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dc.contributor.author
Martínez Noël, Giselle María Astrid
dc.contributor.author
Dosio, Guillermo Aníbal Adrián
dc.contributor.author
Puebla, Andrea F.
dc.contributor.author
Insani, Ester M.
dc.contributor.author
Tognetti, Jorge A.
dc.date.available
2017-01-05T20:38:53Z
dc.date.issued
2015-10
dc.identifier.citation
Martínez Noël, Giselle María Astrid; Dosio, Guillermo Aníbal Adrián; Puebla, Andrea F.; Insani, Ester M.; Tognetti, Jorge A.; Sunflower: a potential fructan-bearing crop?; Frontiers Media; Frontiers in Plant Science; 6; 10-2015; 1-6; 798
dc.identifier.uri
http://hdl.handle.net/11336/10894
dc.description.abstract
Grain filling in sunflower (Helianthus annuus L.) mainly depends on actual photosynthesis, being the contribution of stored reserves in stems (sucrose, hexoses, and starch) rather low. Drought periods during grain filling often reduce yield. Increasing the capacity of stem to store reserves could help to increase grain filling and yield stability in dry years. Fructans improve water uptake in soils at low water potential, and allow the storage of large amount of assimilates per unit tissue volume that can be readily remobilized to grains. Sunflower is a close relative to Jerusalem artichoke (H. tuberosus L.), which accumulates large amounts of fructan (inulin) in tubers and true stems. The reason why sunflower does not accumulate fructans is obscure. Through a bioinformatics analysis of a sunflower transcriptome database, we found sequences that are homologous to dicotyledon and monocotyledon fructan synthesis genes. A HPLC analysis of stem sugar composition revealed the presence of low amounts of 1-kestose, while a drastic enhancement of endogenous sucrose levels by capitulum removal did not promote 1-kestose accumulation. This suggests that the regulation of fructan synthesis in this species may differ from the currently best known model, mainly derived from research on Poaceae, where sucrose acts as both a signaling molecule and substrate, in the induction of fructan synthesis. Thus, sunflower might potentially constitute a fructanbearing species, which could result in an improvement of its performance as a grain crop. However, a large effort is needed to elucidate how this up to now unsuspected potential could be effectively expressed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Frontiers Media
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
Sunflower
dc.subject
Fructan Regulation
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1-Sst
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1-Fft
dc.subject
Sucrose
dc.subject.classification
Otras Agricultura, Silvicultura y Pesca
dc.subject.classification
Agricultura, Silvicultura y Pesca
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CIENCIAS AGRÍCOLAS
dc.title
Sunflower: a potential fructan-bearing crop?
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-01-02T18:36:16Z
dc.identifier.eissn
1664-462X
dc.journal.volume
6
dc.journal.pagination
1-6; 798
dc.journal.pais
Suiza
dc.journal.ciudad
Lausanne
dc.description.fil
Fil: Martínez Noël, Giselle María Astrid. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones En Biodiversidad y Biotecnología; Argentina
dc.description.fil
Fil: Dosio, Guillermo Aníbal Adrián. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
dc.description.fil
Fil: Puebla, Andrea F.. Instituto Nacional de Tecnología Agropecuaria. Centro Nacional de Investigaciones Agropecuarias. Centro de Investigación de Ciencias Veterinarias y Agronómicas. Instituto de Biotecnología; Argentina
dc.description.fil
Fil: Insani, Ester M.. Instituto Nacional de Tecnología Agropecuaria. Centro Nacional de Investigaciones Agropecuarias. Centro de Investigación de Ciencias Veterinarias y Agronómicas. Instituto de Biotecnología; Argentina
dc.description.fil
Fil: Tognetti, Jorge A.. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina
dc.journal.title
Frontiers in Plant Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.3389/fpls.2015.00798
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://journal.frontiersin.org/article/10.3389/fpls.2015.00798/full
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4600902/
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