Puccinia sparganioides
| Puccinia sparganioides | ||||||||||||
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Puccinia sparganioides on red ash |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia sparganioides | ||||||||||||
| Ellis & Barthol. |
Puccinia sparganioides is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Adelien , Ash and Spartina - 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 large parts of America.
features
Macroscopic features
Puccinia sparganioides 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 sparganioides grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The aecia of the species have aeciospores 26–35 × 21–27 µm in size with a wrinkled surface and spherical to ellipsoidal shape. The cinnamon-brown uredia of the species usually grow on the underside of the leaves of the host plants. Their colorless uredospores are ellipsoidal to elongated, 30–43 × 20–27 µm in size and finely spiky. The mostly underside growing parts are dark brown, uncovered early and small. The hazel-brown teliospores are two-celled, long ellipsoidal to ellipsoidal and 40–58 × 17–23 µm in size; their stalk is colorless to yellowish and up to 100 µm long.
distribution
The known distribution area of Puccinia sparganioides includes the USA and Canada east of the Rocky Mountains as well as Brazil .
ecology
The host plants of Puccinia sparganioides are adelias ( Forestiana spp.) And ash ( Fraxinus spp.) For the haplont and Spartina 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 Telien, Uredien, Spermogonia and Aecien and changes host.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .
