Metabolic Changes Induced by Silver Ions in Carlina acaulis
| Autor: | Magdalena Wójciak-Kosior, Maciej Strzemski, Sławomir Dresler, Iwona Gołoś, Jozef Kováčik, Ireneusz Sowa, Agnieszka Skalska-Kamińska, Agnieszka Hanaka, Barbara Hawrylak-Nowak, Małgorzata Cieślak |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
phenolic metabolites Chromosomal translocation Plant Science 01 natural sciences Ion Carlina acaulis 03 medical and health sciences chemistry.chemical_compound Triterpene organic acids heavy metals thiols Ecology Evolution Behavior and Systematics 030304 developmental biology chemistry.chemical_classification 0303 health sciences Ecology biology Chemistry Botany Glutathione biology.organism_classification Metabolic pathway QK1-989 Shoot Intracellular 010606 plant biology & botany Nuclear chemistry |
| Zdroj: | Plants Volume 8 Issue 11 Plants, Vol 8, Iss 11, p 517 (2019) |
| ISSN: | 2223-7747 |
| DOI: | 10.3390/plants8110517 |
| Popis: | Silver is one of the most toxic heavy metals for plants, inducing various toxic symptoms and metabolic changes. Here, the impact of Ag(I) on Carlina acaulis physiology and selected metabolites was studied using two Ag concentrations (1 or 10 µ M) after 14 days of exposure. The higher concentration of Ag(I) evoked reduction of growth, while 1 µ M Ag had a growth-promoting effect on root biomass. The translocation factor (< 0.04) showed that Ag was mainly retained in the roots. The 1 µ M Ag concentration increased the level of low-molecular-weight organic acids (LMWOAs), while 10 µ M Ag depleted these compounds in the roots. The increased concentration of Ag(I) elevated the accumulation of phytochelatins (PCs) in the roots and reduced glutathione (GSH) in the shoots (but not in the roots). At 1 µ M, Ag(I) elevated the level of phenolic and triterpene acids, while the 10 µ M Ag treatment increased the carlina oxide content in the roots. The obtained results indicate an alteration of metabolic pathways of C. acaulis to cope with different levels of Ag(I) stress. Our data imply that the intracellular binding of Ag(I) and nonenzymatic antioxidants contribute to the protection against low concentrations of Ag ions. |
| Databáze: | OpenAIRE |
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