Name and publication

Phytophthora uliginosa T. Jung & E.M. Hansen (2002)

Jung T, Hansen EM, Winton L, Osswald W, and Delatour C. 2002. Three new species of Phytophthora from European oak forests. Mycological Research 106: 397–411.

Corresponding author: jung@bot.forst.tu-muenchen.de

Nomenclature

Mycobank

MB484597

Etymology

refers to the species' habitat in poorly drained soils

Typification

Type: POLAND, collected from the rhizosphere of oak (Quercus robur), by Thomas Jung in Niepolomice, May 1998; type: IFB-ULI 1-Niep 8 deposited at the Institute of Forest Botany / Forest Pathology, Technische Universität München, Germany

Ex-type: CBS 109054

Sequences for ex-type in original manuscript: IFB-ULI 1 = AF449495 ITS rDNA

Ex-type in other collections

(ET) CBS 109054, WPC P10413, S&T BL 59 (Abad), 62A3 (Hong)

Molecular identification

Voucher sequences for barcoding genes (ITS rDNA and COI) of the ex-type (see Molecular protocols page)

Phytophthora uliginosa isolate CPHST BL 59 (= P10413 WPC) = ITS rDNA MG865597, COI MH136988

Voucher sequences for Molecular Toolbox with seven genes (ITS, β-tub, COI, EF1α, HSP90, L10, and YPT1

(see Molecular protocols page) (In Progress)

Voucher sequences for Metabarcoding High-throughput Sequencing (HTS) Technologies [Molecular Operational Taxonomic Unit (MOTU)]

(see Molecular protocols page) (In Progress)

Sequences with multiple genes for ex-type in other sources

• NCBI: Phytophthora uliginosa CPHST BL 59 
• NCBI:  Phytophthora uliginosa P10413
• EPPO-Q-bank: Phytophthora uliginosa CBS 109054
• BOLDSYSTEMS: Phytophthora uliginosa PHYTO048-10 [COI-5P:680, ITS:832] = P10413 (WPC) (barcoding COI & ITS)

Position in multigenic phylogeny with 7 genes (ITS, β-tub, COI, EF1α, HSP90, L10, and YPT1)

Clade clade:
a taxonomic group of organisms classified together on the basis of homologous features traced to a common ancestor
7a

Morphological identification

adapted from Jung et al. (2002)

Colonies and cardinal temperatures

Colony colony:
assemblage of hyphae which usually develops form a single source and grows in a coordinated way
morphology on CMA, V8A, and MEA is uniform without any growth pattern, and with almost no growth on PDA. Optimum temperature 18°C, maximum 29°C.

Asexual phase

Sporangia nonpapillate; persistentpersistent:
pertaining to sporangia that remain attached to the sporangiophore and do not separate or detach easily (cf. caducous)
; broad-ellipsoid or obpyriformobpyriform:
inversely pear-shaped, i.e. with the widest part at the point of attachment (cf. pyriform)
, sometimes with an undulating wall or a conspicuous basal plugbasal plug:
a plug protruding into a sporangium from the basal cross wall, separating it from the sporangiophore
(av. 43–55 µm length x 26–34 µm width); showing external, internal, or nested proliferationnested proliferation:
a type of internal proliferation where a new sporangium develops successively inside the old sporangium after it has emptied
; formed on loosely branched sporangiophores. Hyphal swellings irregular, common, and produced in clusters. Chlamydospores absent.

Sexual phase

Homothallic. Oogonia smooth-walled (42–46 µm diam); antheridia paragynous, and attached near the stalk; oosporesoospores:
zygote or thick-walled spore that forms within the oogonium after fertilization by the antheridium; may be long-lived
pleroticplerotic:
pertaining to an oospore that fills the oogonium (cf. aplerotic)
and apleroticaplerotic:
pertaining to a mature oospore that does not fill the oogonium; i.e. there is room left between the oospore wall and oogonium wall (cf. plerotic)
(38–40 µm diam.).

​Additional specimen(s) evaluated

Phytophthora uliginosa ex-type CPHST BL 59, duplicate of P10413 (World Phytophthora Collection)

Hosts and distribution

Distribution: Europe (Poland, Germany)
Substrate: soil (rhizosphere)
Disease Note: aggressive root rot and dieback of oaks; associated with oak decline
Host: Quercus robur, Quercus petraea (Fagaceae)

Retrieved February 01, 2018 from U.S. National Fungus Collections Nomenclature Database.

Additional references and links

 

• SMML USDA-ARS: Phytophthora uliginosa
• EPPO Global Database: Phytophthora uliginosa
• Forest Phytophthoras of the world: Phytophthora uliginosa
• CABI Digital Library: Phytophthora uliginosa
• Encyclopedia of Life (EOL): Phytophthora uliginosa
• Index Fungorum (IF): Phytophthora uliginosa

 

• Google All Phytophthora uliginosa
• Google Images Phytophthora uliginosa
• Google Scholar Phytophthora uliginosa

Fact sheet author

Z. Gloria Abad, Ph.D., USDA-APHIS-PPQ-S&T Plant Pathogen Confirmatory Diagnostics Laboratory (PPCDL), United States of America.