Fitopatologia Brasileira (2005) 30, 510-515

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Cristiane F.L. Araújo, Karina P. Gramacho and José L. Bezerra (2005)
Reestudo de Anthomyces brasiliensis em Caesalpinia echinata no Brasil
[Restudy of Anthomyces brasiliensis on Caesalpinia echinata in Brazil]
Fitopatologia Brasileira 30 (5), 510-515
Abstract: The fungus, Anthomyces brasiliensis described in 1899 in Rio de Janeiro causing rust on Caesalpinia sp. or Piptadenia sp., was rediscovered in 2001 in Porto Seguro, Bahia, Brazil on Caesalpinia echinata. In the original description only telia and uredia were described, but spermogonia or aecia was not observed. Leaves with small necrotic lesions were collected from seedlings and trees of C. echinata at Pau-Brasil Experimental Station (CEPLAC) in the municipality of Porto Seguro, Bahia. Material from fresh and dried leaflets was examined under dissecting and compound microscopes. Micrographs were obtained using the compound and scanning electron microscopes. Group VI (type 7) spermogonia were found for the first time on the material collected in Bahia. They were subcuticular, round in outline, flattened, 70-100 x 30-56 ìm with spermatiophores hyaline, cylindrical, grouped in palisade, 12-14 x 2-3 µm. Spermatia ellipsoid, hyaline, smooth, 3-4 x 2-3 µm. Pustules associated with spermogonia were interpreted as uredinoid aecia. They are larger than uredia and telia, 200-700 µm wide. Aeciospores are similar to urediniospores, measuring 22-24 x 18-22 µm. Thus, A. brasiliensis can now be defined as a macrocyclic, autoecious rust containing 0 to IV states.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Database assignments for author(s): Karina P. Gramacho

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Anthomyces brasiliensis Caesalpinia (crop) Brazil (south)
Anthomyces brasiliensis Caesalpinia (crop) Brazil (NE)