Tropical Soybean Rust - Aecidium glycines

This fungus was described only as an aecial state on soybean and is known from only a few countries in Africa.

Aecidium glycines Henn. 1895

Spots dark, irregular in outline.

Aecidium solitary, sparse to gregarious, mostly hypophyllous (on lower surface of leaves) but sometimes epiphyllous (on upper surface of leaves), also on petiole and stem, yellowish-ochraceous, pulvinate becoming cupulate, irregularly dehiscing, margin involuted.

Aeciospores subglobose, acute angular, pale yellow, contents granular, hyaline, 22-26 × 20-24 µm; cells of peridium angular, polyhedral, hyaline to pale yellow.

Host range: Glycine max (L.) Merr., Neonotonia wightii (Wight & Arn.) Lackey var. wightii

Geographic distribution: Kenya, Tanzania and Uganda

References:

Ebbels, D.L., and Allen, D.J. 1979. A supplementary and annotated list of plant diseases, pathogens and associated fungi in Tanzania. Phytopathol. Pap. 22: 1-89.

Lenne, J. M. 1990. World List of Fungal Diseases of Tropical Pasture Species. Phytopathol. Pap. 31: 1-162.

Watson, A.J. 1971. Foreign bacterial and fungus diseases of food, forage, and fiber crops. U.S.D.A. Agricultural Research Service : 111.

Nomenclature

Specimens in BPI

Additional distribution data

Suggested citation: Young, H.Y. Systematic Mycology and Microbiology Laboratory, ARS, USDA. . Invasive Fungi. Tropical Soybean Rust - Aecidium glycines. Retrieved November 21, 2009, from http://nt.ars-grin.gov/sbmlweb/fungi/index.cfm .