Puccinia hikawaensis
| Puccinia hikawaensis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia hikawaensis | ||||||||||||
| Hiratsuka & Uchida |
Puccinia hikawaensis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Sasamorpha kesuzu . 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 hikawaensis 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 hikawaensis 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 dark brown uredia of the fungus grow on the underside of the leaf surfaces of the host plant. Their almost hazel-brown uredospores are broadly ovate, 32–38 × 28–32 µm in size and finely spiky. The underside growing parts of the species are cinnamon brown, exposed early and compact. The yellowish to golden brown teliospores are two-celled, usually narrowly ovate to subfusiform and 52–70 × 16–24 µm in size; their stalk is hyaline and up to 200 µm long.
distribution
The known distribution area of Puccinia hikawaensis only includes Japan .
ecology
The host plant of Puccinia hikawaensis is Sasamorpha kesuzu . 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 their host are known; Uredien, Spermogonia and Aecien 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 .