Numerical taxonomy of fluorescent Pseudomonas associated with tomato roots

Antonie van Leeuwenhoek
I M StenströmG Molin

Abstract

The phenetic taxonomy of 110 fluorescent bacterial strains, isolated from the roots of tomatoes and other plants was numerically studied through 97 features including 69 assimilation tests. Thirty-two reference strains of various Pseudomonas spp. were additionally included. The strains clustered into 16 clusters at the 74% similarity level when using Jaccard similarity coefficients. Almost all field strains belonged to the P. fluorescens/P. putida-complex while none clustered with P. syringae and allied bacteria. The biovar II branch, as well as the newly described biovar VI of P. fluorescens, made up 55% and 20% respectively, of the field strains; two % were allocated to P. fluorescens biovar I and three % to biovar IV. Eleven % of the root associated strains were designated P. putida; six strains were biovar A, three strains biovar B while four strains could not be referred to any known biovar. The continuum within the P. fluorescens/P. putida-complex as well as the taxonomic status of the six biovars of P. fluorescens and the three biovars of P. putida are discussed.

References

Nov 1, 1986·Applied and Environmental Microbiology·D W James, N I Gutterson
Oct 1, 1980·Journal of General Microbiology·A B ChampionM Doudoroff
Jun 1, 1982·Journal of General Microbiology·G Molin, A Ternström
Jul 1, 1983·Applied and Environmental Microbiology·P A VandenberghB S Kunka
May 1, 1985·Applied and Environmental Microbiology·J O BeckerE Messens

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Citations

Feb 9, 2013·Research in Microbiology·Magdalena MuletJorge Lalucat

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