Abstract
Aim. The aim of the investigation was to study the effect of hydrogen peroxide on the activity of antioxidant enzymes, pigments’ content and productivity of winter wheat in order to determine the biochemical mechanisms of induced winter wheat plant resistance during ontogenesis in the fi eld. Methods. The study of physiological and biochemical parameters were carried out on winter wheat varieties of the wooded steppe (Poliska 90) and steppe (Skala) ecotypes at the tillering and fl owering phases. The experimental plants were foliar treated with hydrogen peroxide (Н 2 О 2 ) in concentration of 1∙10 –1 M twice, with a 3-day-interval, while the control ones – with distilled water. Spraying of plants was performed at spring (tillering phase). Lipid peroxidation (LPO) was determined as the formation of a peroxidation end product — malondialdehyde, which content was determined as the extinction of its condensation product with thiobarbituric acid. The activity of superoxide dismutase (SOD) was determined by a method based on the ability of SOD to inhibit nitroblue tetrazolium recovery by superoxide radicals in the light in the presence of ribofl avin and methionine. The activity of catalase was calculated using the extinction coeffi cient of − 39.4 mM –1 cm –1 . Results. It was established that after 24 h of hydrogen peroxide treatment the processes of lipid peroxidation were intensifi ed and antioxidant enzymes’ activity was decreased in two varieties. In the next phase of ontogenesis (fl owering) antioxidant enzymes’ activity increased in both varieties: Poliska 90 and Skala, which suppressed the LPO growth. Conclusion. Treatment of plants with hydrogen peroxide promoted the formation of non-specifi c plant resistance and increased grain productivity of winter wheat varieties investigated.
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Claims 6
Claim · model-written summary
Hydrogen peroxide treatment intensified lipid peroxidation 24 h after treatment in winter wheat.
- Taxon
- Winter Wheat
Triticum aestivumt0 - Treatment
- hydrogen peroxide treatmente1
- Outcome
- lipid peroxidatione1
- Direction
- intensifi ede1
- Qualifier
- after 24 he1
- Comparator
- control onese4
- Setting
- in the fi elde5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat Plants”
e1“after 24 h of hydrogen peroxide treatment the processes of lipid peroxidation were intensifi ed”
e4“while the control ones – with distilled water”
e5“during ontogenesis in the fi eld”
Claim · model-written summary
Hydrogen peroxide treatment decreased antioxidant enzyme activity in two winter wheat varieties.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- hydrogen peroxide treatmente1
- Outcome
- antioxidant enzymese2
- Direction
- decreasede2
- Comparator
- control onese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat Plants”
e1“after 24 h of hydrogen peroxide treatment the processes of lipid peroxidation were intensifi ed”
e2“antioxidant enzymes’ activity was decreased in two varieties”
e4“while the control ones – with distilled water”
Claim · model-written summary
In the flowering phase, antioxidant enzyme activity increased in both winter wheat varieties after hydrogen peroxide treatment.
- Taxon
- Winter WheatTriticum aestivumt0
- Organ / stage
- floweringe3
- Treatment
- hydrogen peroxide treatmente1
- Outcome
- antioxidant enzymese3
- Direction
- increasede3
- Comparator
- control onese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat Plants”
e1“after 24 h of hydrogen peroxide treatment the processes of lipid peroxidation were intensifi ed”
e3“In the next phase of ontogenesis (fl owering) antioxidant enzymes’ activity increased in both varieties”
e4“while the control ones – with distilled water”
Claim · model-written summary
Increased antioxidant enzyme activity suppressed lipid peroxidation growth in winter wheat.
- Taxon
- Winter WheatTriticum aestivumt0
- Gene
- antioxidant enzymese3
- Outcome
- LPO growthe6
- Direction
- suppressede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat Plants”
e3“In the next phase of ontogenesis (fl owering) antioxidant enzymes’ activity increased in both varieties”
e6“which suppressed the LPO growth”
Claim · model-written summary
Treatment of plants with hydrogen peroxide promoted the formation of non-specific plant resistance in winter wheat.
- Taxon
- Winter WheatTriticum aestivumt0
- Treatment
- Treatment of plants with hydrogen peroxidee7
- Outcome
- formation of non-specifi c plant resistancee7
- Direction
- promotede7
- Comparator
- control onese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Winter Wheat Plants”
e4“while the control ones – with distilled water”
e7“Treatment of plants with hydrogen peroxide promoted the formation of non-specifi c plant resistance”
Claim · model-written summary
Hydrogen peroxide treatment increased grain productivity of winter wheat varieties.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- Treatment of plants with hydrogen peroxidee7
- Outcome
- grain productivitye0
- Direction
- increasede0
- Comparator
- control onese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“while the control ones – with distilled water”
e7“Treatment of plants with hydrogen peroxide promoted the formation of non-specifi c plant resistance”
e0“increased grain productivity of winter wheat varieties investigated”
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