Puccinia garnotiae
| Puccinia garnotiae | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Puccinia garnotiae | ||||||||||||
| Ramakrishnan & Sundaram |
Puccinia garnotiae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of Garnotia arundinaceae . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. The distribution area is in India .
features
Macroscopic features
Puccinia garnotiae 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 garnotiae grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Spermogonia or aecidia are not known. The cinnamon-brown uredia grow on the underside of the host's leaves. Their uredospores are ovate to broadly ellipsoidal, 28–33 × 21–24 µm in size, cinnamon-brown and finely spiky. The parts of the species are cinnamon brown and covered by the epidermis. The golden to light hazelnut brown teleutospores are two-celled, ellipsoidal to almost cylindrical and 42–68 × 18–22 µm in size; their stalk is 20–25 µm long and hyaline .
distribution
The known distribution area of Puccinia garnotiae only includes India .
ecology
The host plant of Puccinia garnotiae is Garnotia arundinaceae . 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 Telien and Uredien, which manages without change of host. Spermogonia and aecidia are absent.
literature
- George Baker Cummins : The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .