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Katarina Hedlund

Katarina Hedlund

Professor

Katarina Hedlund

Long-term agricultural management impacts arbuscular mycorrhizal fungi more than short-term experimental drought

Author

  • Katja Kozjek
  • Dominika Kundel
  • Sandeep K. Kushwaha
  • Pål Axel Olsson
  • Dag Ahrén
  • Andreas Fliessbach
  • Klaus Birkhofer
  • Katarina Hedlund

Summary, in English

Agricultural management practices and extreme weather events associated with climate change can influence the diversity and abundance of arbuscular mycorrhizal fungi (AMF) with potential consequences for crop production. However, the importance of the interactive effects of long-term agricultural management and extreme weather events on AMF communities in agricultural soils is not yet fully explored. A short-term drought experiment with rainout-shelters was performed in winter wheat fields in a long-term agricultural trial with organic (biodynamic) and conventional management practices. During four months of the winter wheat growing period (March–June 2017), the rainout-shelters reduced the ambient precipitation by 65% on average. At two sampling dates, the AMF diversity and community composition were assessed using a single-molecule real-time (SMRT) DNA sequencing. A total of 955 amplicon sequence variants (ASVs), belonging to twelve genera were identified. The long-term farming systems and the short-term experimental drought did not affect AMF ASV diversity levels. The AMF community composition at the genus level differed between the organic and the conventional farming systems, but no distinctive communities were found in response to the experimental drought. The three most abundant genera Acaulospora, Paraglomus and Funneliformis were correlated to the two farming practices. Our study demonstrates that AMF communities in agricultural soils are responsive to long-term farming systems, and are resistant to one short-term summer drought event.

Department/s

  • Biodiversity
  • BECC: Biodiversity and Ecosystem services in a Changing Climate
  • Soil Ecology
  • Centre for Environmental and Climate Science (CEC)
  • Plant Biology
  • Molecular Cell Biology

Publishing year

2021-12-01

Language

English

Publication/Series

Applied Soil Ecology

Volume

168

Document type

Journal article

Publisher

Elsevier

Topic

  • Agricultural Science

Keywords

  • Experimental drought
  • Long-term farming practices
  • Arbuscular mycorrhizal fungi
  • Single-molecule real-time sequencing

Status

Published

Research group

  • Soil Ecology
  • Plant Biology

ISBN/ISSN/Other

  • ISSN: 0929-1393