Colletotrichum truncatum

Colletotrichum • Glomerellales • Sordariomycetes • Ascomycota • fungi • plant diseases • pests-diseases-weeds

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typical symptoms and signs of Colletotrichum truncatum on infected soybean seeds (a–c). Dark, depressed, and irregular spots on cotyledons, stem, petioles, and pods (d–f) (click on image to enlarge it)
Author(s): Thais R. Boufleur et al.
Source: Molecular Plant Pathology, 22 (4), 393-409

Colletotrichum truncatum (Schwein. 1832) Andrus & W.D. Moore 1935

The fungus is wide-spread, especially in tropical and subtropical regions. It causes anthracnose on various crops like soybean, Capsicum or lentil. It also causes other diseases like brown blotch on cowpea.

Appressoria are light brown and irregular. The asexual fruiting bodies (acervuli) are surrounded by dark brown and thick walled setae. Conidia are sickle-shaped, aseptate and hyaline with a size of around 25 x 2.5 µm.

For a review of soybean anthracnose caused by this and some other fungi see Boufleur et al. (2021).

Synonyms:
Glomerella glycines
Glomerella truncata

• Other images of Colletotrichum truncatum (IPM Images - click to enlarge)
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  symptoms on Cyamopsis tetragonoloba

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  symptoms on Phaseolus lunatus

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  symptoms on Cyamopsis tetragonoloba

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  asexual spores