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

ONTIVERO, R EMANUEL; VOYRON, SAMUELE; ALLIONE, LUCÍA V RISIO; BIANCO, PAOLO; BIANCIOTTO, VALERIA; IRIARTE, HEBE J; LUGO, MÓNICA A; LUMINI, ERICA

FEMS Microbiology Letters

Oxford Academic

Lugar: Oxford; Año: 2020 vol. 367

Arbuscular mycorrhizal fungi (AMF) are a key soil functional group, with an important potential to increase cropproductivity and sustainable agriculture including food security. However, there is clear evidence that land uses, croprotations and soil features affect the AMF diversity and their community functioning in many agroecosystems. So far, theinformation related to AMF biodiversity in ecosystems like the Argentinean Puna, an arid high plateau where plantsexperience high abiotic stresses, is still scarce. In this work, we investigated morphological and molecular AMF diversity insoils 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 AMFmorphological diversity was not only high and variable among the three different crop soils but also complemented byIllumina MiSeq data. The multivariate analyses highlighted that total fungal diversity is significantly affected by thepreceding crop plants and the rotation histories, more than from the present crop species, while AMF communities aresignificantly affected by preceding crop only in combination with the effect of nitrogen and calcium soil concentration. Thisknowledge will give useful information on appropriate familiar farming