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In situ electrochemical investigation of the interaction between bacteria Xylella fastidiosa DNA and copper(II) using DNA-electrochemical biosensors
| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | W.B.S. Machini A.M. Oliveira-Brett |
| Abstract | New emerging bacterial plant diseases are spreading fast in different geographical regions, and effective safety measures have not been found. Xylella fastidiosa (Xf) is a Gram-negative bacterial plant pathogen classified as a priority quarantine pest, which affects economically important agricultural crops. Although there is no treatment for diseases caused by Xf, copper-based compounds are widely applied to its hosts.A Xf-DNA-electrochemical biosensor based on bacterial DNA from Xf, is reported here for the first time, and the Cu(II)-Xf-dsDNA interaction was investigated in situ. The Cu(II)-DNA interaction was also evaluated using ct-dsDNA-, poly[G]- and poly[A]-electrochemical biosensors. The Cu(II)-Xf-dsDNA interaction occurs by Cu(II) binding at different sites, independent of the bacterial DNA sequence, leading to the condensation/aggregation of Xf-DNA strands due to the formation of a rigid Cu(II)-Xf-dsDNA complex structure. Cu(II) did not cause oxidative DNA damage. Resistance of the bacterial Xf-dsDNA to Cu(II) was observed. |
| Related Links | http://www.sciencedirect.com/science/article/pii/S138824812100059X |
| ISSN | 13882481 |
| DOI | 10.1016/j.elecom.2021.106975 |
| Journal | Electrochemistry Communications |
| Volume Number | 125 |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2021-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Industrial electrochemistry Chemistry Bacterial Dna Dna-electrochemical Biosensor Pesticide-dna Interaction Xylella Fastidiosa |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrochemistry |