PDF(Pubmed)
Abstract：
The electrical potential of the mycelia of a cord-forming wood decay fungus, Pholiota brunnescens, was monitored for over 100 days on a plain agar plate during the colonization onto a wood bait. Causality analyses of the electrical potential at different locations of the mycelium revealed a clear and stable causal relationship with the directional flow of the electrical potential from the hyphae at the bait location to other parts of the mycelium. However, this causality disappeared after 60 days of incubation, coinciding with the onset of slow electrical oscillation at the bait location, which occurred over one week per oscillation cycle. We speculated that the hyphae that initially colonized the bait may act as a temporary activity center, which generates electrical signals to other parts of the mycelium, thereby facilitating the colonization of the entire mycelial body to the bait. The week-long electrical oscillation represents the longest oscillation period ever recorded in fungi and warrants further investigation to elucidate its function and stability in response to environmental stimuli.
摘要：
形成绳索的木材腐烂真菌的菌丝体的电势，BrunnescensPholiota,在木饵定殖期间在普通琼脂平板上监测100天以上。菌丝体不同位置的电势的因果关系分析表明，电势从诱饵位置的菌丝到菌丝体其他部分的定向流动具有清晰而稳定的因果关系。然而,这种因果关系在孵化60天后消失了，与诱饵位置的缓慢电振荡的发生相吻合，发生在每个振荡周期一周内。我们推测最初在诱饵中定居的菌丝可能充当临时活动中心，向菌丝体的其他部分产生电信号，从而促进整个菌丝体对诱饵的定植。为期一周的电振荡是真菌有史以来最长的振荡周期，需要进一步研究以阐明其响应环境刺激的功能和稳定性。
