Capnodiales » Teratosphaeriaceae » Microcyclospora

Microcyclospora pomicola

Microcyclospora pomicola J. Frank, B. Oertel, Schroers & Crous, in Frank et al., Persoonia 24: 100 (2010).

Index Fungorum number: IF 516844; Facesoffungi number: FoF 09723, Fig. 1

Description: see Frank et al. (2010).

Material examined: see Frank et al. (2010).

Fig. 1 Microcyclospora pomicola (CPC 16175, holotype, re-drawn from Frank et al. 2010). a, b Conidiogenous loci. c, d Conidia. Scalebars: a–d = 10 µm.

Importance and distribution

Microcyclospora comprises five species known on three different host plants within Anacardiaceae, Fagaceae and Rosaceae. Microcyclospora rumicis has been transferred to another genus Sphaerulina. Microcyclospora has been reported mainly from Europe (Germany, Netherlands, Slovenia) and North America (Canada). Species of Microcyclospora are saprobic and play a role in nutrient recycling within the ecosystem. Some species are pathogenic and cause wilts, leaf spots, such as leaf spot blueberry diseases (Frank et al. 2010) and sooty blotches on various hosts (Surup et al. 2014).


Industrial relevance and applications

Microcyclospora are useful in agricultural industry as they produce obionin A which has cytotoxic effects and antifungal activities (Surup et al. 2015). Microcyclospora malicola has biocontrol property against the anthracnose fungus Colletotrichum fioriniae (Surup et al. 2015). Microcyclospora malicola also exhibit activity against filamentous fungus Mucor hiemalis and gram-positive bacterium Bacillus subtilis (Surup et al. 2015).


Biochemical importance of the genus, chemical diversity or applications

Microcyclospora produces various chemical compounds. Some of them are obionin A (Surup et al. 2015), trichothecolone acetate and the derivative (S)-7-hydroxytrichothecolone (Surup et al. 2014).



Batzer JC, Gleason ML, Harrington TC, Tiffany LH. 2005 Expansion of the sooty blotch and flyspeck complex on apples based on analysis of ribosomal DNA gene sequences and morphology. Mycologia 97, 1268 –1286.

Frank J, Crous P, Groenewald JZ, Oertel B, Hyde KD, Phengsintham P, Schroers HJ. 2010 – Microcyclospora and Microcyclosporella: novel genera accommodating epiphytic fungi causing sooty blotch on apple. Persoonia 24, 93–105.

Surup F, Medjedović A, Schroers HJ, Stadler M. 2015 Production of Obionin A and Derivatives by the Sooty Blotch Fungus Microcyclospora malicola. Planta medica 81, 1339–1344.

Surup F, Medjedovic A, Szczygielski M, Schroers HJ, Stadler M. 2014 – Production of Trichothecenes by the Apple Sooty Blotch Fungus Microcyclospora tardicrescens. Journal of agricultural and food chemistry 62, 3525–3530.


About Dothideomycetes

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