Abstract
Manganese, a microelement important for plant metabolism, when accumulated at higher doses, may act as a stress factor. Such action of this element is not fully recognized and is currently being intensively studied. The influence of manganese, at high (1, 2 and 3 mM) concentrations, on the induction of oxidative stress in wheat cells was studied under in vitro conditions. Calli of two wheat cultivars, different in terms of stress tolerance, were cultured for 7 days on Murashige–Skoog media with or without auxin (2,4-D) and with additional Mn supplementation. Changes of malondialdehyde (MDA) concentration and the activity of enzymes (SOD, CAT and POX) involved in oxidative response as well as the accumulation of Mn and elements essential for plant development (Mn, Mg, S, Ca, K, P, Na, Zn, Mo, Cu, Fe) were detected. Moreover, proline and carbohydrate contents were determined to check the induction of osmotic stress. An increase of lipid peroxidation (expressed by MDA content), induced by ROS generation, was smaller in the tolerant (‘Parabola’) cultivar than in the sensitive one (‘Raweta’). The activation of antioxidative enzymes was more effective in the cells of tolerant wheat, where a lower quantity of Mn was accumulated. Mn uptake was correlated with a decrease of an amount of almost all the investigated elements. Auxin presence in the culture media accelerated the stressogenic effect of Mn.
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Claims 5
Claim · model-written summary
Manganese induced a smaller lipid peroxidation increase in tolerant Parabola than sensitive Raweta.
- Taxon
- wheat
Triticum aestivume1 - Material
- ‘Parabola’e0
- Treatment
- ROS generatione0
- Outcome
- lipid peroxidation (expressed by MDA content)e0
- Direction
- smallere0
- Comparator
- ‘Raweta’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increase of lipid peroxidation (expressed by MDA content), induced by ROS generation, was smaller in the tolerant (‘Parabola’) cultivar than in the sensitive one (‘Raweta’)”
e1“wheat cells”
Claim · model-written summary
Antioxidative enzyme activation was more effective in tolerant wheat cells.
- Taxon
- wheatTriticum aestivume0
- Outcome
- activation of antioxidative enzymese0
- Direction
- more effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The activation of antioxidative enzymes was more effective in the cells of tolerant wheat”
Claim · model-written summary
Less manganese accumulated in tolerant wheat cells.
- Taxon
- wheatTriticum aestivume0
- Outcome
- quantity of Mne0
- Direction
- lowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cells of tolerant wheat, where a lower quantity of Mn was accumulated”
Claim · model-written summary
Manganese uptake correlated with reductions in nearly all investigated elements.
- Taxon
- wheatTriticum aestivume1
- Compound
- Mne0
- Outcome
- amount of almost all the investigated elementse0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mn uptake was correlated with a decrease of an amount of almost all the investigated elements”
e1“wheat cells”
Claim · model-written summary
Auxin in culture medium accelerated the stress effect of manganese.
- Taxon
- wheatTriticum aestivume1
- Treatment
- Auxin presence in the culture mediae0
- Outcome
- stressogenic effect of Mne0
- Direction
- acceleratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Auxin presence in the culture media accelerated the stressogenic effect of Mn”
e1“wheat cells”
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