Pseudomonas syringae pv. tabaci 6605 (Pta6605) is a causal agent of wildfire disease in host tobacco plants. Although chemotaxis has been shown to be necessary for Pta6605 in tobacco infection, the chemoattractants at the site of infection are unclear. Pta6605 was attracted to the apoplastic fluid from not only host tobacco leaves but also non-host plant leaves, indicating that Pta6605 is attracted to common plant metabolites. Metabolome analysis of apoplastic fluid from tobacco leaves revealed that amino acids including γ-aminobutyric acid and organic acids are abundant, suggesting that these compounds are potential chemoattractants.

丁香假单胞菌pv. tabaci 6605 ( Pta 6605) 是宿主烟草植物野火病的病原体。尽管趋化性已被证明是Pta 6605 在烟草感染中所必需的，但感染部位的趋化剂尚不清楚。Pta 6605 不仅被寄主烟叶的质外体液吸引，而且还被非寄主植物叶子的质外体液吸引，这表明Pta 6605 被常见的植物代谢物吸引。对烟叶质外体液的代谢组分析表明，包括γ-氨基丁酸和有机酸在内的氨基酸含量丰富，表明这些化合物是潜在的化学引诱剂。