Transcriptomic Analysis of Pseudomonas aeruginosa Response to Pine Honey via RNA Sequencing Indicates Multiple Mechanisms of Antibacterial Activity

Foods

GrigorisD. Amoutzias¹  Marios Nikolaidis¹  Ioannis Iliopoulos²  Dimitris Mossialos³  Christina Tsadila³  Ioannis Kafantaris³  Eleni Tsavea³  TilemachosG. Dimitriou³ 

[1] Bioinformatics Laboratory, Department of Biochemistry & Biotechnology, University of Thessaly, Biopolis, 41500 Larissa, Greece;Department of Basic Sciences, School of Medicine, University of Crete, 71003 Heraklion, Greece;Microbial Biotechnology-Molecular Bacteriology-Virology Laboratory, Department of Biochemistry & Biotechnology, University of Thessaly, Biopolis, 41500 Larissa, Greece;

关键词: Pseudomonas aeruginosa;    pine honey;    RNA-sequencing;    antimicrobial activity;    transcriptomics;    biological process;   

DOI  :  10.3390/foods10050936

来源: DOAJ

【 摘 要 】

Pine honey is a unique type of honeydew honey produced exclusively in Eastern Mediterranean countries like Greece and Turkey. Although the antioxidant and anti-inflammatory properties of pine honey are well documented, few studies have investigated so far its antibacterial activity. This study investigates the antibacterial effects of pine honey against P. aeruginosa PA14 at the molecular level using a global transcriptome approach via RNA-sequencing. Pine honey treatment was applied at sub-inhibitory concentration and short exposure time (0.5× of minimum inhibitory concentration –MIC- for 45 min). Pine honey induced the differential expression (>two-fold change and p ≤ 0.05) of 463 genes, with 274 of them being down-regulated and 189 being up-regulated. Gene ontology (GO) analysis revealed that pine honey affected a wide range of biological processes (BP). The most affected down-regulated BP GO terms were oxidation-reduction process, transmembrane transport, proteolysis, signal transduction, biosynthetic process, phenazine biosynthetic process, bacterial chemotaxis, and antibiotic biosynthetic process. The up-regulated BP terms, affected by pine honey treatment, were those related to the regulation of DNA-templated transcription, siderophore transport, and phosphorylation. Pathway analysis revealed that pine honey treatment significantly affected two-component regulatory systems, ABC transporter systems, quorum sensing, bacterial chemotaxis, biofilm formation and SOS response. These data collectively indicate that multiple mechanisms of action are implicated in antibacterial activity exerted by pine honey against P. aeruginosa.

【 授权许可】

Unknown