Crucially, the team got the same result in the case of uninfested plants that had been in uninterrupted hyphal contact with the infested one, but had had root contact blocked.

关键一点，有一个实验组也得出了同样的结果——该组植株未受虫害，也没有与感染植株切断菌丝联系，仅阻隔了根接触。