Puccinia arundinariae
| Puccinia arundinariae | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia arundinariae | ||||||||||||
| Schweinitz |
Puccinia arundinariae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of winds and the sweet grass Arundinaria tecta . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It occurs in the eastern part of the USA .
features
Macroscopic features
Puccinia arundinariae can only be recognized with the naked eye by 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 arundinariae grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The aecia of the species have 25–29 × 23–28 µm large, spherical or broad ellipsoidal, hyaline aeciospores with a wrinkled surface. The cinnamon-brown uredia of the species grow on the underside of the leaves of the host plant. Their dark cinnamon-brown to golden uredospores are broadly ellipsoidal, 30–36 × 26–30 µm in size and finely spiky. The parts of the species growing underneath the leaves are black-brown and uncovered early. The golden to hazelnut brown teliospores of the fungus are two-celled, usually ellipsoidal to elongated ellipsoidal and 38–65 × 20–26 µm in size. Their stem is colorless and up to 160 µm long.
distribution
The known distribution area of Puccinia arundinariae extends from North Carolina to Texas .
ecology
The host plants of Puccinia arundinariae are for the Haplonten gnomes ( Smilax spp.) And Arundinaria tecta for the dikaryote . 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, Uredien, Spermogonia and Aecien and changes host.
literature
- George Baker Cummins: The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .