Puccinia solidipes
| Puccinia solidipes | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia solidipes | ||||||||||||
| Jackson & Holway |
Puccinia solidipes is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is a endoparasite the daisy family genus Piptothrix . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in Central America .
features
Macroscopic features
Puccinia solidipes 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 solidipes grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Their spermogonia grow on the upper side of the host leaves. The aecia of the species growing underneath the leaves are yellowish and are in small groups. They have 23–29 × 18–24 µm large, spherical to broadly ellipsoidal aeciospores with a warty surface. The uredia growing on both sides of the mushroom are cinnamon brown. Their likewise cinnamon-brown uredospores are 27–34 × 24–28 µm in size, ovate to broadly ellipsoidal and spiky. The bilateral growing parts of the species are black-brown, powdery and uncovered. The chestnut-brown teliospores are two-celled, usually broadly ellipsoidal and 42–53 × 36–39 µm in size. Their stem is colorless and up to 150 µm long.
distribution
The known distribution area of Puccinia solidipes extends from Guatemala to Mexico .
ecology
The host plants of Puccinia solidipes are Piptothrix areolare and Piptothrix palmeri . 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 development cycle with Spermogonia, Aecien, Telien and Uredien, but does not change host.
Taxonomy
The species was first described in 1918 by Herbert Spencer Jackson and Edward Willet Dorland Holway .
literature
- George Baker Cummins : Rust Fungi on Legumes and Composites in North America . University of Arizona Press, Tucson 1978, ISBN 0-8165-0653-1 .