13: 377–384. The role of peroxidases in the development of plants and their responses to abiotic stresses. Hydrogen peroxide induces a rapid production of nitric oxide in mung bean (, Ethylene regulates the susceptible response to pathogen infection in tomato, Salicylic acid mediated by the oxidative burst is a key molecule in local and systemic responses of cotton challenged by an avirulent race of, Horseradish peroxidase oxidation of tyrosine-containing peptides and their subsequent polymerization: a kinetic study, Methyl jasmonate induced production of taxol in suspension cultures of, Transgenic tobacco plants with reduced capability to detoxify reactive oxygen intermediates are hyperresponsive to pathogen infection, A basic peroxidase isoenzyme from vacuoles and cell walls of, Isolation and sequencing of cDNA clones encoding ethylene-induced putative peroxidases from cucumber cotyledons, The effects of nitric oxide on the oxidations of, Hydrogen peroxide and nitric oxide as signalling molecules in plants, Interacting signal pathways control defence gene expression in, Innate immunity in plants and animals: striking similarities and obvious differences, Generation of superoxide anion and localization of CuZn-superoxide dismutase in the vascular tissue of spinach hypocotyls: their association with lignification, Identification of a dehydrodimer of avenanthramide phytoalexin in oats, New dimeric compounds of avenanthramide phytoalexin in oats, Reactive oxygen species and hormonal control of cell death, Microarray analysis of nitric oxide responsive transcripts in, Peroxidases have more functions than a Swiss army knife, The class III peroxidase multigenic family in rice and its evolution in land plants, Performing the paradoxical: how plant peroxidasas modify the cell wall. The first mechanism is restricted to the O2•_/H2O2 generating step of plant Prxs during their catalytic cycle, which is represented by the decay of Compound III (CIII) into FeIII (Fig.

Welinder KG (1992a) Superfamily of plant, fungal and bacterial peroxidases. Cleveland: CRC Press, Fujiyama K, Takemura H, Shibayama S, Kobayashi K, Choi J-K, Shinmyo A, Takano M, Yamada Y and Okada H (1988) Structure of the horseradish peroxidase isozyme C genes. Doctoral Physiol Plant 27: 218–224, Wang TT and Yang SF (1987) Physiological role of lipoxygenase in ethylene formation from 1-aminocyclopropane-1 carboxylic acid in oat leaves. Indian J Exp Biol 18: 500–503, Ockerse R, Siegel BZ and Galston AW (1966) Hormone induced represssion of a peroxidase isozyme in plant tissue.

Evidence supporting the production of SA• by Prxs has been obtained by electron spin resonance (ESR) studies (Kawano and Muto, 2000). Basic peroxidases: the gateway for lignin evolution? It is then possible that NO•, a free radical itself, may react with O2•_ to form the highly reactive peroxynitrite anion, ONOO–, and subsequent cellular effects may then be induced by ONOO–.

Transgenic plants overexpressing the prx8 gene showed an increased tolerance to these abiotic stresses. Doyle WA, Blodig W, Veitch NC, Piontek K & Smith AT (1998) Two substrate interaction sites in lignin peroxidase revealed by site-directed mutagenesis. PCD induced by H2O2 during the HR in Arabidopsis (Desikan et al., 1998) and soybean (Solomon et al., 1999) requires transcription and translation, and several studies have demonstrated that H2O2 modulates gene expression during defence responses (Levine et al., 1994; Desikan et al., 1998). A fraction of s-RNA from grain embryos linked to a peroxidase activity. 273: 2241–2248. The interaction of Prxs with extensins also has a defence function since it makes the cell wall harder to penetrate. Green MT (2000) Imidazole-ligated compound I intermediates: The effect of hydrogen bonding.

Acta Cryst. Protoplasma 19: 78–96, Hillman WS and Galston AW (1957) Inductive control of IAA oxidase activity by red and near-far red light. Liglin is a polymer responsible for rendering the plant stronger and more rigid and also making the cell walls hydrophobic.

coniferyl alcohol) (Ferrer et al., 1990), or soluble cell wall proteins (Wojtaszek et al., 1997), are introduced in the bulk of the oxidase/Prx reaction. Phytochemistry 65: 259–269. Search for other works by this author on: Plant Prxs are haem-containing enzymes which catalyse the single one-electron oxidation of several substrates at the expense of H, However, not all Prx-mediated ROS-production reactions deliver, As discussed above, during pathogen attack, host plant tissues are capable of sustaining both NO, Hormonal regulation, and intracellular localization of a 33-kD cationic peroxidase in excised cucumber cotyledons, Methyl jasmonate and salicylic acid elicitation induces ginsenosides accumulation, enzymatic and non-enzymatic antioxidant in suspension culture, Generation of nitric oxide by enzymatic oxidation of, Reactive oxygen intermediates mediate a systemic signal network in the establishment of plant immunity, Histochemical evidence of polyamine oxidation and hydrogen peroxide generation in the cell wall, pH effects on the haem iron co-ordination state in the nitric oxide and deoxy derivatives of ferrrous horseradish peroxidase and cytochrome, Disease development in ethylene-insensitive, Biochemical characterization of the suberization-associated anionic peroxidase of potato, Oxidases, peroxidases and hydrogen peroxide: the suberin connection, The apoplastic oxidative burst in response to biotic stress in plants: a three-component system, Comparative biochemistry of the oxidative burst produced by rose and French bean cells reveals two distinct mechanisms, The role of calcium and activated oxygen as signals for controlling cross-tolerance, Transient state and steady-state kinetics of the oxidation of aliphatic and aromatic thiols by horseradish peroxidase, Induction of resistance in melon seedlings against soil-borne fungal pathogens by gaseous treatments with methyl jasmonate and ethylene, Electrochemical and peroxidase oxidation study of, Bioorganic and Medicinal Chemistry Letters, Active oxygen species in the induction of plant systemic acquired resistance induced by salicylic acid, Hydrogen peroxide generation by the pepper extracellular peroxidase CaPO, Purification and characterization of peroxidases correlated with lignification in poplar xylem, NO way back: nitric oxide and programmed cell death in, The expression of different superoxide dismutase forms is cell-type dependent in olive (, Molecular cloning and characterization of a vacuolar class III peroxidase involved in the metabolism of anticancer alkaloids in, Cytochemical localization of hydrogen peroxide in lignifying cell walls, Nitric oxide functions as a signal in plant disease resistance, Signal interactions between nitric oxide and reactive oxygen intermediates in the plant hypersensitive disease resistance response, Proceedings of the National Academy of Sciences, USA, Generation of active oxygen in elicited cells of, Hydrogen peroxide induced gene expression in, Harpin and hydrogen peroxide both initiate programmed cell death but have differential effects on gene expression in, Defence gene induction in tobacco by nitric oxide, cyclic GMP, and cyclic ADP ribose, Growth, metabolic profiling and enzymes activities of, Metabolomics reveals novel pathways and differential mechanistic and elicitor-specific responses in phenylpropanoid and isoflavonoid biosynthesis in, Jasmonates and related oxylipins in plant responses to pathogenesis and herbivory, Induction of an anionic peroxidase in cowpea leaves by exogenous salicylic acid, Oxidation of coniferyl alcohol by cell wall peroxidases at the expense of indole-3-acetic acid and O, Differential effects of nitric oxide on peroxidase and H, Interaction of myeloperoxidase with peroxynitrite.

Peroxides are created as byproducts of various biochemical reactions within organisms, but can cause damage as they are oxidizing agents. Soc. J. Biol. Expression and high-resolution structure of a plant peroxidase with implications for lignification. https://doi.org/10.1007/BF00027212, Over 10 million scientific documents at your fingertips, Not logged in

), and certain lignans/neo-lignans (dimers and oligomers of monolignols and p-hydroxy-cinnamic acids) are well known bioactive (anti-fungal) products resulting from Prx-mediated reactions, and their significance in vivo has been addressed several times (Langcake and Pryce, 1977a, b;Langcake, 1981; Waffo-Teguo et al., 2001; Ros Barceló and Pomar, 2002).

The ability of plant Prxs to synthesize NO• is not restricted to the course of the oxidation of N-hydroxyguanidines, since the oxidation of N-hydroxy-N-nitrosamines (Alston et al., 1985), such as cupferron, a xenobiotic, or alanosine (a natural antineoplastic drug closely related to aspartic acid), also yields NO• as a collateral product of the reaction.