Puccinia polliniae
| Puccinia polliniae | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia polliniae | ||||||||||||
| Barclay |
Puccinia polliniae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the Strobilanthes species and Microstegium nudum . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in eastern Asia .
features
Macroscopic features
Puccinia polliniae 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 polliniae grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The spherical aeciospores of the species are 16–18 × 16–18 µm in size, yellowish and finely wrinkled. The cinnamon brown uredia grow on both sides of the host's leaves. Their brownish uredospores are oval, 23–27 × 18–222 µm in size and finely spiky. The parts of the species are black-brown and exposed early. The golden to hazel-brown teliospores are two-celled, usually ellipsoidal to long-ellipsoidal and 33–43 × 15–23 µm in size. Their stem is gold-colored and up to 70 µm long.
distribution
The known distribution area of Puccinia polliniae extends from India to China to Japan .
ecology
The host plants of Puccinia polliniae are different Strobilanthes species as Haplont and Microstegium nudum 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 .