Phytophthora lateralis

Chamaecyparis_lawsoniana_Phytophthora

Phytophthora lateralis

Phytophthora lateralis is a plant pathogen that causes root rot in various tree species. It is a species of the genus Phytophthora, which includes many destructive plant pathogens. P. lateralis specifically targets trees in the family Cupressaceae, such as Chamaecyparis lawsoniana (Port Orford cedar) and Thuja plicata (western red cedar).

Description

Phytophthora lateralis is a water mold that thrives in moist environments. It infects tree roots, causing rot and ultimately leading to tree death. The pathogen spreads through water, soil, and infected plant material, making it a significant threat to tree populations in affected areas.

Symptoms

Infected trees typically exhibit symptoms such as wilting, yellowing of foliage, and dieback of branches. Root rot caused by Phytophthora lateralis can weaken the tree's root system, making it more susceptible to windthrow and other environmental stressors.

Management

Preventative measures such as proper sanitation practices and avoiding the movement of infected plant material can help reduce the spread of Phytophthora lateralis. Fungicides may also be used to manage the disease, although their effectiveness can vary.

Impact

Phytophthora lateralis has had significant impacts on tree populations in regions where it is present. Efforts to control and manage the spread of this pathogen are ongoing to protect vulnerable tree species from further devastation.

See also

• Phytophthora
• Cupressaceae
• Chamaecyparis lawsoniana
• Thuja plicata