Competitive colonization betweenPseudomonas species in sterile soils
| Autor: | Evangelia Platsouka, Boutros Jadoun Al-Achi, Stuart B. Levy |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
biology
Inoculation media_common.quotation_subject Pseudomonas fluorescens General Medicine Interspecific competition biology.organism_classification complex mixtures Applied Microbiology and Biotechnology Microbiology Competition (biology) Pseudomonas putida Colonisation Soil water Botany Colonization media_common |
| Zdroj: | Current Microbiology. 23:97-104 |
| ISSN: | 1432-0991 0343-8651 |
| DOI: | 10.1007/bf02092257 |
| Popis: | When introduced as pairs into irradiated, sterile soils, aPseudomonas fluorescens strain prevented optimal colonization by aP. putida strain. The addition ofP. putida to sterile soil already populated byP. fluorescens impeded growth ofP. putida in that soil. However, addingP. fluorescens to soil populated withR. putida did not prevent growth ofP. fluorescens and caused a decrease in the titer ofP. putida. This “preemptive colonization/exclusion” phenomenon was also observed between two isogenic strains. The degree of exclusion depended on the amount of time between the inoculation of the two strains and which organism was introduced first. These results suggest competition for similar “niches” in soils and a hierarchy of fitness among pseudomonads sharing a soil environment. Autoclaving of the soil removed the competitive colonization betweenPseudomonas spp. observed in irradiated soils. The competitive colonization of irradiated soils by these twoPseudomonas sp. was reflected in their relative survival when introduced into nonsterile soil. |
| Databáze: | OpenAIRE |
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