Puccinia pachypes
| Puccinia pachypes | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia pachypes | ||||||||||||
| Sydow & Sydow |
Puccinia pachypes is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Spodiopogon rhizophorus . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to India .
features
Macroscopic features
Puccinia pachypes 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 pachypes 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 uredia are yellow-brown and grow on the underside leaf surfaces of the host. Their yellow - brown uredospores are broadly ellipsoidal to almost spherical, 23–26 × 18–21 µm in size and finely spiky. The parts growing underneath the leaf are black-brown, uncovered early and compact. The hazelnut-brown teliospores are two-celled, usually broadly ellipsoid and 31–37 × 23–26 µm in size; their stem is yellowish or golden and up to 80 µm long.
distribution
The known distribution area of Puccinia pachypes only includes India .
ecology
The host plant of Puccinia pachypes is the sweet grass Spodiopogon rhizophorus . 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 .