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A common origin of rickettsiae and certain plant pathogens.

Authors
  • Weisburg, W G
  • Woese, C R
  • Dobson, M E
  • Weiss, E
Type
Published Article
Journal
Science (New York, N.Y.)
Publication Date
Nov 01, 1985
Volume
230
Issue
4725
Pages
556–558
Identifiers
PMID: 3931222
Source
Medline
License
Unknown

Abstract

On the basis of ribosomal RNA sequence comparisons, the rickettsia Rochalimaea quintana has been found to be a member of subgroup 2 of the alpha subdivision of the so-called purple bacteria, which is one of about ten major eubacterial divisions. Within subgroup alpha-2, R. quintana is specifically related to the agrobacteria and rhizobacteria, organisms that also have close associations with eukaryotic cells. This genealogical grouping of the rickettsiae with certain plant pathogens and intracellular symbionts suggests a possible evolution of the rickettsiae from plant-associated bacteria.

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