A New Soilborne Pathogen: Phytopythium vexans
DOI:
https://doi.org/10.24925/turjaf.v12i5.844-854.6666Keywords:
Phytopythium spp., Phytopythium vexans, Oomycetes, Pathogens , SoilborneAbstract
The genus Phytopythium is a group of soil-borne pathogens that were previously included under the genus Pythium, separated from the genus Pythium with the continuation of taxonomic studies, and today, different characteristics have been revealed compared to the genus Pythium and have only recently begun to be understood. The soil-borne organisms in the genus Phytopythium are closely related to Phytophthora and Pythium species and have similar morphological structure and biology. There are approximately 20 species in the genus Phytopythium and most species survive as saprophytic on host plants. Pathogenic species, on the other hand, are very dangerous and potentially threatening for host plants. Among these species, Phytopythium vexans draws attention. When the studies are analysed, it is seen that Pp. vexans causes serious damages on woody plants and ornamental plants as well as cultivated plants. The aim of this study is to introduce the general characteristics of the genus Phytopythium, to reveal the similarities and differences between the genus Phytophthora and Pythium, and to give detailed information about Pp. vexans, which is a pathogenic species in plants and has been found to be pathogenic in various plants in Turkey in recent years and its importance has been emphasised. In this review, in addition to general information about the genus Phytopythium, morphological characteristics of Pp. vexans, disease symptoms on host plants, methods used in its identification, studies carried out in the world and in Turkey and strategies for its control will be given. Thus, the potential threat posed by this soil-borne pathogen group in agricultural production will be discussed.
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