Abstract
The effect of a rare earth element europium (Eu) on the long-distance transport of a plant defence compound quercetin (Q) was investigated. The complex Q/Eu3+ was synthesized in a HEPES buffer and tested for its transport ability through Arabidopsis thaliana and its ability to interact with target molecules in plant cells. Our results show that complexation with Eu3+ enhanced the transport of Q through Arabidopsis roots. During the transport, the complex degraded and released a free Q to tissues where Q was originally not available. Thus, the plant became better supplied with the defensive compound Q. The obtained spectrophotometric data imply that one of the reasons for the Q/Eu3+ degradation was the interaction of the complex with double stranded RNAs (dsRNAs) present in Arabidopsis. Since dsRNAs are replicative forms of plant RNA viruses, the ability of Q/Eu3+ to release a free Q in their presence suggests further investigation of this complex as a potential antiviral agent.
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Abbreviations
- CMVsat:
-
satellite-associated Cucumber mosaic virus
- DPBA:
-
diphenylboric acid-2 aminoethyl ester
- dsRNA:
-
double-stranded RNA
- Eu:
-
europium
- HEPES:
-
4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid
- Q:
-
quercetin
- ssRNA:
-
single-stranded RNA
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Acknowledgements: This work was financially supported by the Ministry of Science, Education and Sport of Croatia (098-0982914-2918 and broj Rusak projekta) The authors are grateful to Dr. M. HadŽija, the Laboratory for Molecular Endocrinology and Transplantation, Ruđer Bošković Institute, for help with a fluorescence microscope.
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Šola, I., Piantanida, I., Crnolatac, I. et al. Europium improves the transport of quercetin through Arabidopsis thaliana . Biol Plant 59, 554–559 (2015). https://doi.org/10.1007/s10535-015-0508-z
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DOI: https://doi.org/10.1007/s10535-015-0508-z