Puccinia trabutii
| Puccinia trabutii | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia trabutii | ||||||||||||
| Roumeguère & Saccardo |
Puccinia trabutii is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Arundo donax and Phragmites - sweet grasses . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It iswidespread in the Palearctic .
features
Macroscopic features
Puccinia trabutii 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 trabutii 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 the uredia of the fungus. Its yellowish to golden uredospores are ellipsoidal to broadly ellipsoidal, 26–32 × 20–24 µm in size and finely spiky. The parts of the species growing on both sides of leaves and sheaths are chocolate brown, confluent and uncovered early on. The golden to hazelnut brown teliospores are two-celled, usually ellipsoidal and 48–60 × 24–30 µm in size. Their stalk is light yellowish to colorless and up to 250 µm long.
distribution
The known distribution area of Puccinia trabutii extends from Morocco through Central Asia to Pakistan .
ecology
The host plants of Puccinia trabutii are Arundo donax and Phragmites 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 .