With truffles at least it’s because those conditions aren’t actually well understood and the timescales are long so it’s very difficult to brute force through a trial and error approach. It’s not just about specific light level, temperature or even specific nutrient availability as with many things, that has been tried and failed. It seems to function symbiotically with various surrounding life forms, definitely trees but maybe more like soil bacteria or other fungi, and it takes time for the fungus to build infrastructure before it starts producing the bits we like to eat. Over that time it is exposed to a variety of environmental conditions. Which other organisms and which conditions are necessary and which are noise is not fully understood.
Unlike most plants that are able to convert sunlight into energy in a
process called photosynthesis, truffles are instead totally dependent on
certain trees to carry out this process for them. In return, the
truffle helps its host tree by using its hyphae to reach nutrients and
water from pockets of soil that the tree cannot reach by itself.1 This kind of a symbiotic relationship between fungi and the roots of a tree is called mycorrhiza.
https://www.foodunfolded.com/article/how-truffles-are-grown
Latest Answers