Uromyces tripogonicola
| Uromyces tripogonicola | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Uromyces tripogonicola | ||||||||||||
| Payak & Thirumalachar |
Uromyces tripogonicola is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass genera Astrebla and Tripogon . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in Asia and Australia.
features
Macroscopic features
Uromyces tripogonicola 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 Uromyces tripogonicola grows as with all Uromyces 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 fungus usually grow in rows and on both sides on the host's leaves and sheaths. Their golden to yellow uredospores are 27–32 × 21–27 µm in size, mostly ovate to ellipsoidal and spiky. The bilateral growing parts of the species are black-brown, compact and narrowly open. The chestnut-brown teliospores are unicellular, usually ovoid to ellipsoid and 26–33 × 20–25 µm in size. Its stem is yellowish to colorless and up to 35 µm long.
distribution
The known distribution area of Uromyces tripogonicola stretches from Australia to China to India .
ecology
The host plants of Uromyces tripogonicola are diverse Astrebla and Tripogon 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 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 .