Full metadata record
DC FieldValueLanguage
dc.creatorFuentes-Ramirez, M. (Marta)-
dc.creatorBacaicoa, E. (Eva)-
dc.creatorRivero, M. (Mikel)-
dc.creatorZamarreño, A.M. (Angel Maria)-
dc.creatorGarcía-Mina, J.M. (José María)-
dc.identifier.citationFuentes-Ramírez, M. (Marta); Bacaicoa, E.; Rivero, M.; et al. "Complementary evaluation of iron deficiency root responses to assess the effectiveness of different iron foliar applications for chlorosis remediation". Frontiers In Plant Science. 9, 2018, 351es
dc.description.abstractIron deficiency in plants is caused by a low availability of iron in the soil, and its main visual symptom is leaf yellowing due to a decrease in chlorophyll content, along with a reduction in plant growth and fruit quality. Foliar sprays with Fe compounds are an economic alternative to the treatment with expensive synthetic Fe-chelates applied to the soil, although the efficacy of foliar treatments is rather limited. Generally, plant response to Fe-foliar treatments is monitored by measuring chlorophyll content (or related parameters as SPAD index). However, different studies have shown that foliar Fe sprays cause a local regreening and that translocation of the applied Fe within the plant is quite low. In this context, the aim of this study was to assess the effects of foliar applications of different Fe compounds [FeSO4, Fe(III)-EDTA, and Fe(III)-heptagluconate] on Fe-deficient cucumber plants, by studying the main physiological plant root responses to Fe deficiency [root Fe(III) chelate reductase (FCR) activity; acidification of the nutrient solution; and expression of the Fe deficiency responsive genes encoding FCR, CsFRO1, Fe(II) root transporter CsIRT1, and two plasma membrane H+-ATPases, CsHA1 and CsHA2], along with SPAD index, plant growth and Fe content. The results showed that the overall assessment of Fe-deficiency root responses improved the evaluation of the efficacy of the Fe-foliar treatments compared to just monitoring SPAD indexes. Thus, FCR activity and expression of Fe-deficiency response genes, especially CsFRO1 and CsHA1, preceded the trend of SPAD index and acted as indicators of whether the plant was sensing or not metabolically active Fe due to the treatments. Principal component analysis of the data also provided a graphical tool to evaluate the evolution of plant responses to foliar Fe treatments with time.-
dc.subjectFe plant nutrition-
dc.subjectFe deficiency-
dc.subjectFoliar Fe fertilization-
dc.subjectFe chelates-
dc.subjectFe(III)-chelate reductase-
dc.subjectFe (II) transporter-
dc.subjectPM H+-ATPase-
dc.titleComplementary evaluation of iron deficiency root responses to assess the effectiveness of different iron foliar applications for chlorosis remediation-
dc.description.noteThis is an open access article distributed under the Creative Commons: Atribution License (cc BY)-

Files in This Item:
4.25 MB
Adobe PDF

Items in Dadun are protected by copyright, with all rights reserved, unless otherwise indicated.