Indole-3-acetaldoxime delays root iron-deficiency responses and modify auxin homeostasis in medicago truncatula

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dc.contributor.authorRoman, Angela
dc.contributor.authorMontenegro, Joaquín
dc.contributor.authorFraile, Laura
dc.contributor.authorUrra Rodríguez, Marina
dc.contributor.authorBuezo Bravo, Javier
dc.contributor.authorCornejo Ibergallartu, Alfonso
dc.contributor.authorMorán Juez, José Fernando
dc.contributor.authorGogorcena, Yolanda
dc.contributor.departmentCienciases_ES
dc.contributor.departmentZientziakeu
dc.contributor.departmentInstitute for Multidisciplinary Research in Applied Biology - IMABen
dc.contributor.departmentInstitute for Advanced Materials and Mathematics - INAMAT2en
dc.contributor.funderUniversidad Pública de Navarra / Nafarroako Unibertsitate Publikoaes
dc.date.accessioned2023-06-21T18:46:09Z
dc.date.available2023-06-21T18:46:09Z
dc.date.issued2023
dc.date.updated2023-06-21T18:37:55Z
dc.description.abstractIron (Fe) is an essential plant micronutrient, being a major limiting growth factor in calcareous soils. To increase Fe uptake, plants induce lateral roots growth, the expression of a Fe(III)-chelate reductase (FCR), a Fe(II)-transporter and a H+-ATPase and the secretion of flavins. Furthermore, auxin hormone family is involved in the Fe-deficiency responses but the action mechanism remains elusive. In this work, we evaluated the effect of the auxin-precursor indole-3-acetaldoxime (IAOx) on hydroponically grown Medicago truncatula plants under different Fe conditions. Upon 4-days of Fe starvation, the pH of the nutrient solution decreased, while both the FCR activity and the presence of flavins increased. Exogenous IAOx increased lateral roots growth contributing to superroot phenotype, decreased chlorosis, and delayed up to 3-days the pH-decrease, the FCR-activity increase, and the presence of flavins, compared to Fe-deficient plants. Gene expression levels were in concordance with the physiological responses. Results: showed that IAOx was immediately transformed to IAN in roots and shoots to maintain auxin homeostasis. IAOx plays an active role in iron homeostasis delaying symptoms and responses in Fe-deficient plants. We may speculate that IAOx or its derivatives remobilize Fe from root cells to alleviate Fe-deficiency. Overall, these results point out that the IAOx-derived phenotype may have advantages to overcome nutritional stresses.en
dc.description.sponsorshipThis work was supported by the Spanish Research Agency [grant AGL2017-83358-R funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”] and the Government of Aragón [grant A09_23R], co-financed with FEDER funds; and the CSIC [grant 2020AEP119] to Y.G. This research was partially supported by [grants AGL2017-52396-P funded from MINECO (co-financed with FEDER funds) and PID-2020-1177 03GB-I00 from the Public University of Navarre] to J.F.M. J.M., M.U. and J.B. were the recipients of pre-doctoral contracts awarded by the Government of Aragon, Government of Navarre, and Public University of Navarre, Spain, respectively. A.R. was hired [grants AGL2017-83358-R and 2020AEP119]. We acknowledge support of the publication fee by the CSIC Gold Open Access Publication Support Initiative through its Unit of Information Resources for Research (URICI).en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRoman, A., Montenegro, J., Fraile, L., Urra, M., Buezo, J., Cornejo, A., Moran, J. F., Gogorcena, Y. (2023) Indole-3-acetaldoxime delays root iron-deficiency responses and modify auxin homeostasis in medicago truncatula. Plant Science, 332, 1-13. https://doi.org/10.1016/j.plantsci.2023.111718.en
dc.identifier.doi10.1016/j.plantsci.2023.111718
dc.identifier.issn0168-9452
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/45603
dc.language.isoengen
dc.publisherElsevieren
dc.relation.ispartofPlant Science 332 (2023) 111718en
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2017-83358-R/ES/
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI//AGL2017-52396-P
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI//PID2020-117703GB-I00
dc.relation.publisherversionhttps://doi.org/10.1016/j.plantsci.2023.111718
dc.rights© 2023 The Authors. This is an open access article under the CC BY license.en
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectMax 6: Iron chlorosisen
dc.subjectFerric-Chelate Reductaseen
dc.subjectpH-decreaseen
dc.subjectFlavinsen
dc.subjectSuperrooten
dc.subjectIAOx-pathwayen
dc.titleIndole-3-acetaldoxime delays root iron-deficiency responses and modify auxin homeostasis in medicago truncatulaen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
relation.isAuthorOfPublication36b6f084-56a0-4d76-8989-8812a1ed5e80
relation.isAuthorOfPublicationeabef884-715a-460f-b2a1-e62568297b4a
relation.isAuthorOfPublicationcad13109-2660-4ec4-80c8-e4bcc0685382
relation.isAuthorOfPublication.latestForDiscovery36b6f084-56a0-4d76-8989-8812a1ed5e80

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