Phytophthora parsiana

Name and publication

Phytophthora parsiana Mostowfizadeh, Cooke & Banihashemi (2008)

Mostowfizadeh-Ghalamfarsa R, Cooke DEL, and Banihashemi Z. 2008. Phytophthora parsiana sp. nov., a new high-temperature tolerant species. Mycological Research 112: 783–794.

Corresponding author:


from Mostowfizadeh-Ghalamfarsa et al. (2008)




named after the Farsi name of Persia, the region from which it was first isolated and described


Type: IRAN, Bushehr Province, Shabankareh, isolated from crown of common fig (Ficus carica) by Z. Banihashemi in 1991, SUC25 (X-2-91); holotypus IMI 395329

Ex-type: SUC25

Sequences for ex-type in original manuscript: SUC25 (type) deposited as C25: ITS AY659739, β-tub AY659746, Ef-1a AY659753, Cox AY659759

Ex-type in other collections

SUC25 = P15164 (WOC/WPC), SCRP791 (Cooke), C25, CPHST BL 47 (Abad), 47C3 (Yang)

Molecular identification

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

Phytophthora parsiana isolate CPHST BL 47 (= P15164 WPC) = ITS rDNA MG865562, COI MH136952

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

Clade 9a

Morphological identification

adapted from Mostowfizadeh-Ghalamfarsa et al. (2008)

Colonies and cardinal temperatures

Colony morphology on V-8 agar, and potato dextrose agar with rosette pattern, and malt extract agar with no distinctive pattern. Minimum temperature for growth 9°C, optimum 24–30°C, maximum 33°C.

Asexual phase

Sporangia nonpapillate; persistent; ovoid, obpyriform, ellipsoid, some with irregular shapes, and some with tapered bases (36–77 L X 22–50 W µm); proliferating internally in simple and nested proliferation; originated in unbranched and rarely in simple sympodial sporangiophores. Hyphal swellings subglobose, elongate. Chlamydospores absent??.

Sexual phase

Heterothallic. Oogonia smooth-walled; antheridia amphigynous; oospores aplerotic.

Additional specimen(s) evaluated

Phytophthora parsiana ex-type CPHST BL 47, duplicate of P15164 (World Phytophthora Collection), which is a duplicate of the ex-type SUC25

Hosts and distribution

Distribution: widespread based on scattered reports
Substrate: soil around roots
Disease note: crown rot
Host: associated with diverse hardwoods

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

Additional info:
Substrate: trunk

Additional references and links

Fact sheet author

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