Name and publication
Phytophthora multivesiculata Ilieva, Man in ‘t Veld, Veenbaas-Rijks & Pieters (1998)
Ilieva E, Man in 't Veld WA, Veenbaas-Rijks W, and Pieters R. 1998. Phytophthora multivesiculata, a new species causing rot in Cymbidium. Eur. J. Plant Pathol. 104: 677–684.
from Ilieva et al. (1998)
Type: NETHERLANDS, Mijdrecht, isolated from leaves of Cymbidium on November, 1995, dry culture CBS 6034 deposited in herbarium Centraalbureau voor Schimmelcultures, Baarn, the Netherlands
Ex-type: CBS 545.96
Ex-type in other collections
Voucher sequences for barcoding genes (ITS rDNA and COI) of the ex-type (see Molecular protocols page)
Sequences for ex-type in other sources
- NCBI: Phytophthora multivesiculata CPHST BL 50G
- NCBI: Phytophthora multivesiculata P10410
- NCBI: Phytophthora multivesiculata CBS 545.96
- NCBI: Phytophthora multivesiculata CBS545.96
- Phytophthora DATABASE: Phytophthora multivesiculata PD-00001 (= P10410)
- EPPO-Q-bank: Phytophthora multivesiculata CBS 545.96 (= PD 95/8679)
- BOLDSYSTEMS: Phytophthora multivesiculata OOMYA 180-07 [COI-5P:680, ITS:803] = CBS 545.96; OOMYA 533-08 [ITS:2284] = CBS 545.96 (barcoding COI & ITS)
Position in ITS phylogenetic tree
Colonies and cardinal temperatures
Colony morphology after 7 days of growth on V8 agar, potato dextrose agar, and malt extract with no distinct pattern to slightly radiate. Minimum temperature for growth is 6°C, optimum 21–27°C, and maximum 30°C.
Sporangia nonpapillate, rarely with two apices; persistent; ovoid, obpyriform occasionally with tapered base (30–60 L x 20–41 W μm); sporangia showing internal and external proliferation and produced singly on long, slender, mainly twisted sporangiophores or in sympodial arrangement of 2 or 3 sporangia; some sporangia laterally attached to sporangiophore. Hyphal swellings globose and catenulate. Chlamydospores absent.
Homothallic. Oogonia smooth-walled (28–50 μm diam.); antheridia predominantly amphigynous, irregularly spherical or ellipsoidal, sometimes with digitated projections; oospores plerotic or slightly aplerotic (24–42 μm diam.).
- Original publication refers to the presence of semipapillate and nonpapillate sporangia. In our observations of the ex-type P10410, only nonpapillate sporangia have been observed.
- Original manuscript refers to oospores mostly aplerotic. Oospores of specimen P10410 are plerotic or slightly aplerotic.
Most typical characters
Hosts and distribution
Distribution: Australia, Europe (the Netherlands, type)
Substrate: leaves, stems, base of bulbs
Disease note: leaf and stem rot, bulb rot
Host: Cymbidium sp. (Orchidaceae)
Retrieved January 31, 2018 from U.S. National Fungus Collections Nomenclature Database.
USA: This species was listed as a species of concern during the 2009 Phytophthora prioritization project conducted by USDA APHIS PPQ CPHST PERAL (Schwartzburg et al.).
Additional references and links
- Phytophthora DATABASE: Phytophthora multivesiculata
- EPPO-Q-bank: Phytophthora multivesiculata
- SMML USDA-ARS: Phytophthora multivesiculata
- EPPO Global Database: Phytophthora multivesiculata
- CABI Invasive Species Compendium: Phytophthora multivesiculata
- Encyclopedia of Life (EOL): Phytophthora multivesiculata
- Index Fungorum (IF): Phytophthora multivesiculata
- Plantwise Knowledge Bank: Phytophthora multivesiculata
- Google All Phytophthora multivesiculata
- Google Images Phytophthora multivesiculata
- Google Scholar Phytophthora multivesiculata
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