Puccinia virgae-aureae
| Puccinia virgae-aureae | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia virgae-aureae | ||||||||||||
| ( DC. ) Lib. |
Puccinia virgae-aureae is a species of mushroom belonging to the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the genus Solidago . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It iswidespread in the Holarctic .
features
Macroscopic features
Puccinia virgae-aureae can only be recognized with the naked eye by means of 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 virgae-Aureae 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 telia of the species growing on the underside of the host leaves are black-gray, compact and covered, they are in dense groups. The chestnut-brown teliospores are two-celled, usually spindle-shaped to cylindrical and 40–55 × 15–20 µm in size. Their stalk is brownish and up to 30 µm long.
distribution
The known distribution area of Puccinia virgae-aureae includes the temperate regions of North America and Eurasia .
ecology
The host plants of Puccinia virgae-aureae are different species of goldenrod . 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 Uredien and their host are known so far; Spermogonia and Aecien could not be assigned to her.
Taxonomy
The species was first described in 1815 by Augustin-Pyrame de Candolle as Xyloma virgae-aureae , in 1837 Marie-Anne Libert transferred the species to the genus Puccinia .
literature
- George Baker Cummins : Rust Fungi on Legumes and Composites in North America . University of Arizona Press, Tucson 1978, ISBN 0-8165-0653-1 .