Uredo arundinellae-nepalensis
| Uredo arundinellae-nepalensis | ||||||||||||
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| Scientific name | ||||||||||||
| Uredo arundinellae-nepalensis | ||||||||||||
| Cummins |
Uredo arundinellae-nepalensis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the sweet grass Arundinella nepalensis . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in Australia . Since only its secondary crop shape is knownso far, it is classified in the genus Uredo . Your teleomorph probably belongs to the genus Phakopsora or Physopella .
features
Macroscopic features
Uredo arundinellae-nepalensis 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 Uredo arundinellae-nepalensis growing as with all Uredo TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The spermogonia and aecia of the species are not known. The uredia of the fungus growing on both sides of the host leaves are brownish, they have colorless to yellowish paraphyses . Their yellowish to golden brown uredospores are 25–33 × 17–23 µm in size, ellipsoidal to egg-shaped and spiky. The parts of the species are unknown.
distribution
The known distribution area of Uredo arundinellae-nepalensis only includes Brisbane, Australia .
ecology
The host plant of Uredo arundinellae-nepalensis is Arundinella nepalensis . 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 goes through a presumably macrocyclical development cycle with Spermogonia, Aecien, Uredien and Telien. Due to the lack of aecia and spermogonia, it is not possible to determine whether it changes host .
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .