Aecidium ampliatum

from Wikipedia, the free encyclopedia
Aecidium ampliatum
Systematics
Subdivision : Pucciniomycotina
Class : Pucciniomycetes
Order : Rust mushrooms (Pucciniales)
Family : insecure position (incertae sedis)
Genre : Aecidium
Type : Aecidium ampliatum
Scientific name
Aecidium ampliatum
HS Jacks. & Holw.

Aecidium ampliatum is a stand fungal art from the order of the rust fungi (Pucciniales). The fungus is an endoparasite of an undetermined water foul . Symptoms of the infestation by the species are rust spots and pustules on the leaf surfaces of the host plants. It is common in Guatemala and Costa Rica . Since only its secondary crop form is knownso far, it is classified in the genus Aecidium .

features

Macroscopic features

Aecidium ampliatum 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 Aecidium ampliatum grows as with all Aecidium TYPES intercellular and forms Saugfäden that grow into the storage tissue of the host. Its spermogonia grow on both sides of the host leaves. The aecia of the species on the underside of the leaves are cup-shaped and white to light yellow. Their hyaline aecidiospores are 27–30 × 23–27 µm in size, spherical to broadly ellipsoidal and warty. The uredia of the mushroom are not known, and it is possible that they are not developed. The Telien the type have not been observed to date.

distribution

The known distribution area of Aecidium ampliatum includes Guatemala and Costa Rica .

ecology

The host plant of Aecidium ampliatum is an unspecified water deast ( Eupatorium sp.). 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 micro- or 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