Puccinia agrophila
| Puccinia agrophila | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia agrophila | ||||||||||||
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Puccinia agrophila is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of nightshade as well as Andropogon - sweet grasses and Capillipedum hugelii . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in Africa and India .
features
Macroscopic features
Puccinia agrophila 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 agrophila grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The aecia of the fungus have 18–22 × 15–18 µm large, angular-spherical aeciospores with a wrinkled surface. The yellow uredia of the species usually grow on the underside of the leaves of the host plant. Their uredospores are usually spherical to broadly ellipsoidal, 23–27 × 18–23 µm in size and finely spiky. The bilateral growing parts of the species are blackish and uncovered early. The dark golden to light hazel-brown teliospores of the fungus are two-celled, usually broadly ovate to broadly ellipsoidal and 33–40 × 21–26 µm in size. Their stalk is colorless and 60–130 µm long.
distribution
The known distribution area of Puccinia agrophila includes Africa and India .
ecology
The host plants of Puccinia agrophila for the haplonts are the nightshades Solanum incanum and S. indicum and sweet grasses of the genus Andropogon and Capillipedum hugelii for the dikaryotes . 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 .