pathogen

This would introduce only a small number of GM plants into the environment, so farmers could choose not to harvest them while still benefiting from their pathogen-detecting ability.

这只需要把少量转基因作物引入到环境中，因此农民可以选择不收获它们，同时仍然享受它们的病原体探测能力的益处。

Scientists talk about the 'virulence' of a pathogen, but what does that mean to laypeople?

科学家谈论一种病原体的“毒力”，但是这对于普通人的意义是什么？