what is a morel mushroom symbiosis?

Question

Can anyone tell me please

Answer 1

Mycorrhizal fungi form a partnership with plants, usually trees. The sponge mushrooms like the morel (Morchella) form mycorrhizae with trees including Larix occidentalis, Pinus contorta, Pinus ponderosa, and Pseudotsuga menziesii (members of the pine family, Pinaceae). The “Lady Slipper” Orchid (Cypripedium acaule) & another northern terrestrial orchid, Calypso bulbosa, also appear to be micorrhizal with morchella.
Ectomycorrhizal Fungi form a sheath around the root tip of the plant. From this they penetrate the root with their hyphae to create the Hartig net. The fungus then gains carbon (as carbohydrates) and other essential organic substances from the tree and in return helps the trees take up water, mineral salts and metabolites from the soil.
Lena Jonsson's Doctoral Thesis " Community Structure of Ectomycorrhizal Fungi in Swedish Boreal Forests" states
"Between 60,000 and 1.2 million ectomycorrhizas were found in one square metre of forest and 95% of the root tips examined had formed an ectomycorrhizal partnership."

Healthy trees remain in close symbiosis but stressed trees stop feeding their partners. This stimulates the fungus into withdrawing from the trees' roots. The fungus forms nodules below the ground called “sclerotia”. When conditions are right the sclerotia grow to emerge above the soil surface as a fruiting body, a morel. This is why these mushrooms show up after forest fires.

Answer 2

crazy?