Phytophthora psychrophila
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''Phytophthora psychrophila'' is a semi-papillate plant pathogen that mainly infects
European oak ''Quercus robur'', commonly known as common oak, pedunculate oak, European oak or English oak, is a species of flowering plant in the beech and oak family, Fagaceae. It is a large tree, native to most of Europe west of the Caucasus. It is widely ...
. It differs from other species of the genus (like '' P. ilicis'') by its sympodially branched primary
hypha A hypha (; ) is a long, branching, filamentous structure of a fungus, oomycete, or actinobacterium. In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium. Structure A hypha consists of one or ...
e, the high variation in size and shape of the sporangia and shorter
pedicel Pedicle or pedicel may refer to: Human anatomy *Pedicle of vertebral arch, the segment between the transverse process and the vertebral body, and is often used as a radiographic marker and entry point in vertebroplasty and kyphoplasty procedures ...
s.


References


Further reading

* * * psychrophila Water mould plant pathogens and diseases Tree diseases Protists described in 2002 {{plant-disease-stub