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Metabolites released by poaceae roots under iron‐deficient conditions

2025-02-09Journal article Restricted access
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dc.contributor.authorSaavedra, Teresa
dc.contributor.authorPestana, Maribela
dc.contributor.authorSilva, José Paulo da
dc.contributor.authorCorreia, Pedro José
dc.date.accessioned2025-02-25T10:56:27Z
dc.date.available2025-02-25T10:56:27Z
dc.date.issued2025-02-09
dc.description.abstractBackgroundStrategy-II, as a response mechanism, is limited to grasses under Fe deficiency and is based on the secretion of phytosiderophores (PS) into the rhizosphere, in conjunction with the induction of a high-affinity system for Fe(III)-PS uptake. This strategy has a significant ecological impact and is essential for sustainable agriculture.AimsIn this work, we studied the physiological and metabolic responses of Poa pratensis L., Lolium perenne L., and Festuca rubra L. when grown in nutrient solution under Fe deficiency.MethodsAfter chlorosis appeared, we analyzed leaf pigment concentrations, biomass, and ferric chelate reductase (FCR) activity of root tips. We also screened the metabolites released by root exudates using liquid chromatography coupled to high-resolution mass spectrometry (LC-HRMS).ResultsPlants grown with low or no Fe availability had significantly lower fresh weight (FW) and leaf chlorophyll (Chl) but higher FCR activity as compared to control plants. The root exudates contain carboxylic acids, phenolic acids, polyphenols, and peptides, among others. An increase in carboxylic acid content was correlated with Fe chlorosis in all species studied. However, the specific compounds that were upregulated varied depending on the species. Root exudates contained several upregulated metabolites that were identified as small peptides and/or peptide derivates based on their spectral data and formulas that are compatible with small peptides and/or peptide derivatives.ConclusionsThese results, together with the metal binding/chelation properties of many peptides, highlight the release of these compounds and/or their derivatives as a response of grasses to increase the Fe bioavailability.eng
dc.description.sponsorshipALG-01-0145-FEDER-022121;
dc.identifier.doi10.1002/jpln.202400307
dc.identifier.eissn1522-2624
dc.identifier.issn1436-8730
dc.identifier.urihttp://hdl.handle.net/10400.1/26810
dc.language.isoeng
dc.peerreviewedyes
dc.publisherWiley
dc.relationMediterranean Institute for Agriculture, Environment and Development
dc.relationCHANGE - Global Change and Sustainability Institute
dc.relationAlgarve Centre for Marine Sciences
dc.relationEstratégias inovadoras para otimizar o uso do ferro em culturas hortícolas.
dc.relationMediterranean Institute for Agriculture, Environment and Development
dc.relation.ispartofJournal of Plant Nutrition and Soil Science
dc.rights.uriN/A
dc.subjectFe chlorosis
dc.subjectGrasses
dc.subjectIron-chelate reductase
dc.subjectPeptides
dc.subjectRoot exudates
dc.titleMetabolites released by poaceae roots under iron‐deficient conditionseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMediterranean Institute for Agriculture, Environment and Development
oaire.awardTitleCHANGE - Global Change and Sustainability Institute
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleEstratégias inovadoras para otimizar o uso do ferro em culturas hortícolas.
oaire.awardTitleMediterranean Institute for Agriculture, Environment and Development
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F05183%2F2020/PT
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oaire.citation.titleJournal of Plant Nutrition and Soil Science
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oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameSaavedra
person.familyNamePestana
person.familyNameSilva
person.familyNameCorreia
person.givenNameTeresa
person.givenNameMaribela
person.givenNameJosé Paulo da
person.givenNamePedro José
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