| Title: | Airborne exposure of Rhizobium leguminosarum strain E20-8 to volatile monoterpenes: Effects on cells challenged by cadmium |
| Author(s): | Sa C; Matos D; Pires A; Cardoso P; Figueira E; |
| Address: | "Department of Biology, University of Aveiro, Aveiro, Portugal. Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal. Department of Biology & CESAM, University of Aveiro, Aveiro, Portugal. Electronic address: efigueira@ua.pt" |
| DOI: | 10.1016/j.jhazmat.2019.121783 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Volatile organic compounds (VOCs) are produced by plants, fungi, bacteria and animals. These compounds are metabolites originated mainly in catabolic reactions and can be involved in biological processes. In this study, the airborne effects of five monoterpenes (alpha-pinene, limonene, eucalyptol, linalool, and menthol) on the growth and oxidative status of the rhizobial strain Rhizobium leguminosarum E20-8 were studied, testing the hypothesis that these VOCs could influence Rhizobium growth and tolerance to cadmium. The tested monoterpenes were reported to have diverse effects, such as antibacterial activity (linalool, limonene, alpha-pinene, eucalyptol), modulation of antioxidant response or antioxidant properties (alpha-pinene and menthol). Our results showed that non-stressed cells of Rhizobium E20-8 have different responses (growth, cell damage and biochemistry) to monoterpenes, with alpha-pinene and eucalyptol increasing colonies growth. In stressed cells the majority of monoterpenes failed to minimize the detrimental effects of Cd and increased damage, decreased growth and altered cell biochemistry were observed. However, limonene (1 and 100?ª+mM) and eucalyptol (100?ª+nM) were able to increase the growth of Cd-stressed cells. Our study evidences the influence at-a-distance that organisms able to produce monoterpenes may have on the growth and tolerance of bacterial cells challenged by different environmental conditions" |
| Keywords: | Antioxidants/*pharmacology Cadmium/*toxicity Monoterpenes/*pharmacology Oxidative Stress/drug effects Rhizobium leguminosarum/*drug effects/growth & development/metabolism Volatile Organic Compounds/*pharmacology Cadmium Monoterpenes Oxidative stress Rhiz; |
| Notes: | "MedlineSa, Carina Matos, Diana Pires, Adilia Cardoso, Paulo Figueira, Etelvina eng Research Support, Non-U.S. Gov't Netherlands 2019/12/15 J Hazard Mater. 2020 Apr 15; 388:121783. doi: 10.1016/j.jhazmat.2019.121783. Epub 2019 Nov 28" |
