Evolutionary relationships among cyanobacteria and green chloroplasts

S. J. Giovannoni, S. Turner, Gary J Olsen, S. Barns, D. J. Lane, N. R. Pace

Research output: Contribution to journalArticle

Abstract

The 16S rRNAs from 29 cyanobacteria and the cyanelle of the phytoflagellate Cyanophora paradoxa were partially sequenced by a dideoxynucleotide-terminated, primer extensionr method. A least-squares distance matrix analysis was used to infer phylogenetic trees that include green chloroplasts (those of euglenoids, green algae, and higher plants). The results indicate that many diverse forms of cyanobacteria diverged within a short span of evolutionary distance. Evolutionary depth within the surveyed cyanobacteria is substantially less than that separating the major eubacterial taxa, as though cyanobacterial diversification occurred significantly after the appearance of the major eubacterial groups. Three of the five taxonomic sections defined by Rippka et al. (R. Rippka, J. Deruelles, J. B. Waterbury, M. Herdman, and R. Y. Stanier, J. Gen. Microbiol. 111:1-61, 1979) (sections II [pleurocapsalean], IV [heterocystous filamentous, nonbranching], and V [heterocystous, filamentous, branching] are phylogenetically coherent. However, the other two sections (I[unicellular] and III [nonheterocystous, filamentous]) are intermixed and hence are not natural groupings. Our results not only support the conclusion of previous workers that the cyanobacteria and green chloroplasts form a coherent phylogenetic group but also suggest that the chloroplast lineage, which includes the cyanelle of C. paradoxa, is not just a sister group to the free-living forms but rather is contained within the cyanobacterial radiation.

Original languageEnglish (US)
Pages (from-to)3584-3592
Number of pages9
JournalJournal of bacteriology
Volume170
Issue number8
DOIs
StatePublished - Jan 1 1988
Externally publishedYes

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Cyanobacteria
Chloroplasts
Cyanophora
Dideoxynucleotides
Chlorophyta
Least-Squares Analysis
Radiation

ASJC Scopus subject areas

  • Microbiology
  • Molecular Biology

Cite this

Evolutionary relationships among cyanobacteria and green chloroplasts. / Giovannoni, S. J.; Turner, S.; Olsen, Gary J; Barns, S.; Lane, D. J.; Pace, N. R.

In: Journal of bacteriology, Vol. 170, No. 8, 01.01.1988, p. 3584-3592.

Research output: Contribution to journalArticle

Giovannoni, SJ, Turner, S, Olsen, GJ, Barns, S, Lane, DJ & Pace, NR 1988, 'Evolutionary relationships among cyanobacteria and green chloroplasts', Journal of bacteriology, vol. 170, no. 8, pp. 3584-3592. https://doi.org/10.1128/jb.170.8.3584-3592.1988
Giovannoni, S. J. ; Turner, S. ; Olsen, Gary J ; Barns, S. ; Lane, D. J. ; Pace, N. R. / Evolutionary relationships among cyanobacteria and green chloroplasts. In: Journal of bacteriology. 1988 ; Vol. 170, No. 8. pp. 3584-3592.
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