The occurrence of peroxisomal/non-peroxisomal pathways for beta-oxidation of fatty acids in fungal and oomycete species. The first step in peroxisomal beta-oxidation is catalyzed by acyl-CoA oxidase. The first step in non-peroxisomal beta-oxidation is catalyzed by acyl-CoA dehydrogenase. The occurrence of each pathway in fungal and oomycete species was defined based on the identification of acyl-CoA oxidase and acyl-CoA dehydrogenase encoding enzymes in the genome of each species. Acyl-CoA oxidases were identified by homology with Pox1 from S. cerevisiae and acyl-CoA dehydrogenases by homology with an acyl-CoA dehydrogenase from N. crassa (NCBI accession no. CAD70984.1).