Puccinia pogonatheri
| Puccinia pogonatheri | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia pogonatheri | ||||||||||||
| Petch |
Puccinia pogonatheri is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Pogonatherum paniceum . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It can be found in large parts of Southeast Asia .
features
Macroscopic features
Puccinia pogonatheri 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 pogonatheri 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 uredia are dark cinnamon brown in color and grow on the underside of the leaves on the surface of the host. Their dark cinnamon - brown uredospores are oval, 25–30 × 19–23 µm in size and finely spiky. The parts of the species are black-brown, exposed early and compact. The hazelnut-brown teliospores are two-celled, usually ellipsoidal to club-shaped ellipsoidal and 40–48 × 20–24 µm in size; their stalk is brownish and up to 85 µm long.
distribution
The known distribution area of Puccinia pogonatheri ranges from India and Sri Lanka via Taiwan and the Philippines to New Guinea .
ecology
The host plant of Puccinia pogonatheri is Pogonatherium paniceum . 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, 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 et al. 1971, ISBN 3-540-05336-0 .