The advantages of endophyte-infected over uninfected tall fescue in the growth and pathogen resistance are counteracted by elevated CO₂.

ABSTRACT: Atmospheric CO₂ concentrations are predicted to double within the next century. Despite this trend, the extent and mechanisms through which elevated CO₂ affects grass-endophyte symbionts remain uncertain. In the present study, the growth, chemical composition and pathogen resistance of endophyte-infected (E+) and uninfected (E-) tall fescue were compared under elevated CO₂ conditions. The results showed that the effect of endophyte infection on the growth of tall fescue was significantly affected by elevated CO₂. Significant advantage of E+ over E- tall fescue in tiller number, maximum net photosynthetic rate and shoot biomass occurred only under ambient CO₂. With CO₂ concentration elevated, the beneficial effect of endophyt

SUBMITTER: Chen W 

PROVIDER: S-EPMC5537266 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature