Ecological and metabolic implications of the nurse effect of Maihueniopsis camachoi in the Atacama Desert

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dc.contributor.authorDiaz, Francisca P.
dc.contributor.authorDussarrat, Thomas
dc.contributor.authorCarrasco-Puga, Gabriela
dc.contributor.authorColombie, Sophie
dc.contributor.authorPrigent, Sylvain
dc.contributor.authorDecros, Guillaume
dc.contributor.authorBernillon, Stephane
dc.contributor.authorCassan, Cedric
dc.contributor.authorFlandin, Amelie
dc.contributor.authorGuerrero, Pablo C.
dc.contributor.authorGibon, Yves
dc.contributor.authorRolin, Dominique
dc.contributor.authorCavieres, Lohengrin A.
dc.contributor.authorPetriacq, Pierre
dc.contributor.authorLatorre, Claudio
dc.contributor.authorGutierrez, Rodrigo A.
dc.date.accessioned2025-01-20T17:11:15Z
dc.date.available2025-01-20T17:11:15Z
dc.date.issued2024
dc.description.abstractPlant-plant positive interactions are key drivers of community structure. Yet, the underlying molecular mechanisms of facilitation processes remain unexplored. We investigated the 'nursing' effect of Maihueniopsis camachoi, a cactus that thrives in the Atacama Desert between c. 2800 and 3800 m above sea level. We hypothesised that an important protective factor is thermal amelioration of less cold-tolerant species with a corresponding impact on molecular phenotypes.To test this hypothesis, we compared plant cover and temperatures within the cactus foliage with open areas and modelled the effect of temperatures on plant distribution. We combined eco-metabolomics and machine learning to test the molecular consequences of this association.Multiple species benefited from the interaction with M. camachoi. A conspicuous example was the extended distribution of Atriplex imbricata to colder elevations in association with M. camachoi (400 m higher as compared to plants in open areas). Metabolomics identified 93 biochemical markers predicting the interaction status of A. imbricata with 79% accuracy, independently of year.These findings place M. camachoi as a key species in Atacama plant communities, driving local biodiversity with an impact on molecular phenotypes of nursed species. Our results support the stress-gradient hypothesis and provide pioneer insights into the metabolic consequences of facilitation.
dc.fuente.origenWOS
dc.identifier.doi10.1111/nph.19415
dc.identifier.eissn1469-8137
dc.identifier.issn0028-646X
dc.identifier.urihttps://doi.org/10.1111/nph.19415
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91169
dc.identifier.wosidWOS:001107432200001
dc.issue.numero3
dc.language.isoen
dc.pagina.final1087
dc.pagina.inicio1074
dc.revistaNew phytologist
dc.rightsacceso restringido
dc.subjectAtacama Desert
dc.subjecteco-metabolomics
dc.subjectfacilitation
dc.subjectmachine learning
dc.subjectMaihueniopsis camachoi
dc.subjectpositive interactions
dc.subject.ods15 Life on Land
dc.subject.ods13 Climate Action
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa13 Acción por el clima
dc.titleEcological and metabolic implications of the nurse effect of Maihueniopsis camachoi in the Atacama Desert
dc.typeartículo
dc.volumen241
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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