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Cytosolic NADP-isocitrate dehydrogenase of pea plants: genomic clone characterization and functional analysis under abiotic stress conditions.
Free Radic Res. 2007 Feb; 41(2):191-9.FR

Abstract

NADPH is an essential electron donor in numerous biosynthetic and detoxification reactions. In animal, yeast and bacteria, the NADP-dependent isocitrate dehydrogenase (NADP-ICDH), which catalyzes the production of NADPH, is being recognized as an essential component of the antioxidative defence mechanisms. In plant cells, there is little information on the antioxidant properties of NADP-ICDH. Using a pea cDNA lambdagt11 library, the full-length cDNA of a NADP-ICDH was obtained. In pea leaves, the analyses of activity, protein and transcript expression of NADP-ICDH under six different abiotic stress conditions (CL, continuous light, HLI, high light intensity, D, continuous dark, LT, low-temperature HT, high-temperature and W, mechanical wounding) revealed a differential regulation at transcriptional and post-translational level depending on the abiotic stress. The activity and protein expression of NADP-ICDH and catalase increased only under HLI but the NADP-ICDH transcripts were up-regulated by cold stress (70%) and W (40%). Under the same conditions, the transcript analysis of glutathione reductase (GR), monodehydroascorbate reductase (MDAR) and ascorbate peroxidase (APX), key components of the antioxidative ascorbate-glutathione cycle, showed similar inductions. These data indicate that in pea plants the cytosolic NADP-ICDH shows a differential response, at mRNA and activity level, depending on the type of abiotic stress and suggests that this dehydrogenase could have a protective antioxidant role against certain environmental stresses in plants.

Authors+Show Affiliations

Departamento de Bioquímica, Biología Celular y Molecular de Plantas, Instituto de Biología Vegetal y Medio Ambiente, Estación Experimental del Zaidín, CSIC, Apartado 419, Granada, E-18080, Spain.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

17364945

Citation

Leterrier, Marina, et al. "Cytosolic NADP-isocitrate Dehydrogenase of Pea Plants: Genomic Clone Characterization and Functional Analysis Under Abiotic Stress Conditions." Free Radical Research, vol. 41, no. 2, 2007, pp. 191-9.
Leterrier M, Del Río LA, Corpas FJ. Cytosolic NADP-isocitrate dehydrogenase of pea plants: genomic clone characterization and functional analysis under abiotic stress conditions. Free Radic Res. 2007;41(2):191-9.
Leterrier, M., Del Río, L. A., & Corpas, F. J. (2007). Cytosolic NADP-isocitrate dehydrogenase of pea plants: genomic clone characterization and functional analysis under abiotic stress conditions. Free Radical Research, 41(2), 191-9.
Leterrier M, Del Río LA, Corpas FJ. Cytosolic NADP-isocitrate Dehydrogenase of Pea Plants: Genomic Clone Characterization and Functional Analysis Under Abiotic Stress Conditions. Free Radic Res. 2007;41(2):191-9. PubMed PMID: 17364945.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cytosolic NADP-isocitrate dehydrogenase of pea plants: genomic clone characterization and functional analysis under abiotic stress conditions. AU - Leterrier,Marina, AU - Del Río,Luis A, AU - Corpas,Francisco J, PY - 2007/3/17/pubmed PY - 2007/6/28/medline PY - 2007/3/17/entrez SP - 191 EP - 9 JF - Free radical research JO - Free Radic Res VL - 41 IS - 2 N2 - NADPH is an essential electron donor in numerous biosynthetic and detoxification reactions. In animal, yeast and bacteria, the NADP-dependent isocitrate dehydrogenase (NADP-ICDH), which catalyzes the production of NADPH, is being recognized as an essential component of the antioxidative defence mechanisms. In plant cells, there is little information on the antioxidant properties of NADP-ICDH. Using a pea cDNA lambdagt11 library, the full-length cDNA of a NADP-ICDH was obtained. In pea leaves, the analyses of activity, protein and transcript expression of NADP-ICDH under six different abiotic stress conditions (CL, continuous light, HLI, high light intensity, D, continuous dark, LT, low-temperature HT, high-temperature and W, mechanical wounding) revealed a differential regulation at transcriptional and post-translational level depending on the abiotic stress. The activity and protein expression of NADP-ICDH and catalase increased only under HLI but the NADP-ICDH transcripts were up-regulated by cold stress (70%) and W (40%). Under the same conditions, the transcript analysis of glutathione reductase (GR), monodehydroascorbate reductase (MDAR) and ascorbate peroxidase (APX), key components of the antioxidative ascorbate-glutathione cycle, showed similar inductions. These data indicate that in pea plants the cytosolic NADP-ICDH shows a differential response, at mRNA and activity level, depending on the type of abiotic stress and suggests that this dehydrogenase could have a protective antioxidant role against certain environmental stresses in plants. SN - 1071-5762 UR - https://www.unboundmedicine.com/medline/citation/17364945/Cytosolic_NADP_isocitrate_dehydrogenase_of_pea_plants:_genomic_clone_characterization_and_functional_analysis_under_abiotic_stress_conditions_ L2 - https://www.tandfonline.com/doi/full/10.1080/10715760601034055 DB - PRIME DP - Unbound Medicine ER -