Phytophthora moyootj

Name and publication

Phytophthora moyootj Burgess (2014)

Burgess TI and Stukely MJC. 2014. Phytophthora moyootj Persoonia 33: 278–279. In Crous P, et al. 2014. Fungal Planet description sheets: 281–319. Persoonia 33: 212–289. 

Corresponding author:


from Burgess and Stukely (2014)




named for the swamp or wetlands from which isolates were recovered (moyootj = swamp country in the local Aboriginal Nyoongar language)


Type: AUSTRALIA, Western Australia, Walpole, mud from vehicle, 2012, collected by Department of Parks and Wildlife MURU 469 (dried culture on V8A, Herbarium of Murdoch University, Western Australia)

Ex-type: CBS 138759 = VHS 27218

Sequences for ex-type in original manuscript: VHS 27218: ITS rDNA KJ372256, β-tubulin KJ372303, HSP90 KJ396730, coxI s KJ396702, NADH KJ396681, LSU KP004501

Ex-type in other collections

CBS 138759 = VHS 27218 = CPHST BL 182 (Abad)

Molecular identification

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

Phytophthora moyootj isolate VHS 27218 ITS rDNA KJ372256

Phytophthora moyootj isolate CPHST BL 182 COI MH477750

Sequences for ex-type in other sources
Position in ITS phylogenetic tree

Clade 6b

Morphological identification

Colonies and cardinal temperatures

Colony morphology is stellate on V8A, CA, and MEA, and irregular and dense-felty on PDA. Minimum growth temperature 10°C, optimum 25–30°C, and maximum 32.5°C.

Conditions for growth and sporulation

Sporangia are produced in water cultures (soil extract or river water) and not observed in solid media. Oogonia are not observed in single culture or when paired with tester strains.

Asexual phase

Sporangia are nonpapillate, persistent, ovoid to broad ovoid or limoniform with average dimensions of 39.6 ± 10.8 x 26.5 ± 4.2 µm (overall range 18–73.3 x 18.3–38.4 µm). Sporangiophores are usually simple, and internal proliferation, both nested and extended, occurs in chains. Hyphal swellings absent; Chlamydospores absent.

Sexual phase

Sterile in culture.

Most typical characters

Phytophthora moyootj is in a species cluster with Phytophthora amnicola, Phytophthora fluvialis, Phytophthora litoralis, and Phytophthora thermophila, all recovered from waterways in Western Australia. Although these species have very similar morphology, P. moyootj is the only one to not produce hyphal swellings or chlamydospores.

Specimen(s) evaluated

Australia, Western Australia, Walpole, mud from vehicle, 2012, collected by Department of Parks and Wildlife, CBS 138759 = VHS27218; Fitzgerald River National Park, baited from soil, 2006, VHS16108; Jarrahdale, restored pit at mine site, 2012, collected by D. Hüberli, DH103

Hosts and distribution

Distribution: Australia
Substrate: isolated from soil
Host: no known host

Retrieved January 31, 2018 from U.S. National Fungus Collections Nomenclature Database.

Additional info:
Western Australia
Substrate: soil and water
Disease note: no pathogenicity trials have been conducted
Hosts: occasionally isolated in associated with other Phytophthora species in rhizosphaere soil collected in wetter areas

Additional references and links

  • Phytophthora DATABASE: Phytophthora moyootj
  • EPPO-Q-bank: Phytophthora moyootj
  • SMML USDA-ARS: Phytophthora moyootj
  • EPPO Global Database: Not available
  • CABI Invasive Species Compendium: Phytophthora moyootj
  • Encyclopedia of Life (EOL): Phytophthora moyootj
  • Index Fungorum (IF): Phytophthora moyootj
  • Plantwise Knowledge Bank: Phytophthora moyootj

Fact sheet authors

Treena Burgess, Ph.D., Centre for Phytophthora Science and Management, School of Biological Sciences and Biotechnology, Murdoch University, Australia; Z. Gloria Abad, Ph.D., USDA-APHIS-PPQ-S&T Beltsville Laboratory, United States of America