Puccinia rufipes
| Puccinia rufipes | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia rufipes | ||||||||||||
| Dietel |
Puccinia rufipes is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the Thunbergia species and Imperata cylindrica . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in much of the Old World.
features
Macroscopic features
Puccinia rufipes 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 rufipes grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The aeciospores of the species are 19–28 × 16–25 µm in size, hyaline and finely wrinkled. The cinnamon brown uredia grow on both sides of the host's leaves. Their brownish uredospores are oval to ovate, 27–33 × 18–25 µm in size and finely spiky. The parts of the species are black-brown, exposed early and grow on both sides. The hazelnut-brown teliospores are two-celled, usually ellipsoid and 30–36 × 18–23 µm in size; their stalk is brownish and up to 90 µm long.
distribution
The well-known distribution area of Puccinia rufipes stretches from Africa over eastern Eurasia to Australia .
ecology
The host plants of Puccinia rufipes are different Thunbergia species as Haplont and Imperata cylindrica as Dikaryont . 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 with Aecien , Spermogonia , Telien and Uredien and completes a host change.
literature
- George B. Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .