Colletotrichum gloeosporioides

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Colletotrichum gloeosporioides - A+B) cultures on PDA, C+D) conidia, E+F) appressoria, scale for C-F, shown in C = 20 µm
Author(s): B.S. Weir, P.R. Johnston and U. Damm
Source: Studies in Mycology, 2012, 73, p. 115

Colletotrichum gloeosporioides (Penz. 1882) Penz. & Sacc. 1884

The fungus has been described as a common pathogen with a world-wide distribution and a very large host range, causing anthracnose, rots as well as leaf diseases on fruits, vegetables and many other crops. A molecular investigation by Weir et. al. (2012) has provided evidence that the fungus is part of a species complex of closely related fungi. According to these authors, Colletotrichum gloeosporioides s.str. is wide-spread, infects mainly citrus and appears to be a different species from Glomerella cingulata (the previous teleomorph synonym). On citrus it infects various parts of the tree, but the fruits often remain symptomless and develop dark brown lesions (which may contain pinkish spore masses) after the harvest. The fungus has short, one-celled, ovoid conidia which disperse through wind or rain. Ascospores are important for long-term survival.

Colletotrichum coffeanum
Gloeosporium olivarum
Glomerella cingulata

The species complex also includes the following species which have been previously regarded as part of C. gloeosporioides:

For a taxonomic review of the C. gloeosporioides species complex see Weir et al. (2012).