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Genetic labelling and application of the isoproturon-mineralizing Sphingomonas sp strain SRS2 in soil and rhizosphere
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Kristensen, K. E., Jacobsen, C. S., Hansen, L. H., Aamand, J., Morgan, J. Alun W., Sternberg, C. and Sorensen, S. R. (2006) Genetic labelling and application of the isoproturon-mineralizing Sphingomonas sp strain SRS2 in soil and rhizosphere. Letters in Applied Microbiology, Volume 43 (Number 3). pp. 280-286. doi:10.1111/j.1472-765X.2006.01956.x
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Official URL: http://dx.doi.org/10.1111/j.1472-765X.2006.01956.x
Abstract
Aims: To construct a luxAB-labelled Sphingomonas sp. strain SRS2 maintaining the ability to mineralize the herbicide isoproturon and usable for monitoring the survival and distribution of strain SRS2 on plant roots in laboratory systems.
Methods and Results: We inserted the mini-Tn5-luxAB marker into strain SRS2 using conjugational mating. In the transconjugant mutants luciferase was produced in varying levels. The mutants showed significant differences in their ability to degrade isoproturon. One luxAB-labelled mutant maintained the ability to mineralize isoproturon and was therefore selected for monitoring colonization of barley roots.
Conclusions: We successfully constructed a genetically labelled isoproturon-mineralizing-strain SRS2 and demonstrated its ability to survive in soil and its colonization of rhizosphere.
Significance and Impact of Study: The construction of a luxAB-labelled strain SRS2 maintaining the degradative ability, provides a powerful tool for ecological studies serving as the basis for evaluating SRS2 as a bioremediation agent.
| Item Type: | Journal Article | ||||
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| Subjects: | T Technology > TP Chemical technology Q Science > QR Microbiology |
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| Divisions: | Faculty of Science > Life Sciences (2010- ) > Warwick HRI (2004-2010) | ||||
| Journal or Publication Title: | Letters in Applied Microbiology | ||||
| Publisher: | Wiley-Blackwell Publishing Ltd. | ||||
| ISSN: | 0266-8254 | ||||
| Official Date: | September 2006 | ||||
| Dates: |
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| Volume: | Volume 43 | ||||
| Number: | Number 3 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | pp. 280-286 | ||||
| DOI: | 10.1111/j.1472-765X.2006.01956.x | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access |
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