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dc.contributor.author
Teste, Francois Philippe
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dc.contributor.author
Laliberté, E.
dc.date.available
2024-01-26T09:22:09Z
dc.date.issued
2019
dc.identifier.citation
Dual-mycorrhizal plant functional responses following shifts in soil nutrient availability during ecosystem development; II International Symposium Mycorrhizal Symbiosis in South America; San Carlos de Bariloche; Argentina; 2019; 1-29
dc.identifier.uri
http://hdl.handle.net/11336/224925
dc.description.abstract
The majority of terrestrial plants form root symbioses with arbuscular mycorrhizal (AM) fungi to enhance nutrient (particularly phosphorus, P) acquisition. However, some of these plant species also form dual symbioses involving ectomycorrhizal (ECM) fungi. The factors driving plants to form dual-mycorrhizal symbioses is poorly understood. It has been suggested that these plants show plasticity in root symbioses to optimize nutrient acquisition depending on the type and strength of soil nutrient limitation (e.g., N vs. P). Alternatively, the degree of investment or ?preference? in particular root symbioses might simply reflect differences in inoculum potential among soils of contrasting nutrient availability, reflecting adaptations of root symbionts to different edaphic conditions. To better understand the ecology of dual-mycorrhizal plants, we grew two co‐occurring plant species forming AM and ECM (Acacia rostellifera and Melaleuca systena) symbioses in soils of increasing age and contrasting nutrient availability from an Australian long‐term soil chronosequence. Specifically, we aimed to disentangle the relative importance of abiotic factors (e.g., soil nutrient availability) and biotic factors (e.g., soil inoculum potential) in determining root colonization patterns and functional outcomes of these multiple root symbioses. For both plant species, we found clear hump‐shaped plant growth patterns along the strong gradient in soil nutrient availability, with peak growth in intermediate‐aged soils, while high levels of mycorrhizal colonization by the ?preferred? root symbionts were maintained across all soils. We found large increases (540%) in foliar manganese concentrations with increasing soil age and declining P availability, suggesting that plants may be relying on the release of carboxylates to help acquire P in the most P‐impoverished soils. Finally, we found that soil abiotic properties, such as strong differences in soil nutrient availability, are generally more important than soil inoculum potential in explaining these shifts in our plant and root responses. Our study suggests that plants capable of forming dual-mycorrhiza root symbioses show plasticity in their nutrient‐acquisition strategies following shifts in soil nutrients during long‐term ecosystem development, yet maintain a preference for certain root symbionts despite changes in soil microbial inoculum.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Universidad Nacional del Comahue
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ECOSYSTEM DEVELOPMENT AND RETROGRESSION
dc.subject
FOLIAR MANGANESE
dc.subject
NITROGEN AND PHOSPHORUS LIMITATION
dc.subject
NUTRIENT‐ACQUISITION STRATEGIES
dc.subject
POOR AND DEFICIENT SOIL
dc.subject
ROOT TRAITS
dc.subject.classification
Ecología
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Dual-mycorrhizal plant functional responses following shifts in soil nutrient availability during ecosystem development
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/conferenceObject
dc.type
info:ar-repo/semantics/documento de conferencia
dc.date.updated
2023-02-01T15:31:05Z
dc.journal.pagination
1-29
dc.journal.pais
Argentina
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dc.journal.ciudad
San Carlos de Bariloche
dc.description.fil
Fil: Teste, Francois Philippe. University of Western Australia; Australia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi". Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis "Prof. Ezio Marchi"; Argentina
dc.description.fil
Fil: Laliberté, E.. University of Western Australia; Australia
dc.conicet.rol
Autor
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dc.conicet.rol
Autor
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dc.coverage
Internacional
dc.type.subtype
Simposio
dc.description.nombreEvento
II International Symposium Mycorrhizal Symbiosis in South America
dc.date.evento
2019-03-06
dc.description.ciudadEvento
San Carlos de Bariloche
dc.description.paisEvento
Argentina
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dc.type.publicacion
Book
dc.description.institucionOrganizadora
Universidad Nacional del Comahue
dc.description.institucionOrganizadora
Universidad Austral de Chile
dc.description.institucionOrganizadora
Universidad Nacional del Comahue. Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales
dc.description.institucionOrganizadora
Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente
dc.source.libro
Abstracts book : II International Symposium Mycorrhizal Symbiosis in South America
dc.date.eventoHasta
2019-03-08
dc.type
Simposio
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