Characteristics Of Phytophthora ü Phytophthora is a genus of plant-damaging oomycetes, whose member species are capable of causing enormous economic losses on crops worldwide, as well as environmental damage in natural ecosystems. ü The cell wall of Phytophthora is made up of cellulose. ü Phytophthora species resemble true fungi because they grow by the means of fine filaments, called hyphae, and produce spores. ü Their hyphae lack cross-walls, and the diploid phase, rather than the haploid phase, dominates their life cycle. ü Another striking feature of Phytophthora is that it produces swimming spores, called zoospores, during a phase of its lifecycle, a vestige of its evolutionary origins in water. Important species ü There are currently more than 80 described species of Phytophthora worldwide, and the vast majority of them are plant pathogens. ü Phytophthora species damage plants by killing tissues. ü The symptom of foliar infection...
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