Oxidative stress in pea seedling leaves in response to Acyrthosiphon pisum infestation

Chung, Van; Bednarski, Waldemar; Borowiak-Sobkowiak, Beata; Wilkaniec, B.; Samardakiewicz, Sławomir; Morkunas, Iwona

doi:10.1016/j.phytochem.2013.02.011

Cited by 102 publications

(125 citation statements)

References 75 publications

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“…Superoxide anion radicals can also be detected using dihydroethidium (DHE), a cell-permeable blue fluorescent stain that forms red fluorescent oxyethidium upon oxidation and intercalates with nucleic acids (see recent applications in Lehotai et al, 2011;Mai et al, 2013;Pet} o et al, 2013). The hydroxyl radicals can be quantified using 2-deoxyribose (DOR), a scavenger and a probe as exemplified in the study on Botrytis cinerea-infected tomato leaves by Malolepsza and Rozalska, 2005.…”

Section: Detection Of Rosmentioning

confidence: 99%

Reactive oxygen species and plant resistance to fungal pathogens

et al. 2015

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Reactive oxygen species (ROS) have been studied for their role in plant development as well as in plant immunity. ROS were consistently observed to accumulate in the plant after the perception of pathogens and microbes and over the years, ROS were postulated to be an integral part of the defence response of the plant. In this article we will focus on recent findings about ROS involved in the interaction of plants with pathogenic fungi. We will describe the ways to detect ROS, their modes of action and their importance in relation to resistance to fungal pathogens. In addition we include some results from works focussing on the fungal interactor and from studies investigating roots during pathogen attack.

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Section: Detection Of Rosmentioning

confidence: 99%

Reactive oxygen species and plant resistance to fungal pathogens

et al. 2015

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“…Magnetic field measurements were achieved by an NMT-Teslameter ER 036TM (Bruker BioSpin GmbH, Rheinstetten, Germany). All EPR experiments were performed at 295 K. Spin concentration was calculated after double integration of EPR spectra according to the procedure described elsewhere (Mai et al 2013). …”

Section: Epr Spectroscopymentioning

confidence: 99%

Radiodegradation of nadolol in the solid state and identification of its radiolysis products by UHPLC–MS method

et al. 2017

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Nadolol ((2R*,3S*)-5-{[(2R*)-3-(tert-butylamino)-2-hydroxypropyl]oxy}-1,2,3,4 tetrahydronaphthalene-2,3-diol) in substantia was exposed to ionizing radiation generated by a beam of high-energy electrons in an accelerator, in the standard sterilisation dose of 25 kGy and in higher doses of 50 -400 kGy. The irradiated and non-irradiated (control) samples were analysed by the infrared spectrophotometry, electron paramagnetic resonance, differential scanning calorimetry (DSC) and ultrahigh performance liquid chromatography coupled with mass spectrometry (UHPLC-MS). The irradiated samples were found to contain free radicals in concentrations much higher than that observed for the other irradiated b-blockers. On the basis of UHPLC-MS results, it was possible to establish structures of 11 compounds of the impurities and/ or products of nadolol decomposition. The main product of radiodegradation was concluded to be formed as a result of abstraction of the hydroxyl group and aromatization of the tetrahydronaphthalene ring. The results of DSC measurements confirmed the presence of radiolysis products in the irradiated samples of nadolol. A shift of the endothermic peak corresponding to melting towards lower temperatures (by 4.4°C at the dose of 400 kGy) was directly proportional to the doses of radiation used, which permits concluding that this method is sensitive and suitable for evaluation of radiodegradation of nadolol in solid phase.

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“…This process generally involves the reduction of oxygen molecules to generate reactive oxygen species, such as the superoxide anion and hydrogen peroxide, which not only act as defensive molecules but also behave as signaling molecules to trigger other defense mechanisms. 1 However, the oxidation products of polyphenols have not been thoroughly characterized to date. Black tea is produced by the mechanical crushing of the fresh leaves of Camellia sinensis.…”

Section: Introductionmentioning

confidence: 99%

Selective oxidation of pyrogallol-type catechins with unripe fruit homogenate of Citrus unshiu and structural revision of oolongtheanins

et al. 2015

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unshiu homogenate gave two new compounds, including an ethanol adduct of an oolongtheanin precursor and epigallocatechin 4′-O-rutinoside, together with theasinensin C, dehydrotheasinensin E, and desgalloyl oolongtheanin. The structure of desgalloyl oolongtheanin should be revised based on the spectroscopic and computational data collected in the current study, and a mechanism responsible for the production of oolongtheanins is also proposed.

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Oxidative stress in pea seedling leaves in response to Acyrthosiphon pisum infestation

Cited by 102 publications

References 75 publications

Reactive oxygen species and plant resistance to fungal pathogens

Reactive oxygen species and plant resistance to fungal pathogens

Radiodegradation of nadolol in the solid state and identification of its radiolysis products by UHPLC–MS method

Selective oxidation of pyrogallol-type catechins with unripe fruit homogenate of Citrus unshiu and structural revision of oolongtheanins

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