Volatile-mediated killing of Arabidopsis thaliana by bacteria is mainly due to hydrogen cyanide.

ABSTRACT: The volatile-mediated impact of bacteria on plant growth is well documented, and contrasting effects have been reported ranging from 6-fold plant promotion to plant killing. However, very little is known about the identity of the compounds responsible for these effects or the mechanisms involved in plant growth alteration. We hypothesized that hydrogen cyanide (HCN) is a major factor accounting for the observed volatile-mediated toxicity of some strains. Using a collection of environmental and clinical strains differing in cyanogenesis, as well as a defined HCN-negative mutant, we demonstrate that bacterial HCN accounts to a significant extent for the deleterious effects observed when growing Arabidopsis thaliana in the presence of certain bacterial volatiles. The environmental strain Pseu

SUBMITTER: Blom D 

PROVIDER: S-EPMC3028696 | biostudies-literature | 2011 Feb

REPOSITORIES: biostudies-literature