Plants were grown in a greenhouse for 1 year prior to fungal inoculations and fertilized with Peters Excel Water Soluble Fertilizer (21-5-20 multi-purpose) at a concentration of1:100 fertilizer/water through the irrigation system, which was administered twice daily for 1 min at 9:00 a.m. and 4:00 p.m. Plants were roughly 135 cm tall and
0.5 cm in diameter at the time of inoculation.