Puccinia stenotaphri
| Puccinia stenotaphri | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia stenotaphri | ||||||||||||
| Cummings |
Puccinia stenotaphri is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of lamp-cleaner grasses , millet grass and Stereochlaena cameronii . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. The distribution area includes Mozambique , Mauritius , India , Florida and Puerto Rico .
features
Macroscopic features
Puccinia stenotaphri can only be recognized with the naked eye by means of 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 stenotaphri grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Spermogonia or aecidia are not known. The yellowish to brownish uredia grow on both sides of the host's leaves. Your uredospores are ellipsoidal to oval, 30–40 × 25–28 µm in size, golden to cinnamon brown and finely spiky. The parts of the species are black and covered by the epidermis. The brown teleutospores are two-celled, club-shaped to long-club-shaped and 44–60 × 19–26 µm in size; its stem is 15 µm long and brownish.
distribution
The distribution area of Puccinia stenotaphri includes Mozambique , Mauritius and India , also in Florida and Puerto Rico the species has been proven.
ecology
The host plants of Puccinia stenotaphri are Pennisetum ( Pennisetum ) spp., Setaria ( Setaria spp.) And Stereochlaena cameronii . 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 with Telien and Uredien, Spermogonia and Aecidien absent.
literature
- George B. Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .