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Dry matter (DM) biomass for shoots (A), roots (B), and total plant (C) of Lolium perenne either uninfected (E−), or infected with different strains of Epichloë festucae var. lolii endophyte (common toxic strain, E+; and novel strains AR1, AR37, and NEA2). Each treatment . Additinally shown is the root to shoot ratio (D).
