Puccinia basiporula
| Puccinia basiporula | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia basiporula | ||||||||||||
| HS Jackson & Holway |
Puccinia basiporula is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is a endoparasite the Korbblütlergattung Eupatorium . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to Guatemala .
features
Macroscopic features
Puccinia basiporula can only be recognized with the naked eye from 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 basiporula grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Their spermogonia and aecia are not yet known. The uredia of the fungus, which usually grow on the underside of the host leaves, are light cinnamon brown. Their golden to cinnamon-brown uredospores are 22-25 × 22-25 µm in size, roughly spherical and spiky. The parts of the species growing underneath the leaf are black-brown, powdery and uncovered. The chestnut-brown teliospores are two-celled, usually broadly ellipsoid, wrinkled and 34–39 × 25–28 µm in size. Their stem is colorless and up to 100 µm long.
distribution
The known distribution area of Puccinia basiporula is Guatemala. However, one find is also known from Russia.
ecology
The host plants of Puccinia basiporula are Eupatorium mairetanium , E. phoenicolepsis and E. rafelense . 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 macrocyclical development cycle with Spermogonia, Aecien, Telien and Uredien.
literature
- George Baker Cummins : Rust Fungi on Legumes and Composites in North America . University of Arizona Press, Tucson 1978, ISBN 0-8165-0653-1 .