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The best-known types are brown rot, soft rot, and white rot. [ 4 ] [ 5 ] Each produce different enzymes, can degrade different plant materials, and can colonise different environmental niches. [ 6 ] Brown rot and soft rot both digest a tree's cellulose and hemicellulose but not its lignin; white rot digests lignin as well.
In trees, heart rot is a fungal disease that causes the decay of wood at the center of the trunk and branches. Fungi enter the tree through wounds in the bark and decay the heartwood . The diseased heartwood softens, making trees structurally weaker and prone to breakage.
Phytophthora quercina is a papillate homothallic soil-borne plant pathogen causing root rot of oak tree species in Europe. [1] It is associated with necrotic fine roots. [2]In culture, this species shows a uniform, dome-shaped and cottonwool-like colony growth pattern.
Quercus shumardii, the Shumard oak, spotted oak, Schneck oak, Shumard red oak, or swamp red oak, is one of the largest of the oak species in the red oak group (Quercus section Lobatae). It is closely related to Quercus buckleyi (Texas red oak), Quercus texana (Nuttall's red oak), and Quercus gravesii (Chisos red oak).
Laminated root rot also known as yellow ring rot is caused by the fungal pathogen Phellinus weirii. Laminated root rot is one of the most damaging root disease amongst conifers in northwestern America and true firs , Douglas fir , Mountain hemlock , and Western hemlock are highly susceptible to infection with P. weirii .
Root rot is a condition in which anoxic conditions in the soil or potting media around the roots of a plant cause them to rot. This occurs due to excessive standing water around the roots. [ 1 ] It is found in both indoor and outdoor plants, although it is more common in indoor plants due to overwatering, heavy potting media, or containers with ...
The pathogens that cause collar rot may be species or genera specific. But generalist pathogens such as Agroathelia rolfsii (aka Sclerotium rolfsii or Athelia rolfsii) are known to attack over 200 different species. [1] While bacteria caused collar rot is not common, trees infected with Fire blight (Erwinia amylovora) may develop collar rot. [2]
Inonotus dryadeus is a parasitic saprobic fungus, [1] with spores entering wounds on broadleaf trees (predominantly oak, although sometimes maple, elm and chestnut). [4] The fungus is primarily a root decay fungus, rotting the below−ground parts of roots. Detection is often difficult if the conks have not developed.