Name and publication
Phytophthora subarctica T. Jung, T. Corcobado, J. Oliva & I. Milenković (2022)
Jung T, Milenković I, Corcobado T. et al. 2022. Extensive morphological and behavioural diversity among fourteen new and seven described species in Phytophthora Clade 10 and its evolutionary implications. Persoonia-Molecular Phylogeny and Evolution of Fungi 49: 1–57.
Name refers to the origin of all known isolates from the subarctic zone in northern Sweden.
Type: Sweden, Kiruna area, isolated from riverbank soil, Sept. 2017, I. Milenković & T. Corcobado, holotype HNHM-MYC- 020632, dried culture on V8A, Herbarium of the Hungarian Natural History Museum, Budapest, Hungary
Ex-type: CBS 148850 = NRRL 64339 = SW176
Sequences for ex-type in original manuscript: LSU ON000696, ITS ON000790, β-tubulin OM975969, hsp90 OM976486, tigA OM974663, rpl10 OM97523, tef-1a OM984949, enolase OM976580, cox1 ON013856, ypt1 ON025006, nadh1 OM976965, rps10 OM976724
Position in ITS phylogenetic tree
Colonies and cardinal temperatures
Colony morphology submerged and radiate on V8A and CA, and stoloniferous and dense felty with very slow growth on PDA. Optimum growth temperature 20°C and maximum 30°C.
Conditions for growth and sporulation
Sporangia were nonpapillate, persistent, and predominantly ovoid to elongated ovoid in shape. Sporangia averaged 53.8 x 31.6 µm (overall range 32.7–127.6 x 16.3–39.5 µm), proliferation internal, nested, and extended; Sporangiophores unbranched or rarely on lax sympodia. Hyphal swellings rare. Chlamydospores absent.
Sterile in culture.
Most typical characters
Additional specimen(s) evaluated
Sweden, Kiruna area, isolated from forest stream, Sept. 2017, I. Milenković & T. Corcobado, SW639, SW640, SW641
Hosts and distribution
Substrate: forest stream
Disease note: no known disease
Host: no known host
Additional references and links
Fact sheet author
Treena Burgess, Ph.D., Phytophthora Science and Management, Harry Butler Institute, Murdoch University