The effects of arbuscular mycorrhizal fungal species andtaxonomic groups on stressed and unstressed plants: a globalmeta-analysis

MARRO, N.; GRILLI, G.; SOTERAS, F.; CACCIA, M.; LONGO, S.; COFRÉ, N.; BORDA, V.; BURNI, M; JANOUSKOVA, M; URCELAY, C.

NEW PHYTOLOGIST

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2022

0028-646X

The great majority of plants gain access to soil nutrients and enhance their performanceunder stressful conditions through symbiosis with arbuscular mycorrhizal fungi (AMF). Thebenefits that AMF confer vary among species and taxonomic groups. However, a compara-tive analysis of the different benefits among AMF has not yet been performed.We conducted a global meta-analysis of recent studies testing the benefits of individualAMF species and main taxonomic groups in terms of plant performance (growth and nutri-tion). Separately, we examined AMF benefits to plants facing biotic (pathogens, parasites,and herbivores) and abiotic (drought, salinity, and heavy metals) stress.AMF had stronger positive effects on phosphorus nutrition than on plant growth and nitro-gen nutrition and the effects on the growth of plants facing biotic and abiotic stresses weresimilarly positive. While the AMF taxonomic groups showed positive effects on plant perfor-mance either with or without stress, Diversisporales were the most beneficial to plants withoutstress and Gigasporales to plants facing biotic stress.Our results provide a comprehensive analysis of the benefits of different AMF species andtaxonomic groups on plant performance and useful insights for their management and use asbio-inoculants for agriculture and restoration