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J Hazard Mater

Title:		Rhizobium sensing of airborne saturated aldehydes of different sizes modulates the response to Cd exposure
Author(s):		Matos D; Sa C; Cardoso P; Pires A; 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"
Journal Title:		J Hazard Mater
Year:		2020
Volume:		20200407
Issue:
Page Number:		122629 -
DOI:		10.1016/j.jhazmat.2020.122629
ISSN/ISBN:		1873-3336 (Electronic) 0304-3894 (Linking)
Abstract:		"alpha,beta-unsaturated aldehydes are generally reported as being toxic, however for saturated aldehydes information is scarce. Here we report the effects on growth and biochemical endpoints related to oxidative stress of Rhizobium colonies under airborne exposure to C6 to C13 saturated aliphatic aldehydes and exposed or not to Cd. Smaller aldehydes (C6 to C10) and larger aldehydes (C11 to C13) had distinct effects on cell biochemistry. Smaller aldehydes reduced and larger ones increased lipid peroxidation. The activity of superoxide dismutase was also decreased by smaller aldehydes and increased by the larger ones. Thus, even an exposure at a distance to saturated aldehydes is able to influence the biochemical status of bacterial cells, and the effects appear to be dependent on the size and thus on distinct properties (e.g. volatility and liposolubility). Moreover, some aldehydes (the smaller saturated ones) may even have a beneficial effect, that switches when cells are in oxidative stress (exposed to Cd). This influence can be used in different contexts, by increasing the resilience of bacterial communities to environmental contaminants with oxidizing effect or by sensitizing bacteria to antimicrobial agents"
Keywords:		*Aldehydes/toxicity Cadmium Lipid Peroxidation Oxidative Stress *Rhizobium Bacteria Saturated aldehydes Volatile organic compounds;
Notes:		"MedlineMatos, Diana Sa, Carina Cardoso, Paulo Pires, Adilia Figueira, Etelvina eng Netherlands 2020/04/21 J Hazard Mater. 2020 Aug 5; 395:122629. doi: 10.1016/j.jhazmat.2020.122629. Epub 2020 Apr 7"