Репозиторий Брестского государственного университета им. А. С. Пушкина
Репозиторий Брестского государственного университета им. А. С. Пушкина
ISSN: 2709-7366
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  • 1. Научные публикации
  • 1.2 Статьи в журналах WoS, Scopus
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  •   Главная
  • 1. Научные публикации
  • 1.2 Статьи в журналах WoS, Scopus
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Morphological and functional responses of a metal-tolerant sunflower mutant line to a copper-contaminated soil series

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Дата
2018
Автор
Kolbas, Aliaksandr
Kolbas, Natallia
Marchand, Lilian
Herzig, Rolf
Mench, Michel
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Аннотации
The potential use of a metal-tolerant sunflower mutant line for biomonitoring Cu phytoavailability, Cu-induced soil phytotoxicity, and Cu phytoextraction was assessed on a Cu-contaminated soil series (13–1020 mg Cu kg−1) obtained by fading a sandy topsoil from a wood preservation site with a similar uncontaminated soil. Morphological and functional plant responses as well as shoot, leaf, and root ionomes were measured after a 1-month pot experiment. Hypocotyl length, shoot and root dry weight (DW) yields, and leaf area gradually decreased as soil Cu exposure rose. Their dose-response curves (DRC) plotted against indicators of Cu exposure were generally well fitted by sigmoidal curves. The half-maximal effective concentration (EC50) of morphological parameters ranged between 203 and 333 mg Cu kg−1 soil, corresponding to 290–430 μg Cu L−1 in the soil pore water, and 20 ± 5 mg Cu kg−1 DW in the shoots. The EC10 for shoot Cu concentration (13–15 mg Cu kg−1 DW) coincided to 166 mg Cu kg−1 soil. Total chlorophyll content and total antioxidant capacity (TAC) were early biomarkers (EC10: 23 and 51 mg Cu kg−1 soil). Their DRC displayed a biphasic response. Photosynthetic pigment contents, e.g., carotenoids, correlated with TAC. Ionome was changed in Cu-stressed roots, shoots, and leaves. Shoot Cu removal peaked roughly at 280 μg Cu L−1 in the soil pore water.
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http://rep.brsu.by:80/handle/123456789/116
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Брестский государственный университет им. А.С.Пушкина | Библиотека БрГУ им. А.С.Пушкина | Контакты | Обратная связь | Инструкция
Яндекс.Метрика