For instance a Volvariella volvacea fruiting body growing on spent P. tuber -regium substrate without inoculating the spent substrate of P. tuber regium with V. volvacea.
It is possible! After discarding, spent substrate is usually piled up when the temperature in the pile raise to kill all mycelia of Pleurotus. Straw mushroom spores from the air drop at the compost accidently then germinate ... High temperature of the compost pile is also very suitable condition for the development of Volvariella volvacea
Yes it is possible to have one species of mushroom grow on a spent substrate of another species if the substrate contains enough nutrients such as Organic nitrogen. Organic nitrogen is defined as organically bound nitrogen in the trinegative oxidation state. Urea, amines amino acids, proteins contains Organic nitrogen. If two species of mushroom grow together, there will be a competition
It is very possible, the spores of Volvariella volvacea can by chance drop on the spent substrate of Pleurotus from the air. Remember spores are light and mobile...
Yes It is possible. An air contamination with Volvariella volvacea spores from fungal fruit body see attached "Technical Bulletin 2007". Volvariella volvacea has two kinds of spores, one being the sexual basidiospores in tetrads and the other the asexual chlamydospores.
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