Fungus servers a huge role in our ecological system by breaking down dead organics and create essential nutrients to our ecosystem.  It has many good uses such as penicillin and antibiotics, but is also eaten naturally in the form of truffles and mushrooms.  Fungus is also an ingredient in many beers and champagne.  

Fungus genetic similarity.

Fungi cause a variety of diseases in humans, plants, and animals.  These diseases can also be very hard to treat due to the genetic similarity to animals.  Some of the fungi that affect humans are, athlete’s foot, ringworm, jock itch, and yeast infections.  When it comes to plants, they’re affected by fungi such as stem rot, smuts, rusts, and leaf rot, to name a few.