Mushroom, the fungi

By most fungi, the agricultural plants are harmed
but umbrell of the lot is grown in agricultural farms.
Fungi cause diseases to human, by parasitizing,
and that umbrella is consumed for nutrients providing.
For food, parasitic fungi penetrate dead body of host,
mushroom penetrates our tummy to solve problem of food.
Releasing carbon dioxide, has a great ecological role.
For our health, savor, ecology; a good friend and host...
the mushroom... but yet be cautious
from that umbrella, which is poisonous.