Puccinia anthephorae
| Puccinia anthephorae | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia anthephorae | ||||||||||||
| Arthur & Johnston |
Puccinia anthephorae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Anthephora hermaphrodita . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in South and Central America .
features
Macroscopic features
Puccinia anthephorae can only be recognized with the naked eye from the spore beds protruding on the surface of the host. They grow in nests that appear as yellowish to brown spots and pustules on the leaf surfaces.
Microscopic features
The mycelium of Puccinia anthephorae grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Aecia or spermogonia of the species are not known. The yellow-brown uredia of the fungus grow on both sides of the host leaves. Their golden to cinnamon-brown uredospores are 28–31 × 24–27 µm in size, broadly ovate to broadly ellipsoidal and finely spiky. The bilateral growing parts of the species are blackish and early open. The chestnut-brown teliospores are one to two-celled, usually broadly ovate to broadly ellipsoidal and 33–40 × 25–30 µm in size. Their stalk is yellowish and up to 100 µm long.
distribution
The known distribution area of Puccinia anthephorae includes the Caribbean and continental South and Central America from Colombia to Guatemala .
ecology
The host plant of Puccinia anthephorae is Anthephora hermaphrodita . The fungus feeds on the nutrients present in the storage tissue of the plants, its spore beds later break through the leaf surface and release spores. The species has a development cycle of which only Telien and Uredien and their host are known; Spermogonia and aecia could not be assigned to the fungus.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .