| Erwinia psidii |
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Legend: + positive 90-100%, - negative 90-100%, [+] positive 75-89%, [-] negative 75-89%, d positive 25-74% of strains
Differential characters of the species:
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Enterobacterales, Family Erwiniaceae, Genus Erwinia,
Erwinia psidii Rodrigues Neto et al. 1988.
Erwinia psidii Rodrigues Neto et al. 1988.
Gram negative, straight bacilli, motile by peritrichous flagella, 0.5-1.0 x 1-3 μm.
Colonies are generally smooth, mucoid and domed and can vary in color from white
to light-beige, circular, 1-3 mm in diameter after 24-48 hours. Facultatively anaerobic.
Optimum growth temperature 26-30 ºC. Normally grow at temperatures below 36 ºC.
Media: Nutrient agar or nutrient broth, Trypticase Soy Agar ± 5% sheep blood,
Luria-Bertani (LB) agar, Brain-heart infusion (BHI) agar.
to light-beige, circular, 1-3 mm in diameter after 24-48 hours. Facultatively anaerobic.
Optimum growth temperature 26-30 ºC. Normally grow at temperatures below 36 ºC.
Media: Nutrient agar or nutrient broth, Trypticase Soy Agar ± 5% sheep blood,
Luria-Bertani (LB) agar, Brain-heart infusion (BHI) agar.
Associated with plants.
Causes fruit rot in guava. Experimentally was pathogenic to strawberry guava (Psidium cattleianum), jambolana (Eugenia
jambolana), “melaleuca” (Melaleuca viridiflora), and Myrtaceae family.
jambolana), “melaleuca” (Melaleuca viridiflora), and Myrtaceae family.
- 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. - 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. - Adeolu M, Alnajar S, Naushad S, S Gupta R. Genome-based phylogeny and taxonomy of the 'Enterobacteriales': proposal for
Enterobacterales ord. nov. divided into the families Enterobacteriaceae, Erwiniaceae fam. nov., Pectobacteriaceae fam. nov.,
Yersiniaceae fam. nov., Hafniaceae fam. nov., Morganellaceae fam. nov., and Budviciaceae fam. nov. Int J Syst Evol Microbiol
2016; 66:5575-5599.
Positive results for catalase and acid production from glucose.
Negative results for pectinase, oxidase, urease, phenilalanine deaminase, arginine dihydrolase and indole production.
Negative results for pectinase, oxidase, urease, phenilalanine deaminase, arginine dihydrolase and indole production.
(c) Costin Stoica
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