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IAOx induces the SUR phenotype and differential signalling from IAA under different types of nitrogen nutrition in Medicago truncatula roots

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dc.contributor.authorBuezo Bravo, Javier
dc.contributor.authorEsteban Terradillos, Raquel
dc.contributor.authorCornejo Ibergallartu, Alfonso
dc.contributor.authorLópez Gómez, Pedro
dc.contributor.authorMarino Bilbao, Daniel
dc.contributor.authorChamizo Ampudia, Alejandro
dc.contributor.authorGil Idoate, María José
dc.contributor.authorMartínez Merino, Víctor
dc.contributor.authorMorán Juez, José Fernando
dc.contributor.departmentZientziakeu
dc.contributor.departmentInstitute for Multidisciplinary Research in Applied Biology - IMABen
dc.contributor.departmentInstitute for Advanced Materials and Mathematics - INAMAT2en
dc.contributor.departmentCienciases_ES
dc.contributor.funderUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoaes
dc.date.accessioned2019-08-19T11:10:53Z
dc.date.available2021-10-01T23:00:12Z
dc.date.issued2019
dc.description.abstractIndole-3-acetaldoxime (IAOx) is a particularly relevant molecule as an intermediate in the pathway for tryptophan-dependent auxin biosynthesis. The role of IAOx in growth-signalling and root phenotype is poorly studied in cruciferous plants and mostly unknown in non-cruciferous plants. We synthesized IAOx and applied it to M. truncatula plants grown axenically with NO3-, NH4+ or urea as the sole nitrogen source. During 14 days of growth, we demonstrated that IAOx induced an increase in the number of lateral roots, especially under NH4+ nutrition, while elongation of the main root was inhibited. This phenotype is similar to the phenotype known as “superroot” previously described in SUR1- and SUR2-defective Arabidopsis mutants. The effect of IAOx, IAA or the combination of both on the root phenotype was different and dependent on the type of N-nutrition. Our results also showed the endogenous importance of IAOx in a legume plant in relation to IAA metabolism, and suggested IAOx long-distance transport depending on the nitrogen source provided. Finally, our results point out to CYP71A as the major responsible enzymes for IAA synthesis from IAOx.en
dc.description.sponsorshipThis work was supported by the grants AGL2017-86293-P, CGL2017-84723-P (IBERYCA) and AGL2014-52396-P, from the Spanish Ministry of Economy and Competitiveness (MINECO) and the Ministry of Science Innovation and Universities (MICINN) and by the Basque Government (IT932-16). JB and PL-G are holders of PhD fellowships from the Public University of Navarre. ACh received a Juan de la Cierva initiation grant FJCI-2016-27905 and RE received a Juan de la Cierva incorporation grant IJCI-2014-21452. This research was also supported by the Basque Government through the BERC 2018-2021 program, and by the Spanish Ministry of Science, Innovation and Universities through the BC3 María de Maeztu excellence accreditation (MDM-2017-0714).en
dc.embargo.lift2021-10-01
dc.embargo.terms2021-10-01
dc.format.extent31 p.
dc.format.mimetypeapplication/pdfen
dc.format.mimetypeapplication/zipen
dc.identifier.doi10.1016/j.plantsci.2019.110176
dc.identifier.issn0168-9452 (Print)
dc.identifier.issn1873-2259 (Electronic)
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/34425
dc.language.isoengen
dc.publisherElsevieren
dc.relation.ispartofPlant Science, 287 (2019) 110176en
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2017-86293-P/ES/en
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2017-84723-P/ES/en
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO//AGL2014-52396-P/ES/en
dc.relation.publisherversionhttps://doi.org/10.1016/j.plantsci.2019.110176
dc.rights© 2019 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0.en
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAmmoniumen
dc.subjectAuxinen
dc.subjectIndole-3-acetaldoximeen
dc.subjectNitrateen
dc.subjectOximesen
dc.subjectPhenotypeen
dc.subjectSuperrooten
dc.subjectRooten
dc.subjectUreaen
dc.subjectCYP71Aen
dc.titleIAOx induces the SUR phenotype and differential signalling from IAA under different types of nitrogen nutrition in Medicago truncatula rootsen
dc.typeinfo:eu-repo/semantics/article
dc.type.versionVersión aceptada / Onetsi den bertsioaes
dc.type.versioninfo:eu-repo/semantics/acceptedVersionen
dspace.entity.typePublication
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relation.isAuthorOfPublication.latestForDiscovery36b6f084-56a0-4d76-8989-8812a1ed5e80

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