Effects of cadmium on gas exchange and phytohormone contents in citrus

López-Climent, María F.; Arbona, Vicent; Pérez-Clemente, Rosa M.

doi:10.1007/s10535-011-0028-4

Cited by 53 publications

(35 citation statements)

References 23 publications

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“…To this regard, the selection of markers for phenotype assessment is not trivial. For instance, when considering tolerance to salt stress, the ability to maintain growth under high salinity even with high Na + leaf concentrations, was considered a tolerance trait in barley [113]. This is in contrast with salt stress mechanisms in other glycophytes, for instance, in citrus where the ability to reduce Cl − uptake to the aerial part is considered a tolerance trait [114].…”

Section: Effect Of Abiotic Stress On Plant Biochemistry: Metabolitmentioning

confidence: 99%

Metabolomics as a Tool to Investigate Abiotic Stress Tolerance in Plants

Arbona

Manzi²,

Ollas

2013

IJMS

542

316

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Metabolites reflect the integration of gene expression, protein interaction and other different regulatory processes and are therefore closer to the phenotype than mRNA transcripts or proteins alone. Amongst all –omics technologies, metabolomics is the most transversal and can be applied to different organisms with little or no modifications. It has been successfully applied to the study of molecular phenotypes of plants in response to abiotic stress in order to find particular patterns associated to stress tolerance. These studies have highlighted the essential involvement of primary metabolites: sugars, amino acids and Krebs cycle intermediates as direct markers of photosynthetic dysfunction as well as effectors of osmotic readjustment. On the contrary, secondary metabolites are more specific of genera and species and respond to particular stress conditions as antioxidants, Reactive Oxygen Species (ROS) scavengers, coenzymes, UV and excess radiation screen and also as regulatory molecules. In addition, the induction of secondary metabolites by several abiotic stress conditions could also be an effective mechanism of cross-protection against biotic threats, providing a link between abiotic and biotic stress responses. Moreover, the presence/absence and relative accumulation of certain metabolites along with gene expression data provides accurate markers (mQTL or MWAS) for tolerant crop selection in breeding programs.

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Section: Effect Of Abiotic Stress On Plant Biochemistry: Metabolitmentioning

confidence: 99%

Metabolomics as a Tool to Investigate Abiotic Stress Tolerance in Plants

Arbona

Manzi²,

Ollas

2013

IJMS

542

316

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“…Among pollutants, heavy metals such as cadmium (Cd), copper (Cu), lead and mercury are of particular concern as they are non-biodegradable and strongly phytotoxic. Furthermore, at high concentration, they not only limit plant productivity but also threaten human health (López-Climent et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

NaCl protects against Cd and Cu-induced toxicity in the halophyte Atriplex halimus

Bankaji¹,

Sleimi²,

Gómez-Cádenas

2017

Span. j. agric. res.

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The objective of the present work was to evaluate the extent of Cd-and Cu-induced oxidative stress and the antioxidant response triggered in the halophyte species Atriplex halimus after metallic trace elements exposure. Plants were treated for one month with Cd 2+ or Cu 2+ (400 µM) in the absence or presence of 200 mM NaCl in the irrigation solution. The interaction between salinity and heavy metal stress was analyzed in relation to plant growth, tissue ion contents (Na + , K + and Mg 2+ ), oxidative damage and antioxidative metabolism. Data indicate that shoot and root weight significantly decreased as a consequence of Cd 2+ -or Cu 2+ -induced stress. Metallic stress leads to unbalanced nutrient uptake by reducing the translocation of K + and Mg 2+ from the root to the shoot. The levels of malondialdehyde increased in root tissue when Cd, and especially Cu, were added to the irrigation solution, indicating that oxidative damage occurred. Results showed that NaCl gave a partial protection against Cd and Cu induced toxicity, although these contaminants had distinct influence on plant physiology. It can be concluded that salinity drastically modified heavy metal absorption and improved plant growth. Salinity also decreased oxidative damage, but differently in plants exposed to Cd or Cu stress.Additional key words: Atriplex halimus; oxidative damage; trace element toxicity; salinity Abbreviations used: APX (ascorbate peroxidase); CAT (catalase); DTNB (dinitrobenzoic acid); FW (fresh weight); GPX (guaiacol peroxidase); GSH (reduced glutathione); GSSG (oxidised glutathione); MDA (malondialdehyde); PC (phytochelatin); ROS (reactive oxygen species); SOD (superoxide dismutase); tGSH (total GSH) Authors' contributions: Cation determination assays: IB. Coordinated the obtention and culture of the plants and was responsible for conducting different experiments and the evaluation of plants: NS. Responsible of the study of the antioxidative system, evaluating the antioxidant enzymatic activities as well as MDA; he also was in charge of glutathione and phytochelatin content determination: AGC. Coordination of the works and preparing the manuscript: RMPC.Citation: Bankaji, I.; Sleimi, N.; Gómez-Cadenas, A.; Pérez-Clemente, R. M. (2016). NaCl protects against Cd and Cu-induced toxicity in the halophyte Atriplex halimus.

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“…However, the mechanism of Cd-induced stomatal closure is still poorly understood. Some studies reported increased production of abscisic acid (ABA) with increased Cd-exposure and suggested that ABA might regulate stomata closure in Cd-stressed conditions (Hsu & Kao, 2003Lòpez-Climent et al, 2011); however, in ABA-insensitive mutants of Arabidopsis thaliana (L.) Heynh Cd 2+ affected guard cell regulation in an ABA-independent manner by entering the cytosol via Ca 2+ channels (Perfus-Barbeoch et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Species-Specific Relationship between Transpiration and Cadmium Translocation in Lettuce, Barley and Radish

Ahkter¹,

Macfie²

2012

JPS

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Cadmium (Cd) may accumulate in plants to levels that are of concern in human diets. Our ability to predict the accumulation of Cd in plants is restricted by our poor understanding of the physiological processes that control Cd accumulation and translocation. A hydroponic experiment was carried out to test the hypothesis that the amount of Cd taken up and translocated to aboveground tissues is proportional to the volume of water transpired in lettuce (Lactuca sativa L.), barley (Hordeum vulgare L.) and radish (Raphanus sativus L.). Transpiration was measured as mass of water lost. Increased transpiration caused increased accumulation of Cd in plants; however, the proportion of total Cd translocated to the leaves ranged from 85% in lettuce to 66% in radish to only 21% in barley. Thus, factors controlling species-specific internal distribution of Cd are more important than transpiration in translocating Cd to aboveground tissues.

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Effects of cadmium on gas exchange and phytohormone contents in citrus

Cited by 53 publications

References 23 publications

Metabolomics as a Tool to Investigate Abiotic Stress Tolerance in Plants

Metabolomics as a Tool to Investigate Abiotic Stress Tolerance in Plants

NaCl protects against Cd and Cu-induced toxicity in the halophyte Atriplex halimus

Species-Specific Relationship between Transpiration and Cadmium Translocation in Lettuce, Barley and Radish

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