Puccinia inanipes
| Puccinia inanipes | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia inanipes | ||||||||||||
| Dietel & Holway |
Puccinia inanipes is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is a endoparasite the Korbblütlergattung Eupatorium . 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 inanipes 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 inanipes grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Their spermogonia grow predominantly on the upper side of the host leaves. The aecia of the species, usually growing underneath the leaves, are vesicular and form small groups. They have 24–28 × 18–24 × 21–25 µm in size, cinnamon-brown and ovate-ellipsoidal aeciospores with a warty surface. The uredia growing on both sides of the mushroom are cinnamon brown. Their uredospores are similar to the aeciospores. The parts of the species growing underneath the leaf are black-brown, powdery and uncovered. The deep chestnut-brown teliospores are two-celled, usually broadly ellipsoid and 36–42 × 33–27 µm in size. Their stem is up to 160 µm long.
distribution
The known distribution area of Puccinia inanipes extends from Arizona to southern Mexico .
ecology
The host plants of Puccinia inanipes are different water species . 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 with Spermogonia, Aecien, Telien and Uredien, but 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 .