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Table 2 Linear mixed models for total lysergic acids and lolines in tall fescue plants grown in Kentucky. The grasses from the wild origins (Orig) Gotland (G) and Sweden (S) and cultivar ‘Kentucky-31’ (KY31) were compared with wild origin Åland (A) in water (W) and nutrition (N) treatment (Treat) plots. Results are shown for with all main factors and those interactions that were statistically significant. Model estimates are standard errors (S.E.), degrees of freedom (df), and t-tests (t) with P-values (P) *** < 0.001,** < 0.01,* < 0.05, o < 0.1

From: Alkaloid Quantities in Endophyte-Infected Tall Fescue are Affected by the Plant-Fungus Combination and Environment

  LYSERGIC ACID      
  Value S.E. df t P  
Intercept 0.960 0.067 106 14.355 0.001 ***
Treat W -0.117 0.059 37 -1.967 0.057 o
Treat N 0.084 0.059 37 1.427 0.162  
Orig G 0.005 0.067 106 0.073 0.941  
Orig S 0.051 0.067 106 0.762 0.448  
Orig KY31 -0.142 0.067 106 -2.106 0.038 *
AIC 102.17      
loglikelihood -43.09      
  LOLINES      
  Value S.E. df t P  
Intercept 42.354 4.426 94 9.569 0.001 ***
Treat W 11.330 6.963 36 1.627 0.112  
Treat N 4.341 6.109 36 0.711 0.482  
W*N -7.556 9.161 36 -0.825 0.415  
Orig G 0.114 5.808 94 0.019 0.984  
Orig S 9.512 5.641 94 1.686 0.095 o
Orig KY31 -8.499 5.807 94 -1.463 0.147  
N*G -0.066 8.652 94 -0.008 0.994  
N*S -13.004 8.541 94 -1.523 0.131  
N*KY31 -4.916 8.652 94 -0.568 0.571  
W*G -7.875 8.098 94 -0.972 0.333  
W*S -20.203 8.125 94 -2.486 0.015 *
W*KY31 8.132 8.420 94 0.966 0.337  
N*W*G -1.509 11.770 94 -0.128 0.898  
N*W*S 26.624 11.709 94 2.273 0.025 *
N*W*KY31 -8.947 11.916 94 -0.751 0.455  
AIC 1109.56      
loglikelihood -536.78