Effects of elevated [CO2] on maize defence against mycotoxigenic Fusarium verticillioides
MARTHA M. VAUGHAN, ALISA HUFFAKER, ERIC A. SCHMELZ, NICOLE J. DAFOE, SHAWN CHRISTENSEN, JAMES SIMS, VITOR F. MARTINS, JAY SWERBILOW, MARITZA ROMERO, HANS T. ALBORN, LEON HARTWELL ALLEN and PETER E. A. TEAL
Article first published online: 13 MAY 2014 | DOI: 10.1111/pce.12337
Elevated [CO2] increases maize susceptibility to Fusarium verticillioides proliferation but mycotoxin levels are unaltered. The attenuation of maize 13-LOXs and JA production correlates with reduced terpenoid phytoalexins and increased susceptibility. Furthermore, the attenuated induction of 9-LOXs, which have been suggested to stimulate mycotoxin biosynthesis, is consistent with reduced fumonisin per unit fungal biomass at elevated [CO2].