TR4 spreads through the dirt and infects plants via their root systems. Worse, it produces chlamydospores, or " resting spores, " which can lie dormant in the soil for decades.

TR4 通过播并通过根系感染植物。 更糟糕是，会产生厚膜孢或“休眠孢” ，可以在壤中休眠数十年。