sitruskankeri

Sitruskankeri, scientifically known as *Phytophthora citrophthora*, is a destructive oomycete pathogen that affects citrus plants. It is a water mold, often referred to as a "water mold" rather than a true fungus, although it shares some characteristics. This pathogen is widespread in citrus-growing regions globally and is responsible for significant economic losses in the citrus industry.

The disease caused by *Phytophthora citrophthora* manifests in several ways. It commonly causes gummosis, a disease characterized by the oozing of gummy resin from the bark of infected trees, particularly on the lower trunk and collar. This can lead to girdling and eventual death of the tree. It also causes root rot, where the pathogen infects the root system, impairing water and nutrient uptake, leading to wilting, yellowing leaves, and reduced fruit production. Furthermore, it can cause post-harvest fruit rot, particularly in fruit that is in contact with infested soil or water, leading to a soft, rotten appearance and a distinctive smell.

Environmental conditions that favor the spread of *Phytophthora citrophthora* include warm, wet conditions, such as heavy rainfall or overhead irrigation. The pathogen's spores are motile and can be easily spread by water, soil, tools, and infected planting material. Management strategies focus on prevention, including selecting disease-free planting material, improving orchard drainage, avoiding over-irrigation, and using resistant rootstocks. Chemical control measures, such as the application of fungicides, can also be employed to manage outbreaks.