Puccinia arundinellae-setosae
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Puccinia arundinellae-setosae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Arundinella setosa . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is endemic to China .
features
Macroscopic features
Puccinia arundinellae-setosae 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 arundinellae-setosae grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Aecia of the species are not yet known. The cinnamon brown uredia grow on both sides of the host's leaves. Their uredospores, which are also cinnamon- brown, are usually ovate to almost spherical, 21–30 × 18–21 µm in size and finely spiky. The parts of the species are black-brown, exposed early and compact. The hazel-brown teliospores are two-celled, usually ellipsoidal to elongated ovoid and 30–43 × 16–21 µm in size; their stalk is brown and up to 20 µm long.
distribution
The known distribution area of Puccinia arundinellae-setosae is limited to the Chinese Kunming .
ecology
The host plant of Puccinia arundinellae-setosae is Arundinella setosa . 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 .