Diaporthe phaseolorum

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Diaporthe phaseolorum: a) perithecia on Foeniculum vulgare stem in culture, b) ascus with 8 ascospores, c) ascospores, d) pycnidia on F. vulgare stem in culture, e) conidiophores, f) alpha-conidia, g) beta-conidia, — scale bars: a, d = 1 mm; b, c, e, f, g = 5 μm (click on image to enlarge it)
Author(s): J.M. Santos, K. Vrandecic, J. Cosic, T. Duvnjak and A.J.L. Phillips
Source: Persoonia (2011) vol. 27, p. 16

Diaporthe phaseolorum (Cooke & Ellis 1878) Sacc. 1882

The fungus causes is widely distributed and has been recorded from a variety of host plants. It is mainly of economic importance on soybeans, where it causes pod and stem blight as well as seed decay. The species is homothallic, that is a single isolate can form both mating types and reproduce sexually.

For Diaporthe phaseolorum var. caulivora, see Diaporthe caulivora.
For Diaporthe phaseolorum var. meridionalis, see Diaporthe aspalathi.

Vernacular names
• English: Phomopsis seed decay
stem canker of soybean
soybean seed decay
pod and stem blight
• Français: phomopsis du soja

Synonyms:
Diaporthe sojae
Phomopsis phaseoli
Phomopsis sojae