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Plant growth-promoting Pseudomonas bearing catabolic plasmids: Naphthalene degradation and effect on plants

Paper ID Volume ID Publish Year Pages File Format Full-Text
35935 45115 2006 7 PDF Available
Title
Plant growth-promoting Pseudomonas bearing catabolic plasmids: Naphthalene degradation and effect on plants
Abstract

Two IncP-9 naphthalene degradative plasmids pOV17 and pBS216 were transferred into plant growth-promoting Pseudomonas which were represented by species P. aureofaciens, P. chlororaphis, P. fluorescens, and P. putida. The strains with the same plasmid differed significantly by their growth parameters, stability of the plasmid and plant protective effect from naphthalene action. Strains P. putida 53a(pOV17) and P. chlororaphis PCL1391(pOV17) demonstrated higher population number in the rhizosphere. Moreover, they protected the mustard plants from naphthalene toxic influence more effectively than the wild type strain P. aureofaciens OV17(pOV17). The activity of catechol-2,3-dioxygenase in the strains with the plasmid pOV17 was higher than that in strains with the plasmid pBS216. The strain P. putida 53a(pOV17) with high catechol-2,3-dioxygenase activity has been demonstrated to have the best protective effect. The strain P. putida 53a(pBS216) without catechol dioxygenases activities did not have protective effect but suppressed the plant germination.

Keywords
Plant growth-promoting rhizosphere bacteria Pseudomonas; Naphthalene; Plasmids; Plant–bacteria interactions
First Page Preview
Plant growth-promoting Pseudomonas bearing catabolic plasmids: Naphthalene degradation and effect on plants
Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 12, December 2006, Pages 2417–2423
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering