Uredo hoffmanseggiae

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Uredo hoffmanseggiae
Systematics
Subdivision : Pucciniomycotina
Class : Pucciniomycetes
Order : Rust mushrooms (Pucciniales)
Family : insecure position (incertae sedis)
Genre : Uredo
Type : Uredo hoffmanseggiae
Scientific name
Uredo hoffmanseggiae
( Long ) Cummins

Uredo hoffmanseggiae is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of the legume Hoffmanseggia oxycarpa . 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 . Since only its secondary crop shape is knownso far, it is classified in the genus Uredo .

features

Macroscopic features

Uredo hoffmanseggiae can only be recognized with the naked eye by 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 Uredo hoffmanseggiae grows as with all Uredo TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. The spermogonia and aecia of the species are not known. The uredia of the fungus growing on the underside of the host leaves are chocolate brown and have paraphyses . Their approximately chestnut brown uredospores are 26–31 × 17–20 µm in size, ovate to ellipsoidal and spiky. The parts of the species are unknown.

distribution

The known distribution area of Uredo hoffmanseggiae only includes Texas .

ecology

The host plant of Uredo hoffmanseggiae is Hoffmanseggia oxycarpa . 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 presumably macrocyclical development cycle with Spermogonia, Aecien, Uredien and Telien. Due to the lack of aecia and spermogonia, it is not possible to determine whether it changes host .

literature