Impact of land use history on the arbuscular mycorrhizal fungal diversity in arid soils of Argentinean farming fields

ABSTRACT Arbuscular mycorrhizal fungi (AMF) are a key soil functional group, with an important potential to increase crop productivity and sustainable agriculture including food security. However, there is clear evidence that land uses, crop rotations and soil features affect the AMF diversity and t...

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Published in:FEMS microbiology letters 2020-07, Vol.367 (14), p.1
Main Authors: Ontivero, R Emanuel, Voyron, Samuele, Allione, Lucía V Risio, Bianco, Paolo, Bianciotto, Valeria, Iriarte, Hebe J, Lugo, Mónica A, Lumini, Erica
Format: Article
Language:English
Subjects:
Agricultural ecosystems
Agricultural land
Agricultural practices
Agrochemicals
Arbuscular mycorrhizas
Aridity
Biodiversity
Calcium
Crop production
Crop rotation
Crops
Dietary supplements
Environmental aspects
Farming
Food security
Functional groups
Fungi
Land use
Microbiology
Morphology
Multivariate analysis
Mycorrhizas
Potatoes
Soil investigations
Soils
Sustainable agriculture
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Summary:ABSTRACT Arbuscular mycorrhizal fungi (AMF) are a key soil functional group, with an important potential to increase crop productivity and sustainable agriculture including food security. However, there is clear evidence that land uses, crop rotations and soil features affect the AMF diversity and their community functioning in many agroecosystems. So far, the information related to AMF biodiversity in ecosystems like the Argentinean Puna, an arid high plateau where plants experience high abiotic stresses, is still scarce. In this work, we investigated morphological and molecular AMF diversity in soils of native corn, bean and native potato Andean crops, under a familiar land use, in Chaupi Rodeo (Jujuy, Argentina), without agrochemical supplements but with different histories of crop rotation. Our results showed that AMF morphological diversity was not only high and variable among the three different crop soils but also complemented by Illumina MiSeq data. The multivariate analyses highlighted that total fungal diversity is significantly affected by the preceding crop plants and the rotation histories, more than from the present crop species, while AMF communities are significantly affected by preceding crop only in combination with the effect of nitrogen and calcium soil concentration. This knowledge will give useful information on appropriate familiar farming. Soil AMF diversity in Andean smallholder crops under rotation.
ISSN:1574-6968
0378-1097
1574-6968
DOI:10.1093/femsle/fnaa114