Soil P reduces mycorrhizal colonization while favors fungal pathogens: observational and experimental evidence in Bipinnula (Orchidaceae)

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dc.contributor.authorIsabel Mujica, Maria
dc.contributor.authorFernanda Perez, Maria
dc.contributor.authorJakalski, Marcin
dc.contributor.authorMartos, Florent
dc.contributor.authorAndre Selosse, Marc
dc.date.accessioned2025-01-23T19:46:54Z
dc.date.available2025-01-23T19:46:54Z
dc.date.issued2020
dc.description.abstractLittle is known about the soil factors influencing root-associated fungal communities in Orchidaceae. Limited evidence suggests that soil nutrients may modulate the association with orchid mycorrhizal fungi (OMF), but their influence on non-mycorrhizal fungi remains unexplored. To study how nutrient availability affects mycorrhizal and non-mycorrhizal fungi associated with the orchid Bipinnula fimbriata, we conducted a metagenomic investigation within a large population with variable soil conditions. Additionally, we tested the effect of phosphorus (P) addition on fungal communities and mycorrhizal colonization. Soil P negatively correlated with the abundance of OMF, but not with the abundance of non-mycorrhizal fungi. After fertilization, increments in soil P negatively affected mycorrhizal colonization; however, they had no effect on OMF richness or composition. The abundance and richness of pathotrophs were negatively related to mycorrhizal colonization and then, after fertilization, the decrease in mycorrhizal colonization correlated with an increase in pathogen richness. Our results suggest that OMF are affected by soil conditions differently from non-mycorrhizal fungi. Bipinnula fimbriata responds to fertilization by altering mycorrhizal colonization rather than by switching OMF partners in the short term, and the influence of nutrients on OMF is coupled with indirect effects on the whole fungal community and potentially on plant's health.
dc.description.funderAgencia Nacional de Investigacion y Desarrollo de Chile (ANID), project FONDECYT
dc.fuente.origenWOS
dc.identifier.doi10.1093/femsec/fiaa178
dc.identifier.eissn1574-6941
dc.identifier.issn0168-6496
dc.identifier.urihttps://doi.org/10.1093/femsec/fiaa178
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100330
dc.identifier.wosidWOS:000593018400007
dc.issue.numero11
dc.language.isoen
dc.revistaFems microbiology ecology
dc.rightsacceso restringido
dc.subjectorchid mycorrhiza
dc.subjectfungal root community
dc.subjectfungal guilds
dc.subjectorchid fertilization
dc.subjectsoil nutrients
dc.subjectBipinnula
dc.subject.ods15 Life on Land
dc.subject.ods02 Zero Hunger
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa02 Hambre cero
dc.titleSoil P reduces mycorrhizal colonization while favors fungal pathogens: observational and experimental evidence in Bipinnula (Orchidaceae)
dc.typeartículo
dc.volumen96
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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