Complex sentence: Researchers hope that by having the full genome sequence of the fungus that development of effective control methods will be possible, for example a mutatnt "M. grisea" unable to produce a penetration peg has been shown to lack the abilty to infect rice.
Split into simpler sentences: Researchers hope that by having the full genome sequence of the fungus the development of effective control methods will be possible. For example, a mutant "M. grisea" unable to produce a penetration peg has been shown to lack the abilty to infect rice.