Uromyces sporoboli
| Uromyces sporoboli | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Uromyces sporoboli | ||||||||||||
| Ellis & Everhart |
Uromyces sporoboli is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of leeks and sporobolus - sweet grasses . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in the central United States .
features
Macroscopic features
Uromyces sporoboli 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 sporoboli grows as with all Uromyces TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The aecia of the species have 24–28 × 21–24 µm large, spherical to elongated, hyaline aeciospores with a fine black surface. The cinnamon-brown uredia of the fungus grow on both sides of the host leaves. Their golden to cinnamon-brown uredospores are 36–40 × 26–32 µm in size, broadly ellipsoidal to ellipsoidal and spiky. The bilateral growing parts of the species are blackish, compact and early open. The chestnut-brown teliospores are unicellular, mostly ovate to oblong and 35–40 × 24–28 µm in size. The stem is colorless to yellowish and up to 100 µm long.
distribution
The known distribution area of Uromyces sporoboli essentially comprises the Great Plains .
ecology
The host plants of Uromyces sporoboli are for the haplonten leek ( Allium spp.) And various Sporobolus species for the dikaryote . 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 with spermogonia, Aecien, Telien and Uredien and completes a host change .
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .