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Phytophthora belongs to the kingdom Straminipila and the class Oomycetes. This diverse genus comprises more than 150 recognized species, each with unique genetic, morphological, and ecological characteristics. Phylogenetic analysis has further divided into ten clades, offering insights into their evolutionary history and genetic diversity. Phytophthora species exhibit a global distribution, with some being cosmopolitan and others limited to specific regions. Temperature, humidity, and the availability of host plants all impact their prevalence. Phytophthora species are present on all continents except Antarctica, resulting in substantial losses in the agricultural sector, horticulture, and forestry. Phytophthora species are known for their pathogenicity, causing diseases in a various plants, including crops grown in agriculture, ornamental plants, and trees in forests. They are responsible for diseases such as late blight in potatoes, sudden oak death in trees, and root rot in soybeans, caused by P. infestans, P. ramorum, and P. sojae, respectively. Phytophthora’s pathogenicity is attributed by its potential to release sporangia and zoospores, which can infect plant tissues by various means, leading to wilting, rotting, and eventual plant death. The isolation of Phytophthora involves collecting plant material displaying symptoms, followed by tissue culturing, baiting, or soil sampling. Molecular techniques, which include PCR (polymerase chain reaction) and genome sequencing, are frequently used for the reliable detection of species. Morphological traits such as sporangial and zoospore structure, play a crucial role in preliminary identification. Phytophthora disease management includes a variety of strategies, such as cultural practices, chemical and biological control, and breeding for host resistance. However, the adaptability and persistence of Phytophthora species makes management challenging. Integrated approaches that combine multiple strategies are often the most effective in controlling these pathogens while minimizing their environmental impact.

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Phytophthora

  • 章节

  • 发表日期：

    2025年

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  • Manju Chaithra,
  • K. V. Shivakumar,
  • H. S. Mahesha,
  • Anusha M. Nayak

摘要

Phytophthora belongs to the kingdom Straminipila and the class Oomycetes. This diverse genus comprises more than 150 recognized species, each with unique genetic, morphological, and ecological characteristics. Phylogenetic analysis has further divided into ten clades, offering insights into their evolutionary history and genetic diversity. Phytophthora species exhibit a global distribution, with some being cosmopolitan and others limited to specific regions. Temperature, humidity, and the availability of host plants all impact their prevalence. Phytophthora species are present on all continents except Antarctica, resulting in substantial losses in the agricultural sector, horticulture, and forestry. Phytophthora species are known for their pathogenicity, causing diseases in a various plants, including crops grown in agriculture, ornamental plants, and trees in forests. They are responsible for diseases such as late blight in potatoes, sudden oak death in trees, and root rot in soybeans, caused by P. infestans, P. ramorum, and P. sojae, respectively. Phytophthora’s pathogenicity is attributed by its potential to release sporangia and zoospores, which can infect plant tissues by various means, leading to wilting, rotting, and eventual plant death. The isolation of Phytophthora involves collecting plant material displaying symptoms, followed by tissue culturing, baiting, or soil sampling. Molecular techniques, which include PCR (polymerase chain reaction) and genome sequencing, are frequently used for the reliable detection of species. Morphological traits such as sporangial and zoospore structure, play a crucial role in preliminary identification. Phytophthora disease management includes a variety of strategies, such as cultural practices, chemical and biological control, and breeding for host resistance. However, the adaptability and persistence of Phytophthora species makes management challenging. Integrated approaches that combine multiple strategies are often the most effective in controlling these pathogens while minimizing their environmental impact.