Puccinia tenella
| Puccinia tenella | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia tenella | ||||||||||||
| I. Hino & Katumoto |
Puccinia tenella is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of an undetermined bamboo . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to China .
features
Macroscopic features
Puccinia tenella 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 tenella 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 same applies to uredia and uredospores of the fungus. The parts of the species growing underneath the leaves are chocolate brown and uncovered early. The golden to light chestnut brown teliospores are two-celled, ellipsoidal to long-ellipsoidal and 42–68 × 16–25 µm in size. Their stem is colorless and up to 250 µm long.
distribution
The known distribution area of Puccinia tenella only includes the Chinese Hong Kong .
ecology
The host plant of Puccinia tenella is an unspecified bamboo (Bambusoideae sp.). 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 Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .