Found in microbial communities around the world, Aspergillus fungi are pathogens, decomposers, and important sources of biotechnologically-important enzymes. Each Aspergillus species is known to contain more than 250 carbohydrate active enzymes (CAzymes), which break down plant cell walls and are of interest to Department of Energy (DOE) researchers working on the industrial production of sustainable alternative fuels using candidate bioenergy feedstock crops. Additionally, each fungal species is thought to contain more than 40 secondary metabolites, small molecules with the potential to act as biofuel and chemical intermediates.