Puccinia morthieri
| Puccinia morthieri | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia morthieri | ||||||||||||
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Puccinia morthieri is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of cranesbills . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It iswidespread in the Palearctic .
features
Macroscopic features
Puccinia morthieri 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 morthieri grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Spermogonia and aecia of the species are unknown. The same applies to uredia of the mushroom. Their light golden to hyaline uredospores are broadly ellipsoidal to broadly ovate, 22–27 × 18–23 µm in size and densely spiky. The parts of the species growing underneath the leaves are small, round, black-brown and long covered, they have brownish paraphyses. The brown teliospores are two-celled, usually ellipsoidal to spindle-shaped and 36–65 × 13–22 µm in size; their stalk is yellowish and up to 80 µm long.
distribution
The known distribution area of Puccinia morthieri covers all of Eurasia .
ecology
The host plants of Puccinia morthieri are cranesbills ( Geranium spp.). 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 of which only Telien are known so far.
literature
- George Baker Cummins : The Rust Fungi of Cereals, Grasses and Bamboos . Springer, Berlin 1971, ISBN 3-540-05336-0 .