Puccinia entrerriana
| Puccinia entrerriana | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia entrerriana | ||||||||||||
| Lindquist |
Puccinia entrerriana is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass genus Stipa . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to Argentina .
features
Macroscopic features
Puccinia entrerriana can only be recognized with the naked eye by 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 entrerriana 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 same applies to their uredia . The cinnamon-brown uredospores are ellipsoidal to ovate, 20–24 × 18–21 µm in size and finely spiky. The parts of the species that grow on the top of the leaves are chocolate brown, powdery and uncovered early. The golden or clear hazel-brown teliospores are two-celled, sometimes longitudinally septate, usually spindle-shaped-ellipsoidal to ellipsoidal and 38–52 × 16–22 µm in size. Their stalk is light yellowish to colorless and up to 150 µm long.
distribution
The known distribution area of Puccinia entrerriana only includes Argentina .
ecology
The host plant of Puccinia entrerriana is an unspecified Stipa species. 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 their host are known; Uredien, Spermogonia and Aecien 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 .