Puccinia turgidipes
| Puccinia turgidipes | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Puccinia turgidipes | ||||||||||||
| Jackson & Holway |
Puccinia turgidipes is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the daisy family Viguiera deltoidea . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in southwest North America .
features
Macroscopic features
Puccinia turgidipes 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 turgidipes grows as with all Puccinia TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Your spermogonia grow on the underside of the host leaves. The aecia of the species are cup-shaped. They have 23–27 × 18–22 µm in size, spherical to long ellipsoidal, hyaline aeciospores with a warty surface. The uredia of the mushroom growing on the top of the leaves are chocolate brown. Their dark cinnamon-brown uredospores are 26–31 × 17–25 µm in size, spherical to broadly ellipsoidal and spiky. The bilateral growing parts of the species are black-brown, powdery and uncovered. The dark maroon teliospores are two-celled, usually broadly ellipsoidal and 38–44 × 30–35 µm in size. Their stem is colorless and up to 100 µm long.
distribution
The known distribution area of Puccinia turgidipes extends from southern Arizona and California to Baja California .
ecology
The host plant of Puccinia turgidipes is Viguiera deltoidea . 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.
Taxonomy
The species was first described by Jackson and Holway in 1918 .
literature
- George Baker Cummins : Rust Fungi on Legumes and Composites in North America . University of Arizona Press, Tucson 1978, ISBN 0-8165-0653-1 .