Puccinia lophatheri
| Puccinia lophatheri | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia lophatheri | ||||||||||||
| ( Sydow & Sydow ) Hiratsuka |
Puccinia Lophatheri is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grasses Centotheca lappacea and Lophatherum gracile . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in East Asia.
features
Macroscopic features
Puccinia lophatheri 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 Lophatheri grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Aecia or spermogonia of the species are not known. The brownish uredia of the species grow on both sides of the leaves of the host plants. Their yellow to cinnamon - brown uredospores are usually ovate, 24–28 × 20–23 µm in size and finely spiky. The branches growing on both sides are black-brown, uncovered early and powdery. The golden to light hazelnut brown teliospores are two-celled, generally longitudinally septate, broadly ellipsoidal and 26–31 × 23–26 µm in size. Their stalk is colorless to yellowish and up to 75 µm long.
distribution
The known distribution area of Puccinia lophatheri includes China , Taiwan and Japan .
ecology
The host plants of Puccinia lophatheri are the sweet grasses Centotheca lappacea and Lophatherum gracile . 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 of which only Telien and Uredien and their host are known; Spermogonia and aecia could not be assigned to the fungus.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .