The spent culture supernatant of Pseudomonas syringae contains azelaic acid.

摘要: Pseudomonas syringae pv. actinidiae (PSA) is an emerging kiwifruit bacterial pathogen which since 2008 has caused considerable losses. No quorum sensing (QS) signaling molecule yet been reported from PSA and the aim of this study was to identify possible intercellular signals produced by PSA. A secreted metabolome analysis resulted in identification 83 putative compounds, one them nine carbon saturated dicarboxylic acid called azelaic acid. Azelaic acid, a nine-carbon (C9) plants as mobile signal that primes systemic defenses. In addition, its structure,(which associated with fatty biosynthesis) similar other known QS like Diffusible Signal Facor (DSF). For these reason it could be acting s molecule. Analytical structural studies NMR spectroscopy confirmed spent supernatants present. Quantification further revealed 20 μg/L were present also found several P. pathovars. The RNAseq transcriptome however did not determine whether behave This reports natural biosynthesis bacteria. production pathovars can plant-bacteria signaling.