sentences:  "Rosellinia bunodes"' mycelia can also aggregate and extend through the soil as rhizomorphs to cause new infections on nearby susceptible hosts.Mycelia can also infect new hosts through root connections in the soil.The saprophytic nature of "R. bunodes" allows the fungus to survive easily without a host, and the pathogen can increase inoculum by colonizing dead or felled trees and stumps with large underground root masses.