Geotrichum (synonym Galactomyces) is a fungal genus with dimorphic colonial morphotypes (cream-coloured yeast-like form or mould-like colonies) included in the family Dipodascaceae within the Saccharomycetales (Alper et al., 2011;Kurtzman & Robnett, 2013). Geotrichum species are found in many substrates, including soil, plants, milk, and water, or associated with insects (Alper et al., 2011;Hoog & Smith, 2004). Some species are important postharvest plant pathogens of fruits and vegetables that cause economic losses in agriculture worldwide, due to the occurrence of sour rot in stored fruits and vegetables (Agrios, 2005;Hoog & Smith, 2004).These fungi infect fruits and vegetables through injuries caused by insects or mechanical wounds. The symptoms initially appear as water-soaked and soft areas accompanied by a white-to-cream fungal mycelium growth on the surface tissues and a sour odour (Agrios, 2005).Geotrichum is characterized based on the morphology of conidia (arthroconidia), which are formed in chains by the random fragmentation of the hyphae. Species are difficult to distinguish due to the