Puccinia pinaropappi

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Puccinia pinaropappi
Systematics
Subdivision : Pucciniomycotina
Class : Pucciniomycetes
Order : Rust mushrooms (Pucciniales)
Family : Pucciniaceae
Genre : Puccinia
Type : Puccinia pinaropappi
Scientific name
Puccinia pinaropappi
P. Syd & Syd

Puccinia pinaropappi is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the daisy family Pinaropappus roseus . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. She is endemic to Texas .

features

Macroscopic features

Puccinia pinaropappi 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 pinaropappi 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 both sides of the host leaves are cinnamon brown. Their light cinnamon brown to golden uredospores are 24–28 × 22–25  µm in size, spherical to broadly ellipsoidal and finely spiky. The bilateral growing parts of the species are black-brown, powdery and uncovered. The chestnut-brown teliospores are two-celled, usually ellipsoidal to broadly ellipsoidal, fine-black and mostly 32–38 × 24–28 µm in size. Their stem is colorless.

distribution

The known distribution area of Puccinia pinaropappi only includes Texas .

ecology

The host plant of Puccinia pinaropappi is Pinaropappus roseus . 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