Abstract:
:Heavy metals have the potential to interact and induce several stress responses in the plants; thus, effects of heavy metal stress on DNA damages and total antioxidants level in Urtica dioica leaves and stems were investigated. The samples are sampled from areas with different metal exposition. Metal content was analyzed by Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-AES), for total antioxidants level assessment the Ferric-Reducing Antioxidant Power (FRAP) assay was used, and genomic DNA isolation from frozen plant samples was performed to obtain DNA fingerprints of investigated plant. It was found that heavy metal contents in stems generally changed synchronously with those in leaves of the plant, and extraneous metals led to imbalance of mineral nutrient elements. DNA damages were investigated by Random Amplified Polymorphic DNA (RAPD) technique, and the results demonstrated that the samples exposed to metals yielded a large number of new fragments (total 12) in comparison with the control sample. This study showed that DNA stability is highly affected by metal pollution which was identified by RAPD markers. Results suggested that heavy metal stress influences antioxidant status and also induces DNA damages in U. dioica which may help to understand the mechanisms of metals genotoxicity.
journal_name
Biomed Res Intjournal_title
BioMed research internationalauthors
Gjorgieva D,Kadifkova Panovska T,Ruskovska T,Bačeva K,Stafilov Tdoi
10.1155/2013/276417subject
Has Abstractpub_date
2013-01-01 00:00:00pages
276417eissn
2314-6133issn
2314-6141journal_volume
2013pub_type
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journal_title:BioMed research international
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pub_type: 临床试验,杂志文章
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