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

Kozjek, Katja; Kundel, Dominika; Kushwaha, Sandeep K.; Olsson, Pal Axel; Ahrén, Dag; Fliessbach, Andreas; Birkhofer, Klaus and Hedlund, Katarina (2021) Long-term agricultural management impacts arbuscular mycorrhizal fungi more than short-term experimental drought. Applied Soil Ecology, 168 (104140), pp. 1-11.

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Document available online at: https://www.sciencedirect.com/science/article/pii/S0929139321002638


Summary in the original language of the document

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.


EPrint Type:Journal paper
Keywords:Experimental drought, Long-term farming practices, Arbuscular mycorrhizal fungi, Single-molecule real-time sequencing, Abacus, FiBL10101, SoilClim
Agrovoc keywords:
Language
Value
URI
English
long-term experiments
http://aims.fao.org/aos/agrovoc/c_4f8733aa
English
mycorrhizae
http://aims.fao.org/aos/agrovoc/c_5023
English
drought
http://aims.fao.org/aos/agrovoc/c_2391
Subjects: Soil > Soil quality
Research affiliation: Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Crops > Field trials > Long-term experiments
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Soil > Soil quality
DOI:10.1016/j.apsoil.2021.104140
Related Links:https://www.fibl.org/en/themes/projectdatabase/projectitem/project/1286
Deposited By: Forschungsinstitut für biologischen Landbau, FiBL
ID Code:43150
Deposited On:04 Jan 2022 14:13
Last Modified:05 Jan 2022 13:45
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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