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 通过泥土传播并通过根系感染植物。 更，会产生厚膜孢子或“休眠孢子” ，们可以在土壤中休眠数十年。