Biochemical Responses to True and Bicarbonate-Induced Iron Deficiency in Grapevine Genotypes

Ksouri, Riadh; M’rah, Sabah; Gharsalli, Mohamed; Lachâal, Mokhtar

doi:10.1080/01904160500476897

Cited by 46 publications

(34 citation statements)

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“…In contrast, the FCR activity was not affected by iron deficiency in the T. salsuginea plant. The induction of root FCR activity was correlated to the tolerance to Fe deficiency in several species, as it was reported for lettuce (Msilini et al, 2012), chickpea (Mahmoudi et al, 2005), grapevine (Ksouri et al, 2006) and medicago (M'sehli et al, 2009). Several lines of evidence support the role of PEP-carboxylase (PEPC) in the adaptation of plants to environmental changes.…”

Section: Discussionmentioning

confidence: 66%

Arabidopsis thaliana Tolerates Iron Deficiency more than Thellungiella Salsuginea by Inducing Metabolic Changes at the Root Level

Msilini¹,

Ferhi²,

Chebbi³

et al. 2015

Acta Biologica Cracoviensia S. Botanica

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Several studies have used A. thaliana as a model to identify the physiological and molecular mechanisms underlying iron deficiency tolerance in plants. Here, Arabidopsis thaliana and Thellungiella salsuginea were used to investigate the differential responses to iron deficiency of these two species. Plants were cultivated in hydroponic medium containing 5 or 0 μM Fe, for 10 days. Results showed that rosette biomass was more reduced in T. salsuginea than in A. thaliana when grown on Fe-deficient medium. As a marker for iron deficiency tolerance, the induction of ferric chelate reductase (FCR) and phosphoenolpyruvate carboxylase (PEPC) activities was observed only in A. thaliana roots. In addition, we found that the accumulation of phenolic acids in roots of N1438 ecotype of A. thaliana was stimulated by Fe deficiency. Furthermore, an increase of flavonoids content in the root and exudates was observed under Fe-deficiency in this ecotype. Unlike other abiotic stresses, it appears that iron deficiency effects were more pronounced in Thellungiella than in Arabidopsis. The higher tolerance of the Arabidopsis plant to iron deficiency may be due to the metabolic changes occurring in the roots.K Ke ey y w wo or rd ds s: : Arabidopsis thaliana, enzymatic activities, iron deficiency, Thellungiella salsuginea, polyphenol production.

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Section: Discussionmentioning

confidence: 66%

Arabidopsis thaliana Tolerates Iron Deficiency more than Thellungiella Salsuginea by Inducing Metabolic Changes at the Root Level

Msilini¹,

Ferhi²,

Chebbi³

et al. 2015

Acta Biologica Cracoviensia S. Botanica

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“…In another work, Bavaresco, Fraschini, & Perino (1993) compared the response of 140 Ruggeri and 101-14 rootstocks to iron chlorosis showing that the iron-efficient rootstock (140 Ruggeri) did not induce chlorosis when growing on the calcareous soil, while the opposite occurred with the iron-inefficient rootstock (101-14). Ksouri, M'rah, Gharsalli, & Lachaâl (2006) found that the high tolerance of 140 Ruggeri to Fe-chlorosis is partially due to its high root Fe(III)-reductase activity and the ability of this rootstock to release phenolic compounds in the medium (Ksouri et al, 2006). Currently this rootstock is largely employed in south Mediterranean and North Africa viticulture areas, characterized by lime soils and dry environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Grapevine rootstock effects on abiotic stress tolerance

Corso¹,

Bonghi²

2014

Plant Sci Today

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Amongst 60 species within the Vitis genus, Vitis vinifera L. is the mostly used species for the production of wine and distilled liquors. Before the devastation of European viticulture caused by the introduction of phylloxera from North America, varieties of V. vinifera used commercially for wine production in Europe were traditionally grown on their own roots. Subsequently, the use of rootstocks from the pest's origin was introduced to provide resistance to this and other deleterious diseases and to save the fate of European viticulture. Rootstocks have been bred from a number of Vitis species and are known, in addition to the enhanced resistance to phylloxera and other pathogens, confer tolerance to abiotic stresses (e.g. drought, high salinity and Fe-deficiency) and to alter specific aspects of harvest/postharvest fruit quality of a scion. This review summarizes recent data related to the responses of grapevine rootstocks to abiotic stresses, with particular attention to drought, salinity and iron chlorosis.

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“…En estudios anteriores, se observó que dentro de una misma especie, existen genotipos sensibles y tolerantes a la clorosis férrica, y que difieren en su capacidad para acidificar la rizosfera (Rabotti y Zocchi, 2006;Rabotti et al, 1995;Tagliavini et al, 1995;Wey et al, 1997;Vizzotto et al, 1999;Dell'Orto et al, 2000b;Ksouri et al, 2006;Donnini et al, 2009;Jelali et al, 2010a). En un estudio sobre cítricos, Treeby y Uren (1993) observaron que las especies más tolerantes a la clorosis disminuían el pH de la solución nutritiva en respuesta a la deficiencia de Fe, mientras que los menos tolerantes no tenían esta capacidad tan desarrollada.…”

Section: Discussionunclassified

“…Por otro lado, las altas temperaturas producen la degradación de fitosideróforos, lo cual afecta directamente a la absorción del Fe en plantas de estrategia II (Bergmann, 1992 , guisante (Jelali et al, 2010a), vid (Tagliavini et al, 1995;Dell'Orto et al, 2000a;Ksouri et al, 2006), kiwi (Vizzotto et al, 1999), melocotón (Gogorcena et al, 2004;Jiménez et al, 2008Jiménez et al, , 2011 y cítricos (Treeby y Uren, 1993;Manthey et al, 1994;Pestana et al, 2005;Castle et al, 2009). …”

Section: Factores Ambientalesunclassified

“…1.5.1.1 Acidificación de la rizosfera Uno de los mecanismos fisiológicos que se estimula en las plantas que desarrollan la estrategia I en condiciones de deficiencia de Fe es la capacidad de acidificación de la rizosfera (Rabotti y Zocchi, 2006;Rabotti et al, 1995;Dell'Orto et al, 2000b;Ksouri et al, 2006). Las raíces de estas plantas producen un descenso del pH de la solución en la que crecen debido a la activación de una bomba de protones dependiente de ATP, denominada protón-ATPasa (Welkie y Miller, 1993;Susín et al, 1996), situada en la membrana plasmática de las células subapicales de la raíz (Toulon et al, 1992).…”

Section: Estrategia Iunclassified

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Respuestas Del Sistema De Absorción De Hierro en Las Raíces De Los Cítricos Ante Diferentes Condiciones Clorosantes Del Medio

Cuenca¹,

Rus²

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INFORMAN que,Dª Mary-Rus Martínez Cuenca, Ingeniera Agrónoma, ha realizado bajo nuestra dirección el trabajo que, con el título "Respuestas del sistema de absorción de hierro en las raíces de los cítricos ante diferentes condiciones clorosantes del medio", presenta para optar al grado de Doctora Ingeniera Agrónoma.Para que así conste a los efectos oportunos, firman el presente documento en Moncada a 28 de septiembre de 2012. Fdo. D. Francisco Legaz ParedesFdo. D. Eduardo Primo Millo RESUMENLa clorosis férrica es uno de los estreses abióticos más importantes para las plantas, y como tal, resulta un problema agrícola muy extendido especialmente para aquellos cultivos que se desarrollan en terrenos calizos, como es el caso de los cítricos en la Comunidad Valenciana.El objetivo de este trabajo fue caracterizar el sistema de absorción de hierro en los cítricos y su respuesta ante distintas situaciones clorosantes que comprometen la disponibilidad del elemento, provocando la deficiencia deFe en la planta. Los componentes del sistema de absorción del Feacidificación del medio, reducción del Fe(III), transporte a través de la membrana y alteración de la síntesis de ácidos orgánicos-, se analizaron a nivel fisiológico, bioquímico y molecular, en condiciones de ausencia de Fe externo, presencia de bicarbonato (HCO 3 -) y de otros micronutrientes como zinc (Zn) y manganeso (Mn). A més a més, s'aprecia que totes les respostes a la deficiència de Fe dels arrels estan metabòlicament relacionades les unes amb les altres i collaboren en l'absorció d'este element per la planta mitjançant la solubilització del Fe amb l'acidificació de la rizosfera, la reducció del ió Fe 3+ a Fe 2+ (més absorbible per la planta), i l'activació dels transportadors de ferro de la membrana plàsmica del a rrel. El nivell de tolerància dels cítrics a la clorosi fèrrica està determinat pel grau de resposta dels components del sistema d'absorció de Fe davant d'una situació clorosant, on el paper de l'enzim FC-R és especialment important. ABSTRACTIron chlorosis is one of the main abiotic stress factors in plants, and as such, is a widespread agricultural problem especially affecting those crops grown on calcareous soils, as in the case of citrus in the Valencia region.The aim of this study was to characterize the iron uptake system in

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Biochemical Responses to True and Bicarbonate-Induced Iron Deficiency in Grapevine Genotypes

Abstract: Biochemical responses to direct or bicarbonate-induced iron (Fe) deficiency were compared in two Tunisian native grapevine varieties, Khamri (tolerant) and Balta4 (sensitive), and a tolerant rootstock, 140Ru.

Cited by 46 publications

References 20 publications

Arabidopsis thaliana Tolerates Iron Deficiency more than Thellungiella Salsuginea by Inducing Metabolic Changes at the Root Level

Arabidopsis thaliana Tolerates Iron Deficiency more than Thellungiella Salsuginea by Inducing Metabolic Changes at the Root Level

Grapevine rootstock effects on abiotic stress tolerance

Respuestas Del Sistema De Absorción De Hierro en Las Raíces De Los Cítricos Ante Diferentes Condiciones Clorosantes Del Medio

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