Puccinia kiusiana
| Puccinia kiusiana | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia kiusiana | ||||||||||||
| Hiratsuka |
Puccinia kiusiana is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Hystrix japonica . 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 kiusiana can only be recognized with the naked eye by means of the spore beds emerging 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 kiusiana 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 grow on the top of the host's leaves. Their brownish uredospores are oval to ovate, 22–28 × 18–21 µm in size and finely spiky. The upper leaf parts of the species are chocolate brown, exposed early and compact. The golden to hazel-brown teliospores are two-celled, usually spindle-shaped to long ovoid and 40–56 × 13–19 µm in size; their stalk is hyaline and up to 60 µm long.
distribution
The known distribution area of Puccinia kiusiana only includes Japan .
ecology
The host plant of Puccinia kiusiana is Hystrix japonica . 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 of which only Telien and Uredien are known so far; Spermogonia and aecia could not be assigned to the fungus.
literature
- George B. Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .