Exploring the Exclusive Isolation of Pseudomonas syringae in Peltigera Lichens via Metabolite Analysis and Growth Assays.

ABSTRACT: The specific association of the potentially plant-pathogenic Pseudomonas syringae with Peltigera lichens raises questions about the factors driving this host specificity. To explore this, the metabolic profile of seven lichen species belonging to three genera (Cladonia, Peltigera and Stereocaulon) was analysed using LC-MSMS. In addition, we assessed the growth of P. syringae strains in media supplemented with extracts from each lichen species. This revealed that Peltigera exhibits lower metabolite richness compared to other genera, but shows a higher chemical investment in specific compounds. Growth kinetics showed comparable P. syringae growth across lichen-supplemented media, except for Cladonia arbuscula and Cladonia sp., where the former exhibited lower growth rates. Inhibition assays

SUBMITTER: Ramirez N 

PROVIDER: S-EPMC11914869 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature