Uromyces bidentis

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Uromyces bidentis
Systematics
Subdivision : Pucciniomycotina
Class : Pucciniomycetes
Order : Rust mushrooms (Pucciniales)
Family : Pucciniaceae
Genre : Uromyces
Type : Uromyces bidentis
Scientific name
Uromyces bidentis
Warehouse

Uromyces bidentis is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of two teeth . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in tropical and subtropical America.

features

Macroscopic features

Uromyces bidentis 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 Uromyces bidentis grows as with all Uromyces TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The spermogonia and aecia of the species are unknown. The same applies to their uredia , they may not be trained. The parts of the species growing on the underside of the surfaces of the host leaves are dark cinnamon brown, densely grouped, compact and uncovered. The light cinnamon to golden brown teliospores are unicellular, usually ellipsoidal, warty and mostly 32–40 × 17–20 µm in size. Their stem is brownish and up to 65 µm long.

distribution

The known distribution area of Uromyces bidentis extends from South America to Florida .

ecology

The host plants of Uromyces bidentis are various two teeth ( Bidens 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 probably microcyclical development cycle , of which only the telia and their host are known so far. It cannot therefore be said whether she will change host .

literature