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Martínez LM, Fernández-Ocaña A, Rey PJ, Salido T, Amil-Ruiz F, Manzaneda AJ. Variation in functional responses to water stress and differentiation between natural allopolyploid populations in the Brachypodium distachyon species complex. Annals of Botany 2018; 121:1369-1382. [PMID: 29893879 PMCID: PMC6007385 DOI: 10.1093/aob/mcy037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 02/26/2018] [Indexed: 05/21/2023]
Abstract
Background and Aims Some polyploid species show enhanced physiological tolerance to drought compared with their progenitors. However, very few studies have examined the consistency of physiological drought response between genetically differentiated natural polyploid populations, which is key to evaluation of the importance of adaptive evolution after polyploidization in those systems where drought exerts a selective pressure. Methods A comparative functional approach was used to investigate differentiation of drought-tolerance-related traits in the Brachypodium species complex, a model system for grass polyploid adaptive speciation and functional genomics that comprises three closely related annual species: the two diploid parents, B. distachyon and B. stacei, and the allotetraploid derived from them, B. hybridum. Differentiation of drought-tolerance-related traits between ten genetically distinct B. hybridum populations and its ecological correlates was further analysed. Key Results The functional drought response is overall well differentiated between Brachypodium species. Brachypodium hybridum allotetraploids showed a transgressive expression pattern in leaf phytohormone content in response to drought. In contrast, other B. hybridum physiological traits correlated to B. stacei ones. Particularly, proline and water content were the traits that best discriminated these species from B. distachyon under drought. Conclusions After polyploid formation and/or colonization, B. hybridum populations have adaptively diverged physiologically and genetically in response to variations in aridity.
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Affiliation(s)
- Luisa M Martínez
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Jaén, Spain
| | - Ana Fernández-Ocaña
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Jaén, Spain
| | - Pedro J Rey
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Jaén, Spain
| | - Teresa Salido
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Jaén, Spain
| | - Francisco Amil-Ruiz
- Bioinformatics Unit, Central Service for Research Support (SCAI), University of Córdoba, Córdoba, Spain
| | - Antonio J Manzaneda
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, Jaén, Spain
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González-Robles A, Manzaneda AJ, Bastida JM, Harvey N, Jaime R, Salido T, Martínez LM, Fernández-Ocaña A, Alcántara JM, Rey PJ. Development and characterization of microsatellite primers in the endangered Mediterranean shrub Ziziphus lotus (Rhamnaceae). Appl Plant Sci 2016; 4:apps1600092. [PMID: 28101436 PMCID: PMC5238701 DOI: 10.3732/apps.1600092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 10/04/2016] [Indexed: 06/06/2023]
Abstract
PREMISE OF THE STUDY Microsatellite primers were developed to characterize and evaluate patterns of genetic diversity and structure in the endangered Mediterranean shrub Ziziphus lotus (Rhamnaceae). METHODS AND RESULTS Twenty microsatellite primers were developed for Z. lotus, of which 14 were polymorphic. We evaluated microsatellite polymorphism in 97 specimens from 18 Spanish and seven Moroccan populations. Between two and eight alleles were found per locus, and the average number of alleles was 5.54. Observed heterozygosity and expected heterozygosity ranged from 0.08 to 0.90 and from 0.08 to 0.82, respectively. Nine of these primers also amplified microsatellite loci in Z. jujuba. CONCLUSIONS The microsatellite markers described here will be useful in studies on genetic variation, population genetic structure, and gene flow in the fragmented habitat of this species. These markers are a valuable resource for designing appropriate conservation measures for the species in the Mediterranean range.
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Affiliation(s)
- Ana González-Robles
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, E-23071 Jaén, Spain
| | - Antonio J. Manzaneda
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, E-23071 Jaén, Spain
| | - Jesús M. Bastida
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, E-23071 Jaén, Spain
| | - Nick Harvey
- Genetic Marker Services, Brighton, United Kingdom
| | - Rafael Jaime
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, E-23071 Jaén, Spain
| | - Teresa Salido
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, E-23071 Jaén, Spain
| | - Luisa M. Martínez
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, E-23071 Jaén, Spain
| | - Ana Fernández-Ocaña
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, E-23071 Jaén, Spain
| | - Julio M. Alcántara
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, E-23071 Jaén, Spain
| | - Pedro J. Rey
- Departamento de Biología Animal, Biología Vegetal y Ecología, Universidad de Jaén, E-23071 Jaén, Spain
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Mata-Pérez C, Sánchez-Calvo B, Begara-Morales JC, Luque F, Jiménez-Ruiz J, Padilla MN, Fierro-Risco J, Valderrama R, Fernández-Ocaña A, Corpas FJ, Barroso JB. Transcriptomic profiling of linolenic acid-responsive genes in ROS signaling from RNA-seq data in Arabidopsis. Front Plant Sci 2015; 6:122. [PMID: 25852698 PMCID: PMC4362301 DOI: 10.3389/fpls.2015.00122] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 02/14/2015] [Indexed: 05/20/2023]
Abstract
Linolenic acid (Ln) released from chloroplast membrane galactolipids is a precursor of the phytohormone jasmonic acid (JA). The involvement of this hormone in different plant biological processes, such as responses to biotic stress conditions, has been extensively studied. However, the role of Ln in the regulation of gene expression during abiotic stress situations mediated by cellular redox changes and/or by oxidative stress processes remains poorly understood. An RNA-seq approach has increased our knowledge of the interplay among Ln, oxidative stress and ROS signaling that mediates abiotic stress conditions. Transcriptome analysis with the aid of RNA-seq in the absence of oxidative stress revealed that the incubation of Arabidopsis thaliana cell suspension cultures (ACSC) with Ln resulted in the modulation of 7525 genes, of which 3034 genes had a 2-fold-change, being 533 up- and 2501 down-regulated genes, respectively. Thus, RNA-seq data analysis showed that an important set of these genes were associated with the jasmonic acid biosynthetic pathway including lypoxygenases (LOXs) and Allene oxide cyclases (AOCs). In addition, several transcription factor families involved in the response to biotic stress conditions (pathogen attacks or herbivore feeding), such as WRKY, JAZ, MYC, and LRR were also modified in response to Ln. However, this study also shows that Ln has the capacity to modulate the expression of genes involved in the response to abiotic stress conditions, particularly those mediated by ROS signaling. In this regard, we were able to identify new targets such as galactinol synthase 1 (GOLS1), methionine sulfoxide reductase (MSR) and alkenal reductase in ACSC. It is therefore possible to suggest that, in the absence of any oxidative stress, Ln is capable of modulating new sets of genes involved in the signaling mechanism mediated by additional abiotic stresses (salinity, UV and high light intensity) and especially in stresses mediated by ROS.
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Affiliation(s)
- Capilla Mata-Pérez
- Group of Biochemistry and Cell Signaling in Nitric Oxide, Department of Experimental Biology, Area of Biochemistry and Molecular Biology, University of JaénJaén, Spain
| | - Beatriz Sánchez-Calvo
- Group of Biochemistry and Cell Signaling in Nitric Oxide, Department of Experimental Biology, Area of Biochemistry and Molecular Biology, University of JaénJaén, Spain
| | - Juan C. Begara-Morales
- Group of Biochemistry and Cell Signaling in Nitric Oxide, Department of Experimental Biology, Area of Biochemistry and Molecular Biology, University of JaénJaén, Spain
| | - Francisco Luque
- Department of Experimental Biology, Center for Advanced Studies in Olive Grove and Olive Oils, University of JaénJaén, Spain
| | - Jaime Jiménez-Ruiz
- Group of Biochemistry and Cell Signaling in Nitric Oxide, Department of Experimental Biology, Area of Biochemistry and Molecular Biology, University of JaénJaén, Spain
| | - María N. Padilla
- Group of Biochemistry and Cell Signaling in Nitric Oxide, Department of Experimental Biology, Area of Biochemistry and Molecular Biology, University of JaénJaén, Spain
| | - Jesús Fierro-Risco
- Group of Biochemistry and Cell Signaling in Nitric Oxide, Department of Experimental Biology, Area of Biochemistry and Molecular Biology, University of JaénJaén, Spain
| | - Raquel Valderrama
- Group of Biochemistry and Cell Signaling in Nitric Oxide, Department of Experimental Biology, Area of Biochemistry and Molecular Biology, University of JaénJaén, Spain
| | - Ana Fernández-Ocaña
- Group of Biochemistry and Cell Signaling in Nitric Oxide, Department of Experimental Biology, Area of Biochemistry and Molecular Biology, University of JaénJaén, Spain
| | - Francisco J. Corpas
- Group of Antioxidants, Free Radicals and Nitric Oxide in Biotechnology, Food and Agriculture, Department of Biochemistry, Cellular and Molecular Biology of Plants, Estación Experimental del Zaidín, Consejo Superior de Investigaciones CientíficasGranada, Spain
| | - Juan B. Barroso
- Group of Biochemistry and Cell Signaling in Nitric Oxide, Department of Experimental Biology, Area of Biochemistry and Molecular Biology, University of JaénJaén, Spain
- Department of Experimental Biology, Center for Advanced Studies in Olive Grove and Olive Oils, University of JaénJaén, Spain
- *Correspondence: Juan B. Barroso, Department of Experimental Biology, Area of Biochemistry and Molecular Biology, University of Jaén, Campus Las Lagunillas s/n, Jaén 23071, Spain e-mail:
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Fernández-Ocaña A, Chaki M, Luque F, Gómez-Rodríguez MV, Carreras A, Valderrama R, Begara-Morales JC, Hernández LE, Corpas FJ, Barroso JB. Functional analysis of superoxide dismutases (SODs) in sunflower under biotic and abiotic stress conditions. Identification of two new genes of mitochondrial Mn-SOD. J Plant Physiol 2011; 168:1303-8. [PMID: 21388704 DOI: 10.1016/j.jplph.2011.01.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 01/11/2011] [Accepted: 01/11/2011] [Indexed: 05/07/2023]
Abstract
Superoxide dismutases (SODs) are a family of metalloenzymes that catalyse the disproportionation of superoxide radicals into hydrogen peroxide and oxygen. In sunflower (Helianthus annuus L.) seedlings, two new Mn-SOD isozymes, designated as I and II, were identified. However, no evidence for a Fe-SOD was found. Both Mn-SOD I and Mn-SOD II have a cleaved sequence of 14 residues that target the mitochondrion with a probability of 81% and 95%, respectively. The gene expression of these new mitochondrial Mn-SODs as well as the previously reported cytosolic and chloroplastic CuZnSODs was analyzed by real-time quantitative reverse transcription-PCR. This was done in the main organs (roots, hypocotyls, and cotyledons) of sunflower seedlings and also under biotic (infection by the pathogen Plasmopara halstedii) and abiotic stress conditions, including high and low temperature and mechanical wounding. Both CuZn-SODs had a gene expression of 1000-fold higher than that of mitochondrial Mn-SODs. And the expression of the Mn-SOD I was approximately 12-fold higher than that of Mn-SOD II. The Mn-SOD I showed a significant modulation in response to the assayed biotic and abiotic stresses even when it had no apparent oxidative stress, such as low temperature. Thus, it is proposed that the mitochondrial Mn-SOD I gene could act as an early sensor of adverse conditions to prevent potential oxidative damage.
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Affiliation(s)
- Ana Fernández-Ocaña
- Grupo de Señalización Molecular y Sistemas Antioxidantes en Plantas, Unidad Asociada al CSIC (EEZ), Departamento de Bioquímica y Biología Molecular, Universidad de Jaén, Jaén, Spain
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Corpas FJ, Chaki M, Fernández-Ocaña A, Valderrama R, Palma JM, Carreras A, Begara-Morales JC, Airaki M, del Río LA, Barroso JB. Metabolism of reactive nitrogen species in pea plants under abiotic stress conditions. Plant Cell Physiol 2008; 49:1711-22. [PMID: 18801763 DOI: 10.1093/pcp/pcn144] [Citation(s) in RCA: 169] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Nitric oxide (*NO) is a key signaling molecule in different physiological processes of animals and plants. However, little is known about the metabolism of endogenous *NO and other reactive nitrogen species (RNS) in plants under abiotic stress conditions. Using pea plants exposed to six different abiotic stress conditions (high light intensity, low and high temperature, continuous light, continuous dark and mechanical wounding), several key components of the metabolism of RNS including the content of *NO, S-nitrosothiols (RSNOs) and nitrite plus nitrate, the enzyme activities of l-arginine-dependent nitric oxide synthase (NOS) and S-nitrosogluthathione reductase (GSNOR), and the profile of protein tyrosine nitration (NO(2)-Tyr) were analyzed in leaves. Low temperature was the stress that produced the highest increase of NOS and GSNOR activities, and this was accompanied by an increase in the content of total *NO and S-nitrosothiols, and an intensification of the immunoreactivity with an antibody against NO(2)-Tyr. Mechanical wounding, high temperature and light also had a clear activating effect on the different indicators of RNS metabolism in pea plants. However, the total content of nitrite and nitrate in leaves was not affected by any of these stresses. Considering that protein tyrosine nitration is a potential marker of nitrosative stress, the results obtained suggest that low and high temperature, continuous light and high light intensity are abiotic stress conditions that can induce nitrosative stress in pea plants.
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Affiliation(s)
- Francisco J Corpas
- Departamento de Bioquímica, Biología Celular y Molecular de Plantas, Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, E-18080 Granada, Spain.
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Valderrama R, Corpas FJ, Carreras A, Fernández-Ocaña A, Chaki M, Luque F, Gómez-Rodríguez MV, Colmenero-Varea P, Del Río LA, Barroso JB. Nitrosative stress in plants. FEBS Lett 2007; 581:453-61. [PMID: 17240373 DOI: 10.1016/j.febslet.2007.01.006] [Citation(s) in RCA: 200] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2006] [Revised: 12/24/2006] [Accepted: 01/05/2007] [Indexed: 01/05/2023]
Abstract
Nitrosative stress has become a usual term in the physiology of nitric oxide in mammalian systems. However, in plants there is much less information on this type of stress. Using olive leaves as experimental model, the effect of salinity on the potential induction of nitrosative stress was studied. The enzymatic l-arginine-dependent production of nitric oxide (NOS activity) was measured by ozone chemiluminiscence. The specific activity of NOS in olive leaves was 0.280nmol NOmg(-1) proteinmin(-1), and was dependent on l-arginine, NADPH and calcium. Salt stress (200mM NaCl) caused an increase of the l-arginine-dependent production of nitric oxide (NO), total S-nitrosothiols (RSNO) and number of proteins that underwent tyrosine nitration. Confocal laser scanning microscopy analysis using either specific fluorescent probes for NO and RSNO or antibodies to S-nitrosoglutathione and 3-nitrotyrosine, showed also a general increase of these reactive nitrogen species (RNS) mainly in the vascular tissue. Taken together, these findings show that in olive leaves salinity induces nitrosative stress, and vascular tissues could play an important role in the redistribution of NO-derived molecules during nitrosative stress.
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Affiliation(s)
- Raquel Valderrama
- Grupo de Señalización Molecular y Sistemas Antioxidantes en Plantas, Unidad Asociada al CSIC (EEZ), Area de Bioquímica y Biología Molecular, Universidad de Jaén, E-23071 Jaén, Spain
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Corpas FJ, Fernández-Ocaña A, Carreras A, Valderrama R, Luque F, Esteban FJ, Rodríguez-Serrano M, Chaki M, Pedrajas JR, Sandalio LM, del Río LA, Barroso JB. The expression of different superoxide dismutase forms is cell-type dependent in olive (Olea europaea L.) leaves. Plant Cell Physiol 2006; 47:984-94. [PMID: 16766574 DOI: 10.1093/pcp/pcj071] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Superoxide dismutase (SOD) is a key antioxidant enzyme present in prokaryotic and eukaryotic cells as a first line of defense against the accumulation of superoxide radicals. In olive leaves, the SOD enzymatic system was characterized and was found to be comprised of three isozymes, an Mn-SOD, an Fe-SOD and a CuZn-SOD. Transcript expression analysis of whole leaves showed that the three isozymes represented 82, 17 and 0.8% of the total SOD expressed, respectively. Using the combination of laser capture microdissection (LCM) and real-time quantitative reverse transcription-PCR (RT-PCR), the expression of these SOD isozymes was studied in different cell types of olive leaves, including spongy mesophyll, palisade mesophyll, xylem and phloem. In spongy mesophyll cells, the isozyme proportion was similar to that in whole leaves, but in the other cells the proportion of expressed SOD isozymes was different. In palisade mesophyll cells, Fe-SOD was the most abundant, followed by Mn-SOD and CuZn-SOD, but in phloem cells Mn-SOD was the most prominent isozyme, and Fe-SOD was present in trace amounts. In xylem cells, only the Mn-SOD was detected. On the other hand, the highest accumulation of superoxide radicals was localized in vascular tissue which was the tissue with the lowest level of SOD transcripts. These data show that in olive leaves, each SOD isozyme has a different gene expression depending on the cell type of the leaf.
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Affiliation(s)
- Francisco J Corpas
- Departamento de Bioquímica, Biología Celular y Molecular de Plantas, Estación Experimental del Zaidín, CSIC, Granada, Spain.
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Valderrama R, Corpas FJ, Carreras A, Gómez-Rodríguez MV, Chaki M, Pedrajas JR, Fernández-Ocaña A, Del Río LA, Barroso JB. The dehydrogenase-mediated recycling of NADPH is a key antioxidant system against salt-induced oxidative stress in olive plants. Plant Cell Environ 2006; 29:1449-59. [PMID: 17080966 DOI: 10.1111/j.1365-3040.2006.01530.x] [Citation(s) in RCA: 134] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
NADPH is an important molecule in the redox balance of the cell. In this paper, using olive tissue cultures as a model of the function of the NADPH-generating dehydrogenases in the mechanism of oxidative stress induced by severe salinity conditions was studied. When olive (Olea europaea) plants were grown with 200 mM NaCl, a 40% reduction in leaf fresh weight was produced. The content of non-enzymatic antioxidants such as ascorbate and glutathione was diminished between 20% to 39%, whereas the H2O2 content was increased threefold. In contrast, the analysis of the activity and protein contents of the main antioxidative enzymes showed a significant increase of catalase, superoxide dismutase and glutathione reductase. Overall, these changes strongly suggests that NaCl induces oxidative stress in olive plants. On the other hand, while the content of glucose-6-phosphate was increased almost eightfold in leaves of plants grown under salt stress, the content of NAD(P)H (reduced and oxided forms) did not show significant variations. Under salt stress conditions, the activity and protein contents of the main NADPH-recycling enzymes, glucose-6-phosphate dehydrogenase (G6PDH), isocitrate dehydrogenase (ICDH), malic enzyme (ME) and ferrodoxin-NADP reductase (FNR) showed an enhancement of 30-50%. In leaves of olive plants grown with 200 mM NaCl, analysis of G6PDH by immunocytochemistry and confocal laser scanning microscopy showed a general increase of this protein in epidermis, palisade and spongy mesophyll cells. These results indicate that in olive plants, salinity causes reactive oxygen species (ROS)-mediated oxidative stress, and plants respond to this situation by inducing different antioxidative enzymes, especially the NADPH-producing dehydrogenases in order to recycle NADPH necessary for the protection against oxidative damages. These NADP-dehydrogenases appear to be key antioxidative enzymes in olive plants under salt stress conditions.
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Affiliation(s)
- Raquel Valderrama
- Grupo de Señalización Molecular y Sistemas Antioxidants en Plantas, Unidad Asociada al CSIC (EEZ), Departamento de Bioquímica y Biología Molecular, Universidad de Jaén, Spain
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Barroso JB, Corpas FJ, Carreras A, Rodríguez-Serrano M, Esteban FJ, Fernández-Ocaña A, Chaki M, Romero-Puertas MC, Valderrama R, Sandalio LM, del Río LA. Localization of S-nitrosoglutathione and expression of S-nitrosoglutathione reductase in pea plants under cadmium stress. J Exp Bot 2006; 57:1785-93. [PMID: 16595575 DOI: 10.1093/jxb/erj175] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
S-nitrosoglutathione (GSNO) is considered a natural nitric oxide (NO.) reservoir and a reactive nitrogen intermediate in animal cells, but little is known about this molecule and its metabolism in plant systems. In this work, using pea plants as a model system, the presence of GSNO in collenchyma cells was demonstrated by an immunohistochemical method. When pea plants were grown with a toxic Cd concentration (50 microM) the content of GSNO in collenchyma cells was drastically reduced. Determination of the nitric oxide (NO.) and gluthathione contents in leaves by confocal laser scanning microscopy and HPLC, respectively, showed a marked decrease of both compounds in plants treated with cadmium. The analysis of the S-nitrosoglutathione reductase (GSNOR) activity and its transcript expression in leaves showed a reduction of 31% by cadmium. These results indicate that GSNO is associated with a specific plant cell type, and this metabolite and its related catabolic activity, GSNOR, are both down-regulated under Cd stress.
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Affiliation(s)
- Juan B Barroso
- Grupo de Señalización Molecular y Sistemas Antioxidantes en Plantas, Unidad Asociada al CSIC (Estación Experimental del Zaidín), Area de Bioquímica y Biología Molecular, Universidad de Jaén, E- 23071 Jaén, Spain.
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