Puccinia nigroconoidea
| Puccinia nigroconoidea | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia nigroconoidea | ||||||||||||
| I. Hino & Katumoto |
Puccinia nigroconoidea is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of an indeterminate phyllostachys - sweet grass . 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 nigroconoidea 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 nigroconoidea 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 black-brown and uncovered early. The golden to light brown teliospores are one to two-celled, spindle-shaped-ellipsoid or ellipsoid and 70–85 × 15–22 µm in size. Their stem is colorless and up to 150 µm long.
distribution
The known distribution area of Puccinia nigroconoidea apparently only includes China . Since the species was found in a US quarantine center, the exact distribution cannot be determined.
ecology
The host plant of Puccinia nigroconoidea is an unspecified Phyllostachys species. 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 .