Puccinia deformata
| Puccinia deformata | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia deformata | ||||||||||||
| Berk. & MA Curtis |
Puccinia deformata is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the bamboo genus Olyra . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in Africa and America.
features
Macroscopic features
Puccinia deformata 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 deformata 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 yellowish uredia of the species grow on the inflorescence and on both sides of the leaves of the host plants. Their also yellowish uredospores are mostly ovate, 27–31 × 21–27 µm in size and finely spiky. The parts growing on both sides and on the inflorescence are chocolate brown, uncovered early and powdery. The golden to hazelnut brown teliospores are two-celled, transversely to longitudinally septate, ellipsoidal to oblong and 30–40 × 21–28 µm in size. Their stalk is colorless to yellowish and up to 150 µm long.
distribution
The known distribution area of Puccinia deformata includes Central America , the Caribbean and South America as well as Central Africa.
ecology
The host plants of Puccinia deformata are Olyra species. 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 .