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 Add this item to the list   Phytophthora cinnamomi
    

General information

 Organism group:Phytophthora 
 Taxonomic info on species (MycoBank):
 
 Representative strain(s):CBS 144.22 = ATCC 1407 = IMI 022938 
 Associated strain(s) in Q-bank:
 

Substrate and country information

 Substrates of included strains:Ananas comosus (Bromeliaceae); Camellia japonica (Theaceae); Chamaecyparis lawsoniana var. alumii (Cupressaceae); Cinchona ledgeriana (Rubiaceae); Cineraria sp. (Compositae); Cinnamomum burmannii (Lauraceae); Citrus sp. (Rutaceae); Persea americana (Lauraceae); Persea gratissima (Lauraceae); Pinus echinata (Pinaceae); Rhododendron sp. (Ericaceae); Unknown 
 Countries of included strains:France; Indonesia; Netherlands; Peru; United States of America; Unknown 
 
Other reported substrates and countries
 
Kingdom Planta
 Plant host genus:Cinchona ledgeriana
Persea americana
persea gratissima
Camellia japonica
Pinus echinata
Ananas comosus
citrus
Chamaecyparis lawsoniana
Cineraria
Rhododendron
Cinnamomum
 
 
Symptoms on host plant:
antracnose no
canker no
dieback no
wilting no
 
leaf spot no
root rot yes
stem base rot no
   
 
 
Type of infection on plant:
Pathogenic yes
Opportunistic no
Saprophytic no
 
 
 
Other substrata

Quarantine information

 Has quarantine status?:No 
 EU status:
 
 EPPO status:
 
 EPPO (Bayer) code:PHYTCN 
 Q-species description sheet:
 
 Q-species distribution map:
 
 Q-species diagnostic protocol:
 
 Q-species photos:
 
 Diagnostic locus for identification in Q-bank:ITS nrDNA is sufficient 

Morphological data

 
Pictures
 Culture CMA after 7 days at 24 °C:
  • Phytophthora cinnamomi CBS 144.22 CMA after 7 days at 24 degrees
 
 Culture PDA after 7 days at 24 °C:
  • Phytophthora cinnamomi CBS 144.22 PDA after 7 days at 24 degrees
 
 Culture V8 after 7 days at 24 °C:
  • Phytophthora cinnamomi CBS 144.22 V8 after 7 days at 24 degrees
 
 Sporangia:
  • Phytophthora cinnamomi CBS 144.22 basal plug sporang1a 2 100x
  • Phytophthora cinnamomi CBS 144.22 internal proliferation 1 100x
  • Phytophthora cinnamomi CBS 144.22 internal proliferation 2 100x
  • Phytophthora cinnamomi CBS 144.22 internal proliferation 3 20x
  • Phytophthora cinnamomi CBS 144.22 sporangia 40x
  • Phytophthora cinnamomi CBS 144.22 sporangia obpyriform1 40x
 
 Sporangiophores:
  • Phytophthora cinnamomi CBS 144.22 internal proliferation 20x
 
 Oogonia & Antheridia:
  • Phytophthora cinnamomi CBS 144.22 oogonium single culture aborted 100x
  • Phytophthora cinnamomi CBS 144.22 oogonium single culture plerotic 100x
 
 Hyphal swellings:
  • Phytophthora cinnamomi CBS 144.22 globose hyphal swelling 1 100x
  • Phytophthora cinnamomi CBS 144.22 globose hyphal swellings 2 100x
  • Phytophthora cinnamomi CBS 144.22 globose hyphal swellings on knotted hyphae 100x
  • Phytophthora cinnamomi CBS 144.22 globose hyphal swellings on knotted hyphae 40x
  • Phytophthora cinnamomi CBS 144.22 hyphal swelling 40x
  • Phytophthora cinnamomi CBS 144.22 hyphal swelling dark 100x
  • Phytophthora cinnamomi CBS 144.22 hyphal swellings 1 100x
  • Phytophthora cinnamomi CBS 144.22 hyphal swellings 40x
  • Phytophthora cinnamomi CBS 144.22 hyphal swellings in water culture 40x
  • Phytophthora cinnamomi CBS 144.22 lateral hyphal swelling 100x
 
 Culture CMA after 7 days at 18 °C:
  • Phytophthora cinnamomi CBS 144.22 CMA after 7 days at 18 degrees
 
 Culture PDA after 7 days at 18 °C:
  • Phytophthora cinnamomi CBS 144.22 PDA after 7 days at 18 degrees
 
 Culture V8 after 7 days at 18 °C:
  • Phytophthora cinnamomi CBS 144.22 V8 after 7 days at 18 degrees
 
 
Characters in vitro
 
Sporangia in water culture
 
Shape of sporangia:
spherical/globose no
ellipsoid no
ovoid yes
obpyriform yes
obturbinate no
 
obovoid no
elongated neck/ beaked no
tapered base no
distorted shapes no
constricted ?
 
 Width of sporangia (µm):(34.14) 36.69 - 44.6 (44.91) 
 Average length/width ratio:(1.3) 1.4 - 2.1 (2.5) 
 Length of sporangia (µm):(52.09) 57.07 - 86.73 (104.76) 
 
Pore type of sporangia:
non-papillate yes
semi-papillate no
papillate no
 
 
 Discharge pore width:(7.86) 8.79 - 17.23 (20.95) 
 
Sporangial characteristics:
Are the sporangia caduceous? no
>1 apex/papilla no
Presence of hyphal projections (Oc) no
Collapse after dehiscence ?
 
Laterally displaced attachment of sporangiophore (Oc) no
Occurence of intercallary sporangia no
Basal plug conspicious no
   
 
 
Sporangiophores in water culture
 
Sporangiophores on agar:
compound sympodial sporangiophores no
sympodial branching on agar no
are sporangia present on agar?: no
 
 
 
Sporangiophores in water:
long, irregularly branched ?
umbellate no
internal proliferation yes
Sympodia yes
 
basal swellings yes
intercalary swellings no
clumps no
   
 
 
Antheridia on CMA medium
 Length of antheridia (µm):(12.61) 14.55 - 29.1 (30.07) 
 
Shape of antheridia:
short cylindrical variable
elongated cylindrical yes
spherical no
irregular no
 
rectangular no
ellipsoid or ovoid variable
club shaped no
   
 
 Width of antheridia (µm):(13.58) 16.61 - 21.24 (22.31) 
 
Type of antheridia:
amphigynous yes
paragynous no
 
 
 
Antheridial characteristics:
Can antheridia be diclinous? no
Do 2 celled antheridia occur? yes
Tangled or knotted hyphae around the antheridium no
 
Spine or digitate projections on antheridium no
Can oogonia have 2 or more antheridia no
Intercalary or subterminal antheridia? no
 
 
Oogonia on CMA medium
 Length of oogonia (µm):(24.25) 38.8 - 45.98 (48.5) 
 Width of oogonia (µm):(26.68) 39.77 - 45.69 (49.47) 
 Remarks on oogonia:Some isolates show limited self fertility.
Measurements are from single culture, CBS 144.22.
 
 
Oogonial characteristics:
Ornamentation no
Tapered base yes
Wall rough with age no
 
Oogonial stalk often excentric in antheridium variable
Clustered typically no
   
 
 
Oospores on CMA medium
 Width of oospores (µm):(39.58) 39.73 - 44.24 (44.8) 
 Wall thickness of oospores (µm):0 - 1.4 (1.94) 
 Length of oospores (µm):(39.58) 39.73 - 44.24 (44.8) 
 
Oospores plerotic or aplerotic?:
Plerotic yes
Aplerotic no
Slightly aplerotic no
 
 
 
Chlamydospores in water culture or on CMA medium
 Chlamydospores presence:absent 
 
Hyphal swellings in water culture
 
Shape of hyphal swellings:
Globose yes
radiating hyphae ?
Subglobose yes
 
Flask- or Bottleshaped / (Ob)-pyriform no
Elongate no
Irregular/coralloid yes
 
 Length of hyphal swellings (µm):(10.67) 17.12 - 33.85 (50) 
 Width of hyphal swellings (µm):(10.67) 17.12 - 33.85 (50) 
 
Clustering of hyphal swellings:
Solitary no
Catenulate, in chains no
Clustered / Aggregated yes
 
 
 
Presence of hyphal swellings:
In agar yes
On agar yes
 
In water yes
Absent no
 
 
Sexual state:
homothallic variable
heterothallic mating type A1 no
 
heterothallic mating type A2 yes
Sterile no
 
 
Daily growth
 Daily growth at 24 °C on CMA agar in mm:9.3 
 
Cardinal temperatures
 Lowest temperature at which sustained growth was observed:9 
 Highest temperature at which sustained growth was observed:30 
 Optimum growth temperature interval starts at ... °C:27 
 Optimum growth temperature interval ends at ... °C:30 

DNA sequence data

 Sequences in Q-bank:
 

Literature

 Original publication:
 
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