ABSTRACT
Algal-inhabiting fungi are known as algicolous, and they represent a taxonomically diverse group of mutualists, endosymbionts, parasites, pathogens, and saprobes that are of evolutionary, ecological, and commercial interest. In this chapter the nature of algicolous filamentous fungi and their associations will be reviewed and the application of molecular fungal detection techniques discussed, detailing the diversity associated with the canopy of the marine alga
Fucus serratus
.
