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dc.contributor.author
Covacevich, Fernanda
dc.contributor.author
Martínez Verneri, Julieta
dc.contributor.author
Dosio, Guillermo Aníbal Adrián
dc.date.available
2019-11-08T13:10:19Z
dc.date.issued
2018-10
dc.identifier.citation
Covacevich, Fernanda; Martínez Verneri, Julieta; Dosio, Guillermo Aníbal Adrián; Does mycorrhizal colonisation vary between maize and sunflower under limitations to radiation source or carbohydrate sink?; Csiro Publishing; Crop & Pasture Science; 69; 10; 10-2018; 974-984
dc.identifier.issn
1836-0947
dc.identifier.uri
http://hdl.handle.net/11336/88286
dc.description.abstract
The aim of this work was to analyse and compare indigenous arbuscular mycorrhizal colonisation (AMC) in relation to growth and total soluble carbohydrates (TSC) in two major, physiologically contrasting crop species: maize (Zea mays L.) and sunflower (Helianthus annuus L.). In order to promote contrasting TSC concentrations, we modified the radiation source by shading and the carbohydrate sink by manipulating reproductive sinks at different phenological stages during the grain-filling period in two field experiments. We assessed plant dry matter, TSC in stems, and root AMC from flowering until final harvest. AMC during the grain-filling period decreased in maize and increased in sunflower. A sink limitation increased AMC in maize, and reduced it in sunflower. A source limitation decreased AMC in both species, especially in sunflower. AMC was positively related to TSC in maize, but negatively in sunflower. The relationship was affected by shading in sunflower, but not in maize. In both species, a different linear model described the relationship between AMC and TSC in plants submitted to the removal of the reproductive organs. The results highlight the role of carbohydrates in mediating mycorrhizal formation, and show for the first time the opposite AMC–TSC relationships in maize and sunflower.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Csiro Publishing
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
agronomy
dc.subject
annual crops
dc.subject
endophytes
dc.subject
soluble carbohydrates
dc.subject.classification
Agricultura
dc.subject.classification
Agricultura, Silvicultura y Pesca
dc.subject.classification
CIENCIAS AGRÍCOLAS
dc.title
Does mycorrhizal colonisation vary between maize and sunflower under limitations to radiation source or carbohydrate sink?
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-22T15:38:45Z
dc.journal.volume
69
dc.journal.number
10
dc.journal.pagination
974-984
dc.journal.pais
Australia
dc.description.fil
Fil: Covacevich, Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología; Argentina
dc.description.fil
Fil: Martínez Verneri, Julieta. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
dc.description.fil
Fil: Dosio, Guillermo Aníbal Adrián. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
dc.journal.title
Crop & Pasture Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.publish.csiro.au/?paper=CP17340
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1071/CP17340


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