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Activity of catalase and superoxidedismutase in leaves of halophyte plants under the tidal dynamics of the White Seaстатья
- Авторы: Terebova Elena N., Pavlova Maria A., Oreshnikova Natalia V.
- Журнал: Czech Polar Reports
- Том: 14
- Номер: 2
- Год издания: 2024
- Издательство: EMUNI Press
- Местоположение издательства: Чехия
- Первая страница: 174
- Последняя страница: 193
- DOI: 10.5817/CPR2024-2-11
- Аннотация: Activity of catalase (CAT) and superoxide dismutase (SOD) enzymes in the leaves ofhalophyte plants Triglochin maritima L., Plantago maritima L., Tripolium vulgare Bess.ex Nees and Zostera marina L. was investigated in a 2-year field experiment carried outin the community of the middle littoral marsh on the Pomor (western) coast of the WhiteSea (Belomorsk region, Russia). The community Tripolium vulgare–Bolboschoenusmaritimus–Triglochin maritima–Plantago maritima, was investigated during the tidalcycle. The plants grew under conditions of seawater pollution with high concentration ofnitrates (43.68 mgl-1), iron (0.15 mgl-1), nickel (0.15 mgl-1) and lead (0.024 mgl-1). Thetotal projective cover of species in the plant community reached 50% for T. vulgare, and20% for other dominant species. A direct positive correlation was found between theactivity of CAT and SOD in halophyte leaves (r = 0.51–0.68). This research revealed thespecies specificity of the enzyme activity level in Z. marina. The activity of CAT andSOD in its leaves was significantly lower (0.16±0.06 μmol H2O2/μg of protein;2.61±0.08 c.u./mg of protein, respectively), than in other species. The maximum valuesof CAT activity were found in T. vulgare and T. maritima (0.23–0.26 μmol H2O2/μg ofprotein), and SOD in T. vulgare 4.65 ± 1.12 c.u./mg of protein. The activity of CAT inplant leaves varied over a wide range (1.14–11.83 c.u./mg of protein) and did not dependon the tidal dynamics of the sea. In halophyte leaves, the regulation of plant redoxmetabolism under hypoxic conditions during flooding is supported by an increase inSOD activity, on average 1.98–2.95 at low tide and 4.12±6.73 c.u./mg of protein at hightide.
- Добавил в систему: Орешникова Наталья Владимировна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | matrice-Terebova_FINAL_29-9_web.pdf | matrice-Terebova_FINAL_29-9_web.pdf | 1,8 МБ | 2 октября 2024 [OreshnikovaNV] | |
| 2. | Экспертное_чехполар_ферменты.pdf | Экспертное_чехполар_ферменты.pdf | 415,5 КБ | 2 октября 2024 [OreshnikovaNV] |