Puccinia longicornis
| Puccinia longicornis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia longicornis | ||||||||||||
| Pat. & Har. |
Puccinia longicornis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is a endoparasite of bamboo - genres Nipponobambusa , Phyllostachys , Pleioblastus , Pseudosasa , Sasa and Sasa Ella . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in Japan and China .
features
Macroscopic features
Puccinia longicornis 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 longicornis 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 yellow-brown uredia of the fungus grow on both sides of the leaf surfaces of the host plant. Their golden to cinnamon - brown uredospores are broadly ellipsoidal to spherical, 28–34 × 24–30 µm in size and finely spiky. The parts of the species are black-brown, exposed early and compact. The golden to hazel-brown teliospores are two-celled, usually spindle-shaped to cylindrical-spindle-shaped and 65–100 × 14–19 µm in size; their stalk is hyaline and up to 200 µm long.
distribution
The known distribution area of Puccinia longicornis includes China and Japan .
ecology
The host plants of Puccinia longicornis are various bamboos of the genera Nipponobambusa , Phyllostachys , Pleioblastus , Pseudosasa , Sasa and Sasaella . 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 et al. 1971, ISBN 3-540-05336-0 .