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dc.contributor.authorRombolà, Adamo Domenico-
dc.contributor.authorBrüggemann, Wolfgang-
dc.contributor.authorLópez-Millán, Ana Flor-
dc.contributor.authorTagliavini, Massimo-
dc.contributor.authorAbadía Bayona, Javier-
dc.contributor.authorMarangoni, Bruno-
dc.contributor.authorMoog, Petra R.-
dc.date.accessioned2014-07-08T11:25:11Z-
dc.date.available2014-07-08T11:25:11Z-
dc.date.issued2002-08-
dc.identifierissn: 0829-318X-
dc.identifier.citationTree Physiology 22 (12): 869-875 (2002)-
dc.identifier.urihttp://hdl.handle.net/10261/99627-
dc.description.abstractA comparative study of two kiwifruit genotypes (Actinidia deliciosa (A. Chev.) C.F. Liang et A.R. Ferguson var. deliciosa) with different tolerance to iron (Fe) deficiency was conducted to identify biochemical features associated with tolerance to Fe deficiency. After 14 days of growth in hydroponic culture under Fe-deficient and Fe-sufficient conditions, leaf chlorophyll concentration, activities of ferric chelate reductase (FCR), phosphoenolpyruvate carboxylase (PEPC) and citrate synthase in root extracts, concentrations of organic acids in roots, leaves and xylem sap, and xylem sap pH were measured. In response to Fe deficiency, the tolerant genotype D1 showed: (i) higher FCR activity associated with a longer lasting induction of FCR; (ii) higher PEPC activity; (iii) higher concentrations of citric acid in roots; and (iv) lower xylem sap pH compared with the susceptible genotype Hayward. These findings imply that induction of FCR and PEPC activities in roots in response to Fe deficiency are important physiological adaptations enabling Fe-efficient kiwifruit plants to tolerate Fe deficiency.-
dc.description.sponsorshipThe study was supported by grants AIR3-CT94-1973 to B.M., W.B. and J.A., MURST ex 40% (Roma, grant Cofin 1998) to B.M. and MURST-Ministerio del Ciencia y Tecnología “Azioni Integrate/Acción integrada” (HI-1999-0158) to J.A. and M.T. The Centro Nazionale delle Ricerche (Italy) provided financial support for travel to A.D. Rombolà.-
dc.publisherHeron Publishing-
dc.rightsclosedAccess-
dc.subjectOrganic acids-
dc.subjectIron nutrition-
dc.subjectFerric chelate reductase-
dc.subjectPhosphoenol pyruvate carboxylase-
dc.titleBiochemical responses to iron deficiency in kiwifruit (Actinidia deliciosa)-
dc.typeartículo-
dc.identifier.doi10.1093/treephys/22.12.869-
dc.relation.publisherversionhttp://dx.doi.org/10.1093/treephys/22.12.869-
dc.date.updated2014-07-08T11:25:11Z-
dc.description.versionPeer Reviewed-
dc.language.rfc3066eng-
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