SECTION 3.3 Gamma Subclass

The Prokaryotes

pp 646-703

Nonmedical: Pseudomonas

  • Edward R. B. Moore
  • , Brian J. Tindall
  • , Vitor A. P. Martins Dos Santos
  • , Dietmar H. Pieper
  • , Juan-Luis Ramos
  • , Norberto J. Palleroni


Pseudomonas comprises a genus of species capable of utilizing a wide range of organic and inorganic compounds and of living under diverse environmental conditions. Consequently, they are ubiquitous in soil and water ecosystems and are important as plant, animal and human pathogens (Palleroni, 1992; Schroth et al., 1992). The genus Pseudomonas is well known for its metabolic versatility and genetic plasticity. The species of Pseudomonas, in general, grow rapidly and are particularly renowned for their ability to metabolize an extensive number of substrates, including toxic organic chemicals, such as aliphatic and aromatic hydrocarbons. Strains of Pseudomonas species are often resistant to antibiotics, disinfectants, detergents, heavy metals, and organic solvents. Some strains have been confirmed to produce metabolites that stimulate plant growth or inhibit plant pests.

Pseudomonas was already recognized as a complex collection of a large number of described species when the p ...

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