Puccinia crepidis-montanae
| Puccinia crepidis-montanae | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Puccinia crepidis-montanae | ||||||||||||
| Magnus |
Puccinia crepidis-montanae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite from Pippauen . 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 crepidis-montanae 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 crepidis-montanae grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Your spermogonia grow on both sides of the host leaves. The aecia of the species growing on both or mostly underside of the leaves are whitish and are in groups. Their light yellow aeciospores are 21–26 × 16–19 µm in size, broad to long ellipsoid and warty. The uredia of the fungus, which usually grow on the underside of the leaves, are yellow-brown. The golden to cinnamon-brown uredospores are 25–28 × 20–24 µm in size, ellipsoidal to broadly ellipsoidal and spiky. The parts of the species that grow on both or mainly underside of the leaves are black-brown, powdery and uncovered. The chestnut-brown teliospores are two-celled, usually ellipsoidal to long-ellipsoidal, finely warty and mostly 31–40 × 21–26 µm in size. Their stem is colorless.
distribution
The known distribution area of Puccinia crepidis-montanae extends from the western USA to Europe .
ecology
The host plants of Puccinia crepidis-montanae are various Pippaue ( Crepis 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 goes through a macrocyclical development cycle with Spermogonia, Aecien, Telien and Uredien. As an auto-ecologic parasite, it does not change host .
literature
- George Baker Cummins : Rust Fungi on Legumes and Composites in North America . University of Arizona Press, Tucson 1978, ISBN 0-8165-0653-1 .
Web links
Mushroom determiner: Photos, accessed on February 7, 2013 ( memento from April 26, 2013 in the web archive archive.today )