Puccinia mitriformis
| Puccinia mitriformis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia mitriformis | ||||||||||||
| Ito |
Puccinia mitriformis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of bamboo - genus Sasa . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to Japan .
features
Macroscopic features
Puccinia mitriformis can only be recognized by the naked eye from 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 mitriformis 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 cinnamon-brown uredia of the fungus grow on the underside of the leaf surfaces of the host plant. Their cinnamon to dark cinnamon - brown uredospores are broadly ovate to spherical, 31–36 × 26–30 µm in size and finely spiky. The parts of the species growing underneath the leaves are chocolate brown, exposed early and compact. The golden to hazel-brown teliospores are one to two-celled, usually spindle-shaped or rolled up like a miter and 95–130 × 18–22 µm in size; their stalk is hyaline and up to 250 µm long.
distribution
The known distribution area of Puccinia mitriformis only includes Japan .
ecology
The host plants of Puccinia mitriformis are various bamboos of the genus Sasa . 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 .