The impact of short‐term UV irradiation on grains of sensitive and tolerant cereal genotypes studied by EPR

Kurdziel, Magdalena; Filek, Maria; Łabanowska, Maria

doi:10.1002/jsfa.8753

Cited by 12 publications

(13 citation statements)

References 33 publications

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“…The values of MDA are the indicator of lipid peroxidation – an increase of MDA content is associated with formation of reactive oxygen species (ROS) and is often used as an indicator of plant stress . In our study, significant changes in the concentrations of MDA were observed only after direct ACP treatments combined with 24 h retention time – an increase of MDA levels by 27.8 and 33.8% was recorded for 30 and 180 s, respectively (Figure c).…”

Section: Resultssupporting

confidence: 49%

Investigation of mechanisms involved in germination enhancement of wheat (Triticum aestivum) by cold plasma: Effects on seed surface chemistry and characteristics

Los

Ziuzina

Boehm

et al. 2019

Plasma Processes & Polymers

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Recent reports indicate that atmospheric cold plasma (ACP) treatment of seeds can enhance their germination, however, the mechanisms of action are not yet entirely clear. In the present work, we report on the effects of plasma treatment on wheat seed germination and seedling growth. Additionally, changes in the surface chemistry and characteristics of the wheat seeds exposed to plasma were investigated. Treatments of 30–60 s significantly enhanced the germination rate and showed positive effects on seedling growth. ACP resulted in changes of seed surface and chemical characteristics including water uptake and contact angle values. Changes in seed pH and total titratable acidity, as well as nitrites, nitrates, and malondialdehyde concentrations were also recorded.

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Section: Resultssupporting

confidence: 49%

Investigation of mechanisms involved in germination enhancement of wheat (Triticum aestivum) by cold plasma: Effects on seed surface chemistry and characteristics

Los

Ziuzina

Boehm

et al. 2019

Plasma Processes & Polymers

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“…UV-irradiation is a very popular technique for the generation of radicals measured by EPR [44][45][46]. Foods are directly irradiated with UV-light [47][48][49] or after the addition of a photosensitive radical initiator in foods [50,51]. The radicals, produced from UV-irradiation, usually are trapped by spin traps before being measured by EPR.…”

Section: Methods For Induction Of Radicalsmentioning

confidence: 99%

“…However, there are examples of direct measurement of stable radicals formed in food. For example, UV-irradiation of grains resulted in the formation of reactive oxygen species and stable semiquinone and phenoxyl radicals [49]. In addition to the formation of organic radicals, the Mn II and the Fe III EPR signals alternate, pointing to a disturbance of the biomolecules' structures.…”

Section: Methods For Induction Of Radicalsmentioning

confidence: 99%

EPR Methods Applied on Food Analysis

Drouza¹,

Spanou²,

Keramidas³

2019

Topics From EPR Research

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An overview of the different methodologies developed so far for the investigation of paramagnetic species in foods is presented. Electron paramagnetic resonance spectroscopy (EPR), also known as electron spin resonance spectroscopy (ESR), is the primary technique toward the development of methods for the exploration of EPR-sensitive species, such as free radicals, reactive oxygen species (ROS), nitrogen reactive species (NRS), and C-centered radicals and metal ions. These methods aim for: (a) quantification of radical species, (b) exploration of redox chemical reaction mechanisms in foods, (c) assessment of the antioxidant capacity of food, and (d) food quality, stability, and food shelf life. For these purposes, different radical initiations and detections have been used in foods depending on both the chemistry of the target system and the kind of information required, listed in: the induction of radicals by (a) microwave, UV, or γ-radiation; (b) heating; (c) addition of metals; and (d) use of oxidants.

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“…Increase in the level of UV-B radiation can lead to excess elevation of reactive oxygen species (ROS) and oxidative stress induction in plant cells [7]. As a result, cells can suffer DNA damage, damage of their photosynthetic apparatus, alteration of membrane properties, cell cycle arrest, morphological, physiological, biochemical changes, growth inhibition, and cell death [8][9][10][11][12][13][14]. To reduce ROS and oxidative stress induced by high UV-B radiation as well as to avoid damaging effects in the main cellular structures, many plants have developed several defense responses [6,10,14], increase in the levels of UV-absorbing compounds [9,[15][16][17][18][19] and development of defensive morphological alteration [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of UV Radiation and Other Abiotic Stress Factors on DNA of Different Wild Plant Species Grown in Three Successive Seasons in Alpine and Subalpine Regions

Gateva¹,

Jovtchev²,

Angelova³

et al. 2022

Phyton

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Plants in natural ecosystems are exposed to a combination of UV radiation, ionizing radiation (IR) and other abiotic factors. These factors change with the altitude. We investigated DNA alterations of some wild plants of different plant families in natural ecosystems at three altitudes in Rila Mountain, Bulgaria (1500, 1782, and 2925 m above sea level (a.s.l.) exposed to UV radiation, IR and other abiotic stresses, to assess the tolerance of plant species to the changing environmental conditions in three successive growth seasons. For this purpose, physicochemical, cytogenetic, and molecular methods were applied. DNA damage was assessed by micronucleus test and molecular method comet assay adapted and applied by us to wild plant species from Onagraceae, Rosaceae, Boraginaceae, Saxifragaceae, Orobanchaceae, Asteraceae and Poaceae families, growing at three different altitudes. Variability in the DNA sensitivity and the level of tolerance was observed among the plant species in response to combined abiotic factors assessed by induced DNA damage and gross beta activity. The studied representatives of Poaceae were less susceptible than the other studied species at all three altitudes and showed close level of DNA injuries to that of unaffected control plant grown in laboratory conditions. The lower levels of DNA damage of these wild plant species corresponded to their lower ability to accumulate radionuclides. There was a particularly pronounced low level of DNA injuries in the plant species at the highest altitude. The level of DNA damage showed correlation with the values of some abiotic environmental factors. The results would contribute to the elucidation of the extent of adaptation of plant species to the continuously changing environment and would be useful in selecting sensitive herbaceous monitor species for environmental impact assessment at mountain and alpine sites.

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The impact of short‐term UV irradiation on grains of sensitive and tolerant cereal genotypes studied by EPR

Cited by 12 publications

References 33 publications

Investigation of mechanisms involved in germination enhancement of wheat (Triticum aestivum) by cold plasma: Effects on seed surface chemistry and characteristics

Investigation of mechanisms involved in germination enhancement of wheat (Triticum aestivum) by cold plasma: Effects on seed surface chemistry and characteristics

EPR Methods Applied on Food Analysis

Effect of UV Radiation and Other Abiotic Stress Factors on DNA of Different Wild Plant Species Grown in Three Successive Seasons in Alpine and Subalpine Regions

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