A post examining human evolution and mycology – are we more than the fruiting bodies of fungi?
‘Fungi connect all living things in essential relational webs; without them, entire ecosystems would collapse’, reports writer and ecologist Doug Bierend. He explains, whilst body mass is mostly human generated, only 43% of our cells are human (the large cells). The rest are bacteria, fungi and microbes. For each 360 of our genes only one is human – the rest belong to other resident organisms.
Professors Ruth Ley and Taichi A. Suzuki observe that our gut bacteria has a long history. It accompanied the migration of our species from Africa, continuing to evolve with humans as we travelled and changed diet. Published in Salon on 30 September 2022, they report experiments showing that like genes, our gut microbes pass from one generation to the next. Given the amount of bacteria migrating through our bodies, male bacteria too is also transported to our children.
Endophytic fungi, microscopically visible as threads, are woven in and among the cells of plants– in their roots, stems, leaves, flowers, fruits. According to the biologist Merlin Sheldrake, their function is clear – to metabolise nutrients or to dissuade foraging, essentially acting as adopted organs to their host: and to receive photosynthesised energy compounds in return.
This view is a ‘top-down’ one. It assumes that evolution is a process concerning the perfection of species, from colonising primitive micro-organism to sophisticated mammal – the host. But what if humans are in fact part of the evolution of mycelium or bacteria? Did they colonise us, or are we indeed part of their process of evolution? In short, has our human form been developed by microbes to help disseminate and perpetuate their never-ending existence? Are we their genetic vehicles – simply an evolutionary ‘mobile carbon-banking asset’ for the bacteria that inhabit us??
One thing is certain – there is a vast number of connections and similarities between humans and the bacteria of which we comprise. Apart from genetic markers showing our common genesis, it is now known that the bacteria resident in our gut communicates information to our central processor, the brain. In turn, our brain responds to their messages and instruction. It is not that our brain (or whatever we consider to be ‘our consciousness’) is making decisions, but it is simply processing the data that it is given.
On a visual level, our brain bears distinct similarities to the slime mold fungus P. polycephalum, a single cell plasmodium. Experiments have shown that this fungus can take choices and make life-changing decisions. In 2000, biologist Toshiyuki Nakagaki reported an interesting experiment in Nature magazine, titled ‘Maze-solving by an amoeboid organism’. Given a food reward of oats this acellular organism identified the fastest route through an assortment of complex mazes. Other researchers found that the fungus also had memory. Although a single-celled organism, P. polycephalum operates as a network, exhibiting collective behavior. Each part of the slime mold is operating independently and sharing information with its neighboring sections, with no centralised processing. “I guess the analogy would be neurons in a brain,” biologist Chris Reid of Macquarie University says, “you have this one brain that’s composed of lots of neurons – it’s the same for the slime mold.”
Of course it is not known what other processes (if any) are carried out by the fungus, for nobody yet knows how information is propagated and shared within or without it. For example, might it feel joy or regret? However, like us, it certainly responds to outside stimuli and makes choices based upon its analysis of them. Incentives produce oscillation in the fungus, just as desires produce action in humans.
Chemical messages and reactions in living organisms appear to be triggered by electrical stimuli, in particular, changes in voltage. Most plants and even some mammals use these to communicate or navigate. Most humans appear to have retained minimal conscious sensitivity to these stimuli. However, some individuals claiming higher levels of perceptual sensitivity report that they recognise the events, even if they do not understand the cause. ESP, healers, dowsers, dancers and especially lovers acknowledge the presence of energy, its differential and its transmission.
Perhaps our human preoccupation with ‘self’ may be misguided? Might it be possible that we are just programmed by our bacteria, and our fate – both in life and death – lies in their hands and not ours?
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