Helicobasidium purpureum
Helicobasidium purpureum is a species of fungus in the family Helicobasidiaceae. It is known for its distinctive purple coloration and its role as a plant pathogen, particularly affecting the roots of various plants.
Taxonomy[edit | edit source]
Helicobasidium purpureum belongs to the kingdom Fungi, phylum Basidiomycota, class Agaricomycetes, order Helicobasidiales, and family Helicobasidiaceae. The genus Helicobasidium includes several species, but H. purpureum is one of the most well-studied due to its agricultural impact.
Morphology[edit | edit source]
The fungus is characterized by its purple mycelium, which can be observed on infected plant roots. The mycelium is typically filamentous and forms a dense network. The basidia, which are the spore-producing structures, are helicoid in shape, a feature that is distinctive to the genus Helicobasidium.
Life Cycle[edit | edit source]
Helicobasidium purpureum has a complex life cycle that includes both sexual and asexual reproduction. The sexual stage involves the formation of basidiospores on the basidia, while the asexual stage involves the production of conidia. The fungus can survive in soil as sclerotia, which are hardened masses of mycelium that can withstand adverse conditions.
Pathogenicity[edit | edit source]
Helicobasidium purpureum is a known pathogen of several plant species, including grapevines, potatoes, and various ornamental plants. The fungus infects the roots, leading to root rot and, in severe cases, plant death. Symptoms of infection include wilting, yellowing of leaves, and stunted growth.
Control and Management[edit | edit source]
Managing Helicobasidium purpureum involves a combination of cultural practices, chemical treatments, and biological control. Crop rotation and the use of resistant plant varieties can help reduce the incidence of infection. Fungicides may be applied to control the spread of the fungus, although their effectiveness can vary. Biological control agents, such as antagonistic fungi and bacteria, are also being explored as potential management strategies.
Related Pages[edit | edit source]
References[edit | edit source]
External Links[edit | edit source]
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Contributors: Prab R. Tumpati, MD