Puccinia arundinis-donacis
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| Puccinia arundinis-donacis | ||||||||||||
| Hiratsuka |
Puccinia arundinis-donacis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Arundo donax . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. Its distribution area includes China and Japan .
features
Macroscopic features
Puccinia arundinis-donacis 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 arundinis-donacis grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The species evidently lacks aecia and spermogonia . The uredia grow on both sides of the host's leaves. Their yellow - brown uredospores are usually broadly ellipsoidal to ovate, 26–34 × 18–20 µm in size and finely spiky. The parts of the species are black-brown, exposed early and compact. The golden-brown teliospores are two-celled, usually elliptical in shape and 32–46 × 16–20 µm in size; their stalk is up to 70 µm long.
distribution
The known distribution area of Puccinia arundinis-donacis covers an area that extends from China to Japan .
ecology
The host plant of Puccinia arundinis-donacis is Arundo donax . 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 Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin et al. 1971, ISBN 3-540-05336-0 .