Phytophthora gondwanensis

Name and publication

Phytophthora gondwanensis Shuttleworth, Scarlett, Daniel & Guest (2016)

Shuttleworth LA, Scarlett K, Daniel R, and Guest DI. 2016. Phytophthora gondwanensis. Persoonia 35: 298–299. In Crous P, et al. 2015. Fungal Planet description sheets: 371–399. Persoonia 35: 264–327.

Nomenclature

from Shuttleworth et al. (2016)

Mycobank

MB812576

Etymology

refers to Gondwana Rainforests of Australia World Heritage Area where this species was collected

Typification

Type: AUSTRALIA, New South Wales, Oxley Wild Rivers National Park, collected from soil, coll. L.A. Shuttleworth & B.L. Freedman, 28 Nov. 2011, isol. K. Scarlett, Mar. 2014 (holotype a dried 10% V8 agar disc CBS H-22283)

Ex-type: W1858 = CBS 139336 = CMW 42633

Sequences for ex-type in original manuscript: Phytophthora sp. gondwanense isolate W1858 = ITSrDNA KP070695, β-tub KP070605coxII KP070638

Ex-type in other collections

W1858 = CBS 139336 = CMW 42633

Molecular identification

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

Phytophthora gondwanensis isolate W1858 ITS rDNA KP070695 as Phytophthora sp. gondwanense isolate W1858

Sequences for ex-type in other sources
  • NCBI: Phytophthora sp. gondwanense W1858
  • Phytophthora DATABASE: Phytophthora gondwanensis
  • EPPO-Q-bank: Phytophthora gondwanensis
  • BOLDSYSTEMS: Phytophthora gondwanensis
Position in phylogenetic tree

Clade 10b

Morphological identification

adapted from Shuttleworth et al. (2016)

Colonies and cardinal temperatures

Colony morphology after 7 days of growth on V8 agar, potato-dextrose agar, and malt extract with no distinct pattern. Minimum temperature for growth is 5 °C, optimum 25–30 °C, and maximum 32 °C.

Conditions for growth and sporulation

Sporangia initially abundant after isolation from soil, and on 10% V8 agar after 5 days, oogonia abundant on V8 after 5 days.

Asexual phase

Sporangia papillate; caducous with short pedicel; globose, ovoid, limoniform, obturbinate, obpyriform (26–57 μm L × 22–39 μm W); originated in simple sympodial sporangiophores. Hyphal swellings absent. Chlamydospores absent.

Sexual phase

Homothallic. Oogonia globose, smooth-walled; antheridia amphigynous (10–20 μm diam.); oospores plerotic (24–32 μm diam.).

Most typical characters

Morphologically, P. gondwanensis has smaller sporangial dimensions and smaller antheridia than Phytophthora boehmeriae.

Hosts and distribution

Distribution: Australia
Substrate: isolated from soil

Retrieved January 30, 2018 from U.S. National Fungus Collections Nomenclature Database.

Additional references and links

  • Phytophthora DATABASE: Phytophthora gondwanensis
  • EPPO-Q-bank: Phytophthora gondwanensis
  • SMML USDA-ARS: Phytophthora gondwanensis
  • EPPO Global Database: Phytophthora gondwanensis 
  • CABI Invasive Species Compendium: Phytophthora gondwanensis
  • Encyclopedia of Life (EOL): Phytophthora gondwanensis
  • Index Fungorum (IF): Phytophthora gondwanensis
  • Plantwise Knowledge Bank: Phytophthora gondwanensis

Fact sheet author

Z. Gloria Abad, Ph.D., USDA-APHIS-PPQ-S&T Beltsville Laboratory, United States of America