Didymella glomerata

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Didymella glomerata - colonies on OA (A+B) and MEA (C+D), pycnidia (E+F), G) alternaroid chlamydospores, H) conidiogenous cells, I) conidia - scale bars: F = 100 μm, G–I = 10 μm
Author(s): N. Valenzuela-Lopez, J.F. Cano-Lira, J. Guarro, D.A. Sutton, N. Wiederhold, P.W. Crous and A.M. Stchigel
Source: Studies in Mycology (2018) 90, p. 27

Didymella glomerata (Corda) Q. Chen & L. Cai 2015

This fungus is widespread in temperate and subtropical regions. It has been associated with several diseases on a large variety of crops and other plants, from legumes to palms. These diseases include leaf spot, dieback, blight and fruit rot. D. glomerata is regarded as an opportunistic pathogen and has been even reported to cause mycotic diseases in humans (e.g. Valenzuela-Lopez et al., 2018).

Pycnidia are small, black and ostiolate with a diameter of around 200 µm. The pycnoconidia are single-celled, mostly hyaline, rounded to ellipsoidal, and have a size of 5-8 x 3-5 μm.

Taxonomic note:
This fungus has been known under the name Peyronellaea glomerata for a number of years and had been assigned as type species for the genus Peyronellaea (e.g. see the emended description of Peyronellaea by Aveskamp et al., 2010). However, Peyronellaea is now regarded as a synonym of Didymella (Chen et al., 2015).

Synonyms:
Coniothyrium glomeratum
Peyronellaea glomerata
Phoma glomerata