Name and publication
Phytophthora procera T. Jung, T. Corcobado, S. Raghuwinder & 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 slender shape of many sporangia (procera Lat. = slender).
Type: USA, Louisiana, Archie, isolated from a naturally fallen leaf in a flooded swamp forest. March 2020, T. Corcobado & T. Májek, holotype HNHM-MYC-009704, dried culture on V8A, Herbarium of the Hungarian Natural History Museum, Budapest, Hungary
Ex-type: culture CBS 149226 = NRRL 64144 = LU013
Sequences for ex-type in original manuscript: LSU ON000673, ITS ON000767, β-tubulin OM975946, hsp90 OM976463, tigA OM974640, rpl10 OM97500, tef-1a OM984926, cox1 ON013833, ypt1 ON024983, nadh1 OM976942, rps10 OM976701
Position in ITS phylogenetic tree
Colonies and cardinal temperatures
Colony morphology submerged and radiate on V8A, petaloid with limited aerial mycelium on CA, and dense-felty, rosaceous with submerged margins on PDA. Optimum growth temperature 25°C and maximum 32.5°C.
Conditions for growth and sporulation
Sporangia were nonpapillate, persistent, and predominantly ovoid to elongated ovoid and ellipsoid to elongated ellipsoid in shape. Sporangia averaged 60.2 x 25.2 µm (overall range 29.1–92.6 x 12.7–33.5 µm), proliferation internal nested and extended. Sporangiophores unbranched. Hyphae undulating; hyphal swellings rare. Chlamydospores absent.
Sterile in culture.
Most typical characters
Resides in phylogenetic clade 10d, with two other species all recovered from fallen leaves in swamp forest, Louisiana, USA
Additional specimen(s) evaluated
USA, Louisiana, Archie, isolated from a naturally fallen leaf in a flooded swamp forest. March 2020, T. Corcobado & T. Májek, LU007, LU010, LU056.
Hosts and distribution
Substrate: fallen leaf
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