Puccinia globulifera
| Puccinia globulifera | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia globulifera | ||||||||||||
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Puccinia globulifera is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the daisy family Otopappus pringlei . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to Mexico .
features
Macroscopic features
Puccinia globulifera can only be recognized with the naked eye by means of the spore beds emerging 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 globulifera grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Their spermogonia and aecia are so far unknown. The uredia of the fungus growing on the underside of the host leaves are cinnamon brown. Their light cinnamon-brown to golden uredospores are 18–23 × 17–21 µm in size, ovate to broadly ellipsoidal and spiky. The parts of the species growing on both sides or mostly underneath the leaves are black-brown, powdery and uncovered. The chestnut-brown teliospores are two-celled, usually broadly ellipsoidal, spiky and mostly 27–32 × 22–34 µm in size. Their stalk is light brown to colorless and up to 75 µm long.
distribution
The known range of Puccinia globulifera includes Nayarit , Jalisco and Guerrero .
ecology
The host plant of Puccinia globulifera is Otopappus pringlei . 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 .