41-The Ecological Role of Volatile and Soluble Sec

41-The Ecological Role of Volatile and Soluble Secondary Metabolites Produced by Soil Bacteria.ReviewTheEcologicalRoleofVolatileandSolubleSecondaryMetabolitesProducedbySoilBacteriaOlafTyc,,1ChunxuSong,1,3JeroenS.Dickschat,1,4MichielVos,2andPaolinaGarbeva1,*Therichdiversityofsecondarymetabolitesproducedbysoilbacteriahasbeenappreciatedforoveracentury,andadvancesinchemicalanalysisandgenomesequencingcontinuetogreatlyadvanceourunderstandingofthisbiochemicalcomplexity.However,wearejustatthebeginningofunderstandingthephysi-cochemicalpropertiesofbacterialmetabolites,thefactorsthatgoverntheirproductionandecologicalroles.Interspecificinteractionsandcompetitorsens-ingareamongthemainbioticfactorsaffectingtheproductionofbacterialsecondarymetabolites.Manysoilbacteriaproducebothvolatileandsolublecompounds.Incontrasttosolublecompounds,volatileorganiccompoundscandiffuseeasilythroughair-andgas-filledporesinthesoilandlikelyplayanimportantroleinlong-distancemicrobialinteractions.Inthisreviewweprovideanove