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The root ferric-chelate reductase of Ceratonia siliqua (L.) and Poncirus trifoliata (L.) Raf. responds differently to a low level of iron

2012Journal article Open access
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dc.contributor.authorPestana, M.
dc.contributor.authorGama, Florinda
dc.contributor.authorSaavedra, Teresa
dc.contributor.authorVarennes, Amarilis de
dc.contributor.authorCorreia, P. J.
dc.date.accessioned2012-04-19T14:16:28Z
dc.date.available2012-04-19T14:16:28Z
dc.date.issued2012
dc.date.updated2012-03-14T14:46:07Z
dc.description.abstractIron (Fe) deficiency is a common nutritional disorder in several crops grown in calcareous soils, but some species are well adapted to these conditions. A hydroponic experiment was conducted to compare the response of a calcicole species Ceratonia siliqua L. (carob) and of Poncirus trifoliata (L.) Raf., a citrus rootstock very sensitive to Fe deficiency. Rootstocks from both species were grown in nutrient solutions without Fe (0 M Fe), with 1 M Fe, and with 10 M Fe (carob) or 40 M Fe (P. trifoliata). A low level of Fe or its absence in the nutrient solution led to a significant decrease in P. trifoliata vegetative growth and in SPAD readings. The root activity of ferric-chelate reductase (FC-R), a key enzyme in Fe uptake, was low in the absence or with high levels of Fe. Its highest values were in roots exposed to a low level of Fe as described in several sensitive species. In contrast, the activity of FC-R was very high in carob in the absence of Fe and was decreased sharply even when only a low level of Fe was present in the nutrient solution. Plant growth and SPAD readings in the leaves of carob were similar in all treatments. Carob seems to maintain a large activity of root FC-R that may ensure enough Fe to satisfy plant demand. The fact that it presents a slow growing pattern may also contribute to the tolerance of this species to low levels of external Fe.por
dc.identifier.citationPestana, M.; Gama, F. The root ferric-chelate reductase of Ceratonia siliqua (L.) and Poncirus trifoliata (L.) Raf. responds differently to a low level of iron. Scientia Horticulturae, 135, 1, 65-67, 2012.por
dc.identifier.issn03044238
dc.identifier.otherAU: PCO01134;
dc.identifier.urihttp://hdl.handle.net/10400.1/1061
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectCarob-treepor
dc.subjectCitruspor
dc.subjectHydroponicspor
dc.subjectMicronutrientpor
dc.subjectRelative growth ratepor
dc.subjectRootstockspor
dc.titleThe root ferric-chelate reductase of Ceratonia siliqua (L.) and Poncirus trifoliata (L.) Raf. responds differently to a low level of ironpor
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FAGR-AAM%2F100115%2F2008/PT
oaire.citation.endPage67por
oaire.citation.issue135(1)por
oaire.citation.startPage65por
oaire.citation.titleScientia Horticulturaepor
oaire.fundingStream3599-PPCDT
person.familyNamePestana
person.familyNameGama
person.familyNameSaavedra
person.familyNameCorreia
person.givenNameMaribela
person.givenNameFlorinda
person.givenNameTeresa
person.givenNamePedro José
person.identifier74793
person.identifier.ciencia-id791E-9EC5-55C9
person.identifier.ciencia-idB61D-C9B5-8AE2
person.identifier.ciencia-id3F1F-53D6-1014
person.identifier.ciencia-id2E15-3704-0F55
person.identifier.orcid0000-0002-4319-1682
person.identifier.orcid0000-0001-6948-0055
person.identifier.orcid0000-0002-2125-6342
person.identifier.orcid0000-0003-4927-1189
person.identifier.ridF-5741-2010
person.identifier.scopus-author-id7005146039
person.identifier.scopus-author-id35770492700
person.identifier.scopus-author-id36467141800
person.identifier.scopus-author-id7006210686
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typearticlepor
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