Phytophthora

Phytophthora is a genus of plant-damaging oomycetes (water molds), whose member species are capable of causing enormous economic losses on crops worldwide, as well as environmental damage in natural ecosystems. The name Phytophthora, literally meaning "plant destroyer," comes from the Greek language.

Taxonomy[edit | edit source]

The group of oomycetes, to which Phytophthora belongs, were originally classified among the fungi, but research in the early 20th century revealed major differences, leading to their reclassification in the kingdom Chromista.

Species[edit | edit source]

There are approximately 100 recognized species of Phytophthora. Some of the most notable include Phytophthora infestans, which was responsible for the Great Irish Famine, and Phytophthora cinnamomi, a species known to damage almost 5,000 species of plants and cause disease in nearly 500 species, particularly in Australia.

Life cycle[edit | edit source]

Phytophthora species reproduce via spores. The spores, known as zoospores, are produced in a sporangium. The zoospores are motile via two flagella, allowing them to swim towards plant roots in soil water.

Disease control[edit | edit source]

Control of Phytophthora diseases involves a combination of tactics, with plant resistance being the most important. Other tactics include proper site selection, good water management, and the use of fungicides.

References[edit | edit source]

External links[edit | edit source]

Phytophthora Resources
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