Puccinia cacabata

Puccinia cacabata is a Ständerpilzart from the order of rust fungi ( Pucciniales ). The fungus is an endoparasite of cotton and various grasses. Symptoms of infestation by the way are rust spots and pustules on the leaf surfaces of host plants. She comes from southern North America to South America before.

Features

Macroscopic characteristics

Puccinia cacabata with the naked eye can be seen only on the basis of the projected on the surface of the host spore deposits. They grow in clusters that appear as yellowish to brown spots and pustules on the leaf surfaces.

Microscopic features

The mycelium of Puccinia cacabata grows intercellular as with all Puccinia species and forms Saugfäden that grow in the storage tissues of the host. The Aecien the type having 24-30 × 19-23 microns large, spherical or ellipsoidal, hyaline Aeciosporen with wrinkled surface. The zimtbraunen uredia kind of grow on both sides of the leaves of the host plants. Your also zimtbraunen uredospores are breitellipsoid to ovate, 21-27 × 20-24 microns in size and finely stachelwarzig. Growing on stems and leaves on both sides Telien the type are black brown and soon uncovered. The hazel teliospores of the fungus are two-celled, oblong to breitellipsoid generally and 34-40 × 20-24 microns in size. Your handle is colorless and up to 90 microns long.

Dissemination

The known distribution area of Puccinia cacabata ranges from the southwestern United States through the Bahamas to Bolivia and Argentina.

Ecology

The host plants of Puccinia cacabata are for the haploid cotton (Gossypium spp. ) And Bouteloua, Chloris Cathesticum and various types for the dikaryotic. The fungus feeds on the present in storage tissues of the plant nutrients, its spores bearing later break through the leaf surface, and put spores free. The type has a development cycle with Telien, uredia, spermogonia and Aecien and does a landlord change through.