Uromyces sporobolicola
| Uromyces sporobolicola | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Uromyces sporobolicola | ||||||||||||
| Lindquist |
Uromyces sporobolicola is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Sporobolus pyramidatus . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in much of America.
features
Macroscopic features
Uromyces sporobolicola 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 Uromyces sporobolicola 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 grow on the top of the host leaves. Their golden to cinnamon brown uredospores are 30–35 × 25–29 µm in size and spiky. The bilateral growing parts of the species are blackish and late open. The chestnut-brown teliospores are unicellular, usually angular ovoid and 26–34 × 17–23 µm in size. Their stalk is yellowish and up to 35 µm long.
distribution
The known distribution area of Uromyces sporobolicola extends from Argentina through Central America and the Caribbean to Texas .
ecology
The host plant of Uromyces sporobolicola is Sporobolus pyramidatus . 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 .