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The volatile organic compound dimethylhexadecylamine affects bacterial growth and swarming motility of bacteria

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Abstract

Bacteria have developed different intra- and inter-specific communication mechanisms that involve the production, release, and detection of signaling molecules, because these molecules serve as the autoinducers involved in “quorum sensing” systems. Other communication mechanisms employ volatile signaling molecules that regulate different bacterial processes. The Arthrobacter agilis strain UMCV2 is a plant growth promoting actinobacterium, which induces plant growth and inhibits phytopathogenic fungi by emitting the dimethylhexadecylamine (DMHDA). However, little is known about the effect of this volatile compound on A. agilis UMCV2 itself, as well as on other bacteria. By exposing A. agilis UMCV2 and bacteria of the genus Bacillus and Pseudomonas to different concentrations of DMHDA, this study showed the dose-dependent effects of DMHDA on A. agilis UMCV2 growth, cellular viability, swarming motility, and expression of marker genes of the flagellar apparatus of bacteria. DMHDA was found to also modulate swarming motility of Bacillus sp. ZAP018 and P. fluorescens UM270, but not that of P. aeruginosa PA01. These data indicate that DMHDA is involved in both intra- and inter-specific bacterial interaction.

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Funding

We thank the Valencia-Macias foundation (México, Grant 3.1) and the Coordinación de la Investigación Científica UMSNH (México, Grant 2.22) for providing financial support.

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Authors

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Ramiro Mártínez-Cámara Performed research, analyzed data, wrote the paper,

Vicente Montejano-Ramírez Performed research

Gabriel Moreno-Hagelsieb Analyzed data, contributed new methods or models

Gustavo Santoyo Analyzed data, contributed new methods or models

Eduardo Valencia Cantero Conceived of or designed study, analyzed data, wrote the paper

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Correspondence to Eduardo Valencia-Cantero.

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Martínez-Cámara, R., Montejano-Ramírez, V., Moreno-Hagelsieb, G. et al. The volatile organic compound dimethylhexadecylamine affects bacterial growth and swarming motility of bacteria. Folia Microbiol 65, 523–532 (2020). https://doi.org/10.1007/s12223-019-00756-6

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  • DOI: https://doi.org/10.1007/s12223-019-00756-6

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