Ni-induced Changes in Nitrate Assimilation and Antioxidant Metabolism of Verbascum olympicum Boiss.: Could the Plant be Useful for Phytoremediation or/and Restoration Purposes?

Verbascum olympicum Boiss. (Scrophulariaceae) were studied as a candidate plant for remediating the Ni polluted soils. The metabolic responses, such as nitrate assimilation (nitrate reductase and glutamine synthetase activity) and antioxidant system activity [superoxide dismutase (SOD), catalase (CA...

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Bibliographic Details
Published in:International journal of phytoremediation 2015-06, Vol.17 (6), p.546-555
Main Authors: Akpinar, Ayşegül, Arslan, Hülya, Güleryüz, Gürcan, Kırmızı, Serap, Erdemİr, Ümran Seven, Güçer, Şeref
Format: Article
Language:English
Subjects:
Antioxidants
Antioxidants - metabolism
Ascorbate Peroxidases - metabolism
Assimilation
Bioaccumulation
Biodegradation, Environmental
Catalase - metabolism
Chlorophyll
Environmental Restoration and Remediation - instrumentation
Environmental Restoration and Remediation - methods
Exposure
Flowers & plants
Metabolism
Nickel
Nickel - metabolism
nickel stress
Nitrates
Nitrates - metabolism
oxidative defense
Oxidative stress
Phytoremediation
Plant Proteins - metabolism
Plants (organisms)
Roots
Scrophulariaceae
Sod
Superoxide Dismutase - metabolism
Verbascum
Verbascum - enzymology
Verbascum - metabolism
Verbascum olympicum
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Summary:Verbascum olympicum Boiss. (Scrophulariaceae) were studied as a candidate plant for remediating the Ni polluted soils. The metabolic responses, such as nitrate assimilation (nitrate reductase and glutamine synthetase activity) and antioxidant system activity [superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) activity], of this species exposed to nickel in Hoagland's nutrient medium were investigated as remediation performance parameters. The accumulation of nickel and the variations in the content of some elements (B, Cu, Fe, Mg, Mn, Mo and Zn) and some growth parameters, such as the water content, biomass production, and contents of chlorophyll and soluble protein, were also examined. The accumulation of Ni in both the roots and leaves varied depending on the exposure times and doses. Increased oxidative stress was suggested by the increases in the activities of SOD, CAT and APX. Although some element contents were inhibited by Ni treatments, these inhibitory effects was decreased depending on the time, and even these elements are accumulated in roots. These results are the novelties in the use of this species in biotechnology.
ISSN:1522-6514
1549-7879
DOI:10.1080/15226514.2014.922926