Gallaecimonas pentaromativorans gen. nov., sp. nov., a bacterium carrying 16S rRNA gene heterogeneity and able to degrade high-molecular-mass polycyclic aromatic hydrocarbons

Int J Syst Evol Microbiol. 2010 Mar;60(Pt 3):504-509. doi: 10.1099/ijs.0.013532-0. Epub 2009 Aug 4.


A Gram-negative, rod-shaped, halotolerant bacterium, designated strain CEE_131(T), which degraded high-molecular-mass polycyclic aromatic hydrocarbons of four and five rings, was isolated from intertidal sediment of Corcubion Ria in Cee, A Coruña, Spain. Direct sequencing showed ambiguities and suggested heterogeneity. Cloned 16S rRNA gene sequence PCR products yielded five different sequences varying at five positions. Strain CEE_131(T) showed rather distant relationships to its phylogenetically closest neighbours, including the genera Rheinheimera and Serratia , exhibiting 91 % sequence similarity with Rheinheimera perlucida BA131(T) and Serratia proteamaculans subsp. quinovora DSM 4597(T). The major fatty acids were C(16 : 1 )omega7c, C(16 : 0) and C(18 : 1)omega7c. The DNA G+C content was 41.7 mol%. On the basis of these distinct phenotypic and genotypic characteristics, strain CEE_131(T) is considered to represent a novel species in a new genus in the class Gammaproteobacteria, for which the name Gallaecimonas pentaromativorans gen. nov., sp. nov. is proposed. The type strain is CEE_131(T) (=DSM 21945(T)=CECT 7479(T)).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • DNA, Bacterial / genetics
  • DNA, Ribosomal / genetics
  • Fatty Acids / chemistry
  • Fatty Acids / metabolism
  • Gammaproteobacteria / classification*
  • Gammaproteobacteria / genetics
  • Gammaproteobacteria / isolation & purification*
  • Gammaproteobacteria / metabolism
  • Geologic Sediments / microbiology
  • Molecular Sequence Data
  • Phylogeny
  • Polycyclic Aromatic Hydrocarbons / metabolism*
  • RNA, Ribosomal, 16S / genetics*
  • Spain


  • DNA, Bacterial
  • DNA, Ribosomal
  • Fatty Acids
  • Polycyclic Aromatic Hydrocarbons
  • RNA, Ribosomal, 16S

Associated data

  • GENBANK/FM955223
  • GENBANK/FM955224
  • GENBANK/FM955225
  • GENBANK/FM955226
  • GENBANK/FM955227