ABSTRACT
The biocontrol of weeds was discussed by Boyetchko (2004), at great length in a comprehensive book (TeBeest 1991), and in excellent recent reviews by Auld and Morin (1995); Weston (1999). This chapter is an updated and highly condensed version of a chapter entitled “Molecular biology in weed biocontrol” (Gressel 2002), by permission of the publisher. Hypervirulence for the purpose of this chapter is defined as obtaining a higher level of virulence than found in the most virulent native strain of a mycoherbicide.
