Fundamentals of Microbiology

1.4.1.1 Nutrition

Fungi grow best in dark, moist habitats. Based on the mode of nutrition they are classified as parasites and saprophytes.

1. Obligate saprophytes – that live on dead organic matter not infecting living organisms.

2. Facultative parasites or saprophytes – that are capable of living on dead organic matter or live organisms.

3. Obligate parasites – that require living protoplasm.

They are chemo-organoheterotrophs and use organic material a source of carbon, electrons and energy. Fungi are usually aerobic. Some yeasts are facultatively anaerobic and can obtain energy by fermentation.