Phosphate acquisition efficiency in wheat is related to root:shoot ratio, strigolactone levels, and PHO2 regulation

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datacite.alternateIdentifier.citationJournal of Experimental Botany, 70 (20), 5642-5631, 2019
datacite.alternateIdentifier.doi10.1093/jxb/erz349
datacite.alternateIdentifier.issn0022-0957
datacite.creatorde Souza Campos, Pedro M.
datacite.creatorCornejo, Pablo E.
datacite.creatorRial, Carlos
datacite.creatorBorie, Fernando R.
datacite.creatorVarela, Rosa Maria
datacite.creatorSeguel, Alex
datacite.creatorLopez-Raez, Juan Antonio
datacite.date2019
datacite.rightsAcceso abierto
datacite.subjectP Signalling
datacite.subjectPhosphate Starvation Responses
datacite.subjectPhosphate Transporters
datacite.subjectRoot Traits
datacite.subjectStrigolactones
datacite.subjectWheat
datacite.titlePhosphate acquisition efficiency in wheat is related to root:shoot ratio, strigolactone levels, and PHO2 regulation
dc.description.abstractInorganic phosphorus (Pi) fertilizers are expected to become scarce in the near future; so, breeding for improved Pi acquisition-related root traits would decrease the need for fertilizer application. This work aimed to decipher the physiological and molecular mechanisms underlying the differences between two commercial wheat cultivars (Crac and Tukan) with contrasting Pi acquisition efficiencies (PAE). For that, four independent experiments with different growth conditions were conducted. When grown under non-limiting Pi conditions, both cultivars performed similarly. Crac was less affected by Pi starvation than Tukan, presenting higher biomass production, and an enhanced root development, root:shoot ratio, and root efficiency for Pi uptake under this condition. Higher PAE in Crac correlated with enhanced expression of the Pi transporter genes TaPht1;2 and TaPht1;10. Crac also presented a faster and higher modulation of the IPS1-miR399-PHO2 pathway upon Pi starvation. Interestingly, Crac showed increased levels of strigolactones, suggesting a direct relationship between this phytohormone and plant P responses. Based on these findings, we propose that higher PAE of the cultivar Crac is associated with an improved P signalling through a fine-tuning modulation of PHO2 activity, which seems to be regulated by strigolactones. This knowledge will help to develop new strategies for improved plant performance under P stress conditions. © 2020 Elsevier B.V., All rights reserved.
dc.formatPDF
dc.identifier.issn1460-2431
dc.language.isoen
dc.publisherOxford University Press
dc.sourceJournal of Experimental Botany
dspace.entity.typePublication
oaire.citationEdition2019
oaire.citationEndPage5642
oaire.citationIssue20
oaire.citationStartPage5631
oaire.citationTitleJournal of Experimental Botany
oaire.citationVolume70
oaire.fundingReferenceCONICYT FONDECYT 11160385, 1170264 (Regulares)
oaire.fundingReferenceCONICYT Doctorado Nacional 2016-21161474
oaire.fundingReferenceCONICYT PAI T7817120011
oaire.fundingReferenceCONICYT FONDAP 15130015
oaire.fundingReferenceMINECO España AGL2015-64990-C2-1R
oaire.fundingReferenceBIOREN-UFRO (apoyo técnico)
oaire.fundingReferenceCampex Baer® (apoyo agronómico)
oaire.licenseConditionObra bajo licencia Creative Commons Atribución-No Comercial 4.0 Internacional
oaire.licenseCondition.urihttps://creativecommons.org/licenses/by-nc/4.0/
oaire.resourceTypeArtículo
oaire.resourceType.enArticle
uct.catalogadorjvu
uct.comunidadRecursos Naturalesen_US
uct.departamentoDepartamento de Ciencias Agropecuarias y Acuícolas
uct.facultadFacultad de Recursos Naturales
uct.indizacionScience Citation Index Expanded - SCIE
uct.indizacionScopus
uct.indizacionPubMed
uct.indizacionCAB Abstracts
uct.indizacionBIOSIS Previews
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