Puccinia miscanthi
| Puccinia miscanthi | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia miscanthi | ||||||||||||
| Miura |
Puccinia miscanthi is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Imperata cylindrica , Saccharum narenga and Miscanthus and Plantago species. Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. Their distribution area extends over large parts of eastern Eurasia .
features
Macroscopic features
Puccinia miscanthi can only be recognized with the naked eye by means of the spore beds emerging 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 miscanthi 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 22–27 × 20–24 µm large, ellipsoidal to spherical aeciospores of hyaline to yellow color. The cinnamon brown uredia grow on both sides of the host's leaves. Their uredospores, which are also cinnamon- brown, are mostly ovate, 29–35 × 19–26 µm in size and finely spiky. The parts of the species are black-brown, exposed early and compact, they grow underneath the leaves. The hazel-brown teliospores are two-celled, usually long club-shaped and 40–60 × 16–23 µm in size; their stalk is brown and up to 15 µm long.
distribution
The known distribution area of Puccinia miscanthi covers an area that extends from Russia to China to Japan and the Philippines .
ecology
The host plants of Puccinia miscanthi are various Plantago species as Haplont , various Miscanthus and Plantago species as Dikaryont , Imperata cylindrica and Saccharum narenga . 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 apparently has a development cycle with Telien and Uredien, which manages without change of host; Spermogonia and aecia are apparently absent.
literature
- George B. Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .