Puccinia gallula
| Puccinia gallula | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia gallula | ||||||||||||
| JF Hen & Cummins |
Puccinia Gallula is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the daisy family Porophyllum scoparium . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in southern North America .
features
Macroscopic features
Puccinia gallula 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 Gallula grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Their spermogonia and aecia are unknown, the same applies to the uredia of the fungus and their uredospores. The all growing on stalks Telien the type are black-gray, compact and covered, they are in dense groups. The golden-brown teliospores are two-celled, usually narrowly ovate to elongated and 44–58 × 17–21 µm in size. Their stalk is brownish and up to 45 µm long.
distribution
The known distribution area of Puccinia gallula stretches from Texas to the Mexican state of Sonora .
ecology
The host plant of Puccinia gallula is Porophyllum scoparium . 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, of which only Telien and their host are known; Uredien, Spermogonia and Aecien could not be assigned to her.
Taxonomy
The species was first described in 1973 by Joe Fleetwood Hennen and George Baker Cummins .
literature
- George Baker Cummins : Rust Fungi on Legumes and Composites in North America . University of Arizona Press, Tucson 1978, ISBN 0-8165-0653-1 .