| Issue |
E3S Web Conf.
Volume 254, 2021
International Scientific and Practical Conference “Fundamental and Applied Research in Biology and Agriculture: Current Issues, Achievements and Innovations” (FARBA 2021)
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|
|---|---|---|
| Article Number | 01032 | |
| Number of page(s) | 8 | |
| Section | Genetic Resources Are the Basis of Selection and Seed Production in the Development of Organic Agriculture | |
| DOI | https://doi.org/10.1051/e3sconf/202125401032 | |
| Published online | 05 May 2021 | |
Antioxidant status of barley seedlings under conditions of excess manganese
1 Federal Agricultural Research Center of the North-East named N.V. Rudnitsky, 610007 Kirov, Russian Federation
2 Vyatka State University, 610000 Kirov, Russian Federation
* Corresponding author: simolga07@gmail.com
The system of protection against the effects of heavy metals (TM) can differ not only in different species of plants, but also in different varieties. Manganese (Mn), as a biogenic element, is necessary for normal plant growth and development. However, in the case of concentrations exceeding the optimal level, it negatively affects both linear plant growth and physiological processes. The paper presents data on the assessment of the effect of excess manganese (II) ions (30, 60 and 90 mg/l of active substance) on barley seedlings of different varieties. Resistance of plants to ionic toxicity of manganese (II) was judged by the value of antioxidant activity (AOA) of superoxide dismutase (SOD), the content of low-molecular antioxidants (chlorophyll a and b, carotenoids and anthocyanins) in barley leaves. For most of the varieties studied, an increase in AOA of SOD, the content of anthocyanins indicating the activation of plant protective mechanisms, was noted. The amount of green pigments, as well as carotenoids, on the contrary, decreased, compared with the control, which indicated a violation of the processes of photosynthesis in them.
© The Authors, published by EDP Sciences, 2021
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