A Large Family of Class III Plant Peroxidases

Hiraga, Susumu; Sasaki, Keiko; Ito, Hiroyuki; Ohashi, Yuko; Matsui, Hirokazu

doi:10.1093/pcp/pce061

Cited by 788 publications

(597 citation statements)

References 85 publications

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“…6). POX catalyse oxidoreduction reactions of various substrates via H 2 O 2 ; however, they are also known to be involved in ROS production under specific conditions (Hiraga et al 2001). POX can contribute to resistance against pathogens in various pathosystems (Baysal et al 2005), whereas localized production of H 2 O 2 and superoxide radical belong among the first cytologically and histochemicaly detected responses of plant tissue on penetration of pathogen.…”

Section: Involvement and Activity Of Antioxidant Enzymes In Plant Sysmentioning

confidence: 99%

Resistance mechanisms of wild tomato germplasm to infection of Oidium neolycopersici

et al. 2013

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Tomato powdery mildew (Oidium neolycopersici) is one of the most devastating diseases of cultivated tomatoes worldwide. Although the first epidemics were recorded more than 25 years ago many aspects of this host-pathogen interaction are still not well understood. Detailed morphological and molecular studies of the anamorphs confirmed that O. neolycopersici is phylogeneticaly close to Erysiphe aquilegiae var. ranunculi. Host range is rather broad, apart from Solanaceae hosts were found in the families Apocynaceae, Campanulaceae, Crassulaceae, Cistaceae, Cucurbitaceae, Linaceae, Malvaceae, Papaveraceae, Pedialiaceae, Scrophulariaceae, Valerianaceae a Violaceae. Non-host resistance within these families is not based on inhibition of formation of primary haustorium, however, on post-haustorial hypersensitive reponse and another type of non-hypersensitive resistance. Screening of wild Solanum species (previous Lycopersicon spp.) germplasm revealed valuable sources of resistance (S. habrochaites, S. pennellii, S. cheesmaniae, S. chilense, S. peruvianum). The main resistance mechanism was found to be a hypersensitive response (HR), in some cases followed by limited development of the pathogen. However, there is a broad variation in resistance response on the histological and cytological level. Interaction between many wild Solanum spp. and O. neolycopersici is race-specific, at least three races were differentiated. In some interspecific crosses (S. lycopersicum × S. habrochaites) adult plant resistance was observed. Biochemical studies focusing on production of reactive oxygen species (ROS) and peroxidase activity during infection of O. neolycopersici showed that production of ROS and activity of corresponding enzymes is related to activation of defence responses in genotypes of wild Solanum sect. Lycopersicon. The significance of nitric oxide (NO) in O. neolycopersici pathogenesis was supported by experiments with NO donors and scavengers. In moderately resistant genotype S. chmielewskii, treatment by heat stress caused slight deceleration of pathogen development, increased production of jasmonic acid (JA) and abscisic acid (ABA) and increased peroxidase activity in infected plants. The different degree of tomato resistance/ susceptibility did not markedly change the rate and extent of photosynthetic response to O. neolycopersici; only minimal impairment of photosynthesis was found in both susceptible and moderately resistant genotypes during the Harper Adams University, Newport, Shropshire TF10 8NB, UK first 9 days after inoculation. The accumulated evidence confirm a crucial role of localised increased production of ROS and reactive nitrogen species (RNS) in response to pathogen penetration into plant tissue and its involvement in the plant resistance responses including the initiation and progression of plant cell death in host wild Solanum species. Crucial points of further research are discussed.

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Section: Involvement and Activity Of Antioxidant Enzymes In Plant Sysmentioning

confidence: 99%

Resistance mechanisms of wild tomato germplasm to infection of Oidium neolycopersici

et al. 2013

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“…6,7 In the presence of H 2 O 2 (the common e ¡ acceptor) and a variety of e ¡ -donating substrates, plant POXs may achieve a great deal of oxidation reactions essential for the functions of living cells, 5 possibly via production and localization of certain POX isoforms at specific timing, so that the living plants can respond to and combat a wide variety of stressful challenges with biotic or abiotic nature. 11,12 In the absence of H 2 O 2 -requiring reactions, plant POXs are still capable of production of ROS (O 2 ¡ and derived H 2 O 2 ) through the oxygen-requiring cycle involving specific e ¡ donors such as indole-3-acetic acid (IAA), a natural auxin. [13][14][15] The idea on the IAA-dependent reduction of native plant POX to ferrous enzyme intermediate has been proposed by Smith and his colleagues.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen peroxide-independent generation of superoxide catalyzed by soybean peroxidase in response to ferrous ion

Kimura

Kawano

2015

Plant Signaling & Behavior

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“…Another hypothesis could be the possible role of stigma-specific peroxidases in the defence of stigma against pathogen attack. In literature it is known that some peroxidases are involved in defence response by induction or up-regulation in relation to stress and hypersensitive response [1]. For instance, a peroxidase of Capsicum annum L. CaPrx02 resulted expressed during response against pathogen attack regulating H 2 O 2 levels [49], while a research in almond demonstrated the expression of peroxidases in the pistil in relation with pathogenesis response [50], enforcing the idea of a putative role of stigma-specific peroxidases in defence mechanisms, when the pistil is able to receive pollen.…”

Section: Discussionmentioning

confidence: 99%

Isolation of a gene encoding for a class III peroxidase in female flower of Corylus avellana L.

et al. 2012

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Hazelnut is a monoecius species characterized by mid-winter blooming and sporophytic incompatibility. The molecular mechanisms at the basis of the female flower development and of the pollen-stigma interaction are little known, although pollination in this species is a critical factor to ensure good yield. Differential Display technique was used to study genes expressed during the female flower development, comparing styles before emergence from the bud and styles at full bloom. The full-length cDNA clone, designated CavPrx (Corylus avellana peroxidase) and isolated in mature styles, was characterized as a sequence encoding for a 330 amino acids protein, containing all the conserved features of class III peroxidases. CavPrx resulted expressed only in styles, with a peak in mature styles pollinated with compatible pollen. Class III peroxidases are expressed in several different plant tissue types and are involved in a broad spectrum of physiological processes. Until now, four peroxidases expressed in the stigma were identified in Arabidopsis thaliana and Senecio squalidus: they were assumed to be possibly involved in pollen-pistil interaction, pollen tube penetration/growth and/or in defence against pathogens. CavPrx is the first gene for a floral peroxidase isolated in hazelnut and its expression pattern suggests a possible role in the pollination process.

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A Large Family of Class III Plant Peroxidases

Cited by 788 publications

References 85 publications

Resistance mechanisms of wild tomato germplasm to infection of Oidium neolycopersici

Resistance mechanisms of wild tomato germplasm to infection of Oidium neolycopersici

Hydrogen peroxide-independent generation of superoxide catalyzed by soybean peroxidase in response to ferrous ion

Isolation of a gene encoding for a class III peroxidase in female flower of Corylus avellana L.

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