Range-Expanding Populations of a Globally Introduced Weed Experience Negative Plant-Soil Feedbacks

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dc.contributor.authorAndonian, Krikor
dc.contributor.authorHierro, Jose L.
dc.contributor.authorKhetsuriani, Liana
dc.contributor.authorBecerra, Pablo
dc.contributor.authorJanoyan, Grigor
dc.contributor.authorVillarreal, Diego
dc.contributor.authorCavieres, Lohengrin
dc.contributor.authorFox, Laurel R.
dc.contributor.authorCallaway, Ragan M.
dc.date.accessioned2024-01-10T13:17:01Z
dc.date.available2024-01-10T13:17:01Z
dc.date.issued2011
dc.description.abstractBackground: Biological invasions are fundamentally biogeographic processes that occur over large spatial scales. Interactions with soil microbes can have strong impacts on plant invasions, but how these interactions vary among areas where introduced species are highly invasive vs. naturalized is still unknown. In this study, we examined biogeographic variation in plant-soil microbe interactions of a globally invasive weed, Centaurea solstitialis (yellow starthistle). We addressed the following questions (1) Is Centaurea released from natural enemy pressure from soil microbes in introduced regions? and (2) Is variation in plant-soil feedbacks associated with variation in Centaurea's invasive success?
dc.description.abstractMethodology/Principal Findings: We conducted greenhouse experiments using soils and seeds collected from native Eurasian populations and introduced populations spanning North and South America where Centaurea is highly invasive and noninvasive. Soil microbes had pervasive negative effects in all regions, although the magnitude of their effect varied among regions. These patterns were not unequivocally congruent with the enemy release hypothesis. Surprisingly, we also found that Centaurea generated strong negative feedbacks in regions where it is the most invasive, while it generated neutral plant-soil feedbacks where it is noninvasive.
dc.description.abstractConclusions/Significance: Recent studies have found reduced below-ground enemy attack and more positive plant-soil feedbacks in range-expanding plant populations, but we found increased negative effects of soil microbes in range-expanding Centaurea populations. While such negative feedbacks may limit the long-term persistence of invasive plants, such feedbacks may also contribute to the success of invasions, either by having disproportionately negative impacts on competing species, or by yielding relatively better growth in uncolonized areas that would encourage lateral spread. Enemy release from soil-borne pathogens is not sufficient to explain the success of this weed in such different regions. The biogeographic variation in soil-microbe effects indicates that different mechanisms may operate on this species in different regions, thus establishing geographic mosaics of species interactions that contribute to variation in invasion success.
dc.description.funderU.S. Fulbright Student Fellowship
dc.description.funderSTEPS
dc.description.funderLangenheim Plant Ecology Fellowship
dc.description.funderCRDF
dc.description.funderNSF
dc.description.funderAndrew W. Mellon Foundation
dc.description.funderDoD SERDP
dc.description.funderUniversity of Montana
dc.description.funderRocky Mountain Research Station
dc.description.funderCONICET
dc.description.funderInstitute of Ecology and Biodiversity
dc.format.extent8 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1371/journal.pone.0020117
dc.identifier.issn1932-6203
dc.identifier.pubmedidMEDLINE:21629781
dc.identifier.urihttps://doi.org/10.1371/journal.pone.0020117
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78631
dc.identifier.wosidWOS:000291005200035
dc.information.autorucAgronomía e Ing. Forestal; Becerra P ;S/I;70099
dc.issue.numero5
dc.language.isoen
dc.nota.accesoSin adjunto
dc.publisherPUBLIC LIBRARY SCIENCE
dc.revistaPLOS ONE
dc.rightsregistro bibliográfico
dc.subjectSTARTHISTLE CENTAUREA-SOLSTITIALIS
dc.subjectINVASIVE TREE
dc.subjectRELEASE
dc.subjectBIOTA
dc.subjectPATHOGENS
dc.subjectEXPLAIN
dc.subjectACCUMULATION
dc.subjectDIVERSITY
dc.subjectSUCCESS
dc.subjectFITNESS
dc.subject.ods15 Life on Land
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleRange-Expanding Populations of a Globally Introduced Weed Experience Negative Plant-Soil Feedbacks
dc.typeartículo
dc.volumen6
sipa.codpersvinculados70099
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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