Production of volatile metabolites in potatoes infected byErwinia carotovoravar.carotovoraandE. carotovoravar.atroseptica

摘要

Gas chromatography of headspace atmospheres was used to evaluate the production of metabolic volatiles by small lots of stored potato tubers (Solanum tuberosum) infected with eitherErwinia carotovoravar.carotovoraorErwinia carotovoravar.atrosepticabacteria. The total concentration of volatiles in the headspace of the plastic bags in which the potatoes were maintained increased exponentially as infection by bothE. carotovoravarieties developed. Temperature-related differences in the growth rates of theE. carotovoravarieties were reflected in minor differences in the patterns of volatiles from the infected material. There were no detectable differences in the range of volatile metabolites identified in the headspace profiles of theE. carotovorainfections and only one metabolite was produced at a significantly different rate by the two host-pathogen combinations.