Puccinia kenmorensis
| Puccinia kenmorensis | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia kenmorensis | ||||||||||||
| Cummins |
Puccinia kenmorensis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the bearded grass Bothriochloa decipiens . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to Australia .
features
Macroscopic features
Puccinia kenmorensis 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 kenmorensis 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 hazel-brown uredia of the fungus grow on the underside of the leaf surfaces of the host plant. Their dark cinnamon to hazelnut brown uredospores are broadly oval to ovate, 23–29 × 19–23 µm in size and finely spiky. The parts of the species are not known. The hazelnut brown teliospores are two-celled, usually ellipsoidal or broadly ellipsoidal and 23–30 × 18–22 µm in size; their stalk is 8–12 µm long.
distribution
The known distribution area of Puccinia kenmorensis only includes Australia .
ecology
The host plant of Puccinia kenmorensis is the bearded grass Bothriochloa decipiens . 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 uredia and their host are known so far ; Telia, spermogonia and aecia 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 .