Antagonism between phytohormone signalling underlies the variation in disease susceptibility of tomato plants under elevated CO2.

ABSTRACT: Increasing CO2 concentrations ([CO2]) have the potential to disrupt plant-pathogen interactions in natural and agricultural ecosystems, but the research in this area has often produced conflicting results. Variations in phytohormone salicylic acid (SA) and jasmonic acid (JA) signalling could be associated with variations in the responses of pathogens to plants grown under elevated [CO2]. In this study, interactions between tomato plants and three pathogens with different infection strategies were compared. Elevated [CO2] generally favoured SA biosynthesis and signalling but repressed the JA pathway. The exposure of plants to elevated [CO2] revealed a lower incidence and severity of disease caused by tobacco mosaic virus (TMV) and by Pseudomonas syringae, whereas plant susceptibility to nec

SUBMITTER: Zhang S 

PROVIDER: S-EPMC4378629 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature