Numerical taxonomy of fluorescentPseudomonasassociated with tomato roots

✍ Scribed by I. -M. Stenström; A. Zakaria; A. Ternström; G. Molin

• Book ID: 104757930
• Publisher: Springer Netherlands
• Year: 1990
• Tongue: English
• Weight: 827 KB
• Volume: 57
• Category: Article
• ISSN: 0003-6072
• DOI: 10.1007/bf00400154

✦ Synopsis

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.