Puccinia erythrophus
| Puccinia erythrophus | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia erythrophus | ||||||||||||
| Dietel |
Puccinia erythrophus is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass genera Erianthus and Miscanthus . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in East Asia .
features
Macroscopic features
Puccinia erythrophus 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 erythrophus 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 cinnamon-brown uredia of the species grow on the underside of the leaves of the host plants. Their hazelnut to cinnamon brown uredospores are broadly ellipsoidal to ovate, 25–33 × 18–23 µm in size and finely spiky. The underside growing parts are chocolate brown, uncovered early and confluent. The hazel-brown teliospores are two-celled, usually ellipsoidal and 33–45 × 16–20 µm in size; its stem is colorless to brownish and up to 130 µm long.
distribution
The known distribution area of Puccinia erythrophus includes eastern Russia , China , Japan and the Philippines .
ecology
The host plants of Puccinia erythrophus are the sweet grass genera Erianthus and Miscanthus . 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 .