Genus Dickeya
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacteriales, Family Enterobacteriaceae, Genus Dickeya,
- Dickeya chrysanthemi (Burkholder et al. 1953) Samson et al. 2005, - type species of the genus; basonym: Erwinia chrysanthemi
Burkholder et al. 1953, old synonyms:
Pectobacterium chrysanthemi (Burkholder et al. 1953) Brenner et al. 1973, Erwinia carotovora
var. chrysanthemi
(Burkholder et al. 1953) Dye 1969, Pectobacterium cartovorum f. sp. chrysanthemi Dowson 1957, Pectobacterium
carotovorum var. chrysanthemi
(Burkholder et al. 1953) Graham and Dowson 1960, Pectobacterium parthenii Hellmers 1958;
2 biovars:
D. chrysanthemi bv. chrysanthemi & D. chrysanthemi bv. parthenii,
- Dickeya dadantii Samson et al. 2005,
- Dickeya dianthicola Samson et al. 2005,
- Dickeya dieffenbachiae Samson et al. 2005,
- Dickeya paradisiaca (Fernandez-Borrero and Lopez-Duque 1970) Samson et al. 2005, basonym: Erwinia paradisiaca Fernandez -
Borrero & Lopez-Duque 1970, other synonym:
Brenneria paradisiaca (Fernandez-Borrero and Lopez-Duque 1970) Hauben et al. 1999,
- Dickeya zeae Samson et al. 2005.
Gram-negative rods, 0.5–1.0 x 1.0–3.0 µm with rounded ends. Usually motile by
means of peritrichous flagella. Occur alone, in pairs, sometimes in chains.
S-type colonies. Growth temperature 36 ºC. Facultatively anaerobic.
- D. chrysanthemi was isolated from soft rot and wilt of Chrysanthemum spp.,Cynara scolymus, Cichorium intybus, Helianthus
annuus, Lycopersicon esculentum, Parthenium argentatum
& Philodendron spp.
- D. dadantii
was solated from soft rot and wilt of Pelargonium capitatum, Ananas comosus, Dianthus spp., Euphorbia pulcherrima,
Ipomoea batatas, Musa spp., Philodendron spp., Saintpaulia ionantha
& Zea mays.
- D. dianthicola
was isolated from soft rot and wilt of  Dianthus spp., Cichorium intybus, Cynara scolymus, Dahlia variabilis,
Kalanchoe blossfeldiana, Lycopersicon esculentum
& Solanum tuberosum.
- D. dieffenbachiae
was isolated from soft rot and wilt of Dieffenbachia spp., Lycopersicon esculentum & Musa spp.
- D. paradisiaca
was isolated from soft rot and wilt of plane tree, banana (Musa paradisiaca) & Zea mays.
-
D. zeae was isolated from water and from soft rot and wilt of  Zea mays, Ananas comosus, Brachiaria ruziziensis, Chrysanthemum
morifolium, Musa spp., Nicotiana tabacum, Oryza sativa
& Solanum tuberosum.
Cause vascular wilts or soft rots on a range of host plants (see ecology above).
  1. J. G. Holt et al., 1994. Facultatively Anaerobic Gram-Negative Rods. Subgroup 1. Family Enterobacteriaceae. In: Begey’s Manual of
    Determinative Bacteriology, 9th-edition, Williams & Wilkins, pp 175-189.
  2. Don J. Brenner and J.J. Farmer III, 2001. Family I. Enterobacteriaceae. In: Bergey’s Manual of Systematic Bacteriology, Second
    edition, Vol two, part B, George M. Garrity (Editor-in-Chief), pp 587-897.
  3. Regine Samson, Jean Bernard Legendre, Richard Christen, Marion Fischer-Le Saux, Wafa Achouak, and Louis Gardan. Transfer
    of Pectobacterium chrysanthemi (Burkholder et al. 1953) Brenner et al. 1973 and Brenneria paradisiaca to the genus Dickeya gen.
    nov. as Dickeya chrysanthemi comb. nov. and Dickeya paradisiaca comb. nov. and delineation of four novel species, Dickeya
    dadantii sp. nov., Dickeya dianthicola sp. nov., Dickeya dieffenbachiae sp. nov. and Dickeya zeae sp. nov. Int J Syst Evol Microbiol
    July 2005 55:1415-1427.
Positive results for nitrates reduction, indole production, catalase, acid production
from glucose. Pectinolytic. Oxidase negative. Catabolize L-arabinose, myo-inositol,
D-malate, malonate, D-mannose, mucate, saccharate and mesotartrate, and not  
D-trehalose, methyl alpha-glucoside, D-arabitol or sorbitol.
(c) Costin Stoica
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R E G N U M
PROKARYOTAE
 
Arginine
dihydrolase
Lactose
Inulin
D-Arabinose
Mannitol
myo-Inositol
Casein
D. chrysanthemi biovar chrysanthemi
-
[-]
+
-
+
[+]
+
D. chrysanthemi biovar parthenii
-
[+]
-
-
+
+
[+]
D. dadantii & D.zeae
+
+
-
+
+
+
+
D. dianthicola
-
-
[+]
-
+
+
+
D. dieffenbachiae
+
-
-
+
+
+
+
D. paradisiaca
+
[-]
-
+
-
-
-
Differential characters of the species:
Legend: +  positive 90-100%, - negative 90-100%, [+] positive 75-89%, [-] negative 75-89%, d positive 25-74% of strains
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