Erwinia amylovora catalases KatA and KatG are virulence factors and delay the starvation-induced viable but non-culturable (VBNC) response.

ABSTRACT: The life cycle of the plant pathogen Erwinia amylovora comprises periods inside and outside the host in which it faces oxidative stress caused by hydrogen peroxide (H₂ O₂ ) and other compounds. The sources of this stress are plant defences, other microorganisms and/or exposure to starvation or other environmental challenges. However, the functional roles of H₂ O₂ -neutralizing enzymes, such as catalases, during plant-pathogen interactions and/or under starvation conditions in phytopathogens of the family Erwiniaceae or closely related families have not yet been investigated. In this work, the contribution of E. amylovora catalases KatA and KatG to virulence and survival in non-host environments was determined using catalase gene mutants and expre

SUBMITTER: Santander RD 

PROVIDER: S-EPMC6638134 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature