics and bioinformatics.

• Structure and function of root microbiomes
• Microbiota manipulation with synthetic communities in microcosms
• Communication by root exudates
• Microbiome diagnostics for improving applications of biologicals
• Multi-tropic effects of the root microbiome

► Google Scholar: https://scholar.google.ch/citations?hl=de&user=EBmPPr8AAAAJ

• Soil (microbial) disturbance affect the zinc isotope biogeochemistry but has little effect on plant zinc uptake
  X Liu, Y Huang, H Guan, M Wiggenhauser, V Caggìa, K Schlaeppi, ...
  Science of The Total Environment 875, 162490  2023
• Lower relative abundance of ectomycorrhizal fungi under a warmer and drier climate is linked to enhanced soil organic matter decomposition (vol 232, pg 1399, 2021)
  Querejeta, Jose Ignacio; Schlaeppi, Klaus; Lopez-Garcia, Alvaro; Ondono, Sara; Prieto, Ivan; et al.
  New Phytologist, 10.1111/nph.17986  MAY 2022
• Rhizobium Symbiotic Capacity Shapes Root-Associated Microbiomes in Soybean
  Liu, Yuanhui; Ma, Bin; Chen, Wenfeng; Schlaeppi, Klaus; Erb, Matthias; et al.
  Frontiers In Microbiology  10.3389/fmicb.2021.709012  DEC 2 2021
• Soil composition and plant genotype determine benzoxazinoid-mediated plant-soil feedbacks in cereals
  Cadot, Selma; Gfeller, Valentin; Hu, Lingfei; Singh, Nikhil; Sanchez-Vallet, Andrea; Glauser, Gaetan; Croll, Daniel; Erb, Matthias; van der Heijden, Marcel G. A.; Schlaeppi, Klaus
  Plant Cell And Environment  10.1111/pce.14184  DEC 2021
• Lower relative abundance of ectomycorrhizal fungi under a warmer and drier climate is linked to enhanced soil organic matter decomposition
  Ignacio Querejeta, Jose; Schlaeppi, Klaus; Lopez-Garcia, Alvaro; Ondono, Sara; Prieto, Ivan; van Der Heijden, Marcel G. A.; Mar Alguacil, Maria
  New Phytologist 10.1111/nph.17661  NOV 2021
• Contrasting Responses of Arbuscular Mycorrhizal Fungal Families to Simulated Climate Warming and Drying in a Semiarid Shrubland
  Alguacil, Maria Del Mar; Schlaeppi, Klaus; Lopez-Garcia, Alvaro; van der Heijden, Marcel G. A.; Querejeta, Jose Ignacio
  Microbial Ecology 10.1007/s00248-021-01886-6  OCT 2021
• Specific and conserved patterns of microbiota-structuring by maize benzoxazinoids in the field
  Cadot, Selma; Guan, Hang; Bigalke, Moritz; Walser, Jean-Claude; Jander, Georg; Erb, Matthias; van der Heijden, Marcel G. A.; Schlaeppi, Klaus
  Microbiome 10.1186/s40168-021-01049-2  MAY 7 2021
• Organic and conservation agriculture promote ecosystem multifunctionality
  Wittwer, RA; Bender, SF; Hartman, K; Hydbom, S; Lima, RAA; Loaiza, V; Nemecek, T; Oehl, F; Olsson, PA; Petchey, O; Prechsl, UE; Schlaeppi, K; Scholten, T; Seitz, S; Six, J; van der Heijden, MGA
  Science Advances 10.1126/sciadv.abg6995  AUG 2021
• Plant chemistry and food web health
  Schlaeppi, Klaus; Gross, Josef J.; Hapfelmeier, Siegfried; Erb, Matthias
  New Phytologist  10.1111/nph.17385  Early Access: MAY 2021
• Relative qPCR to quantify colonization of plant roots by arbuscular mycorrhizal fungi
  Bodenhausen, Natacha; Deslandes-Herold, Gabriel; Waelchli, Jan; Held, Alain; van der Heijden, Marcel G. A.; et al.
  Mycorrhiza, 10.1007/s00572-020-01014-1, MAR 2021