NDLI: Horizontal transfer of catabolic plasmids in the process of naphthalene biodegradation in model soil systems

Content Provider	Springer Nature Link
Author	Akhmetov, L. I. Filov, A. E. Puntus, I. F. Kosheleva, I. A. Nechaeva, I. A. Yonge, D. R. Petersen, J. N. Boronin, A. M.
Copyright Year	2008
Abstract	The process of naphthalene degradation by indigenous, introduced, and transconjugant strains was studied in laboratory soil microcosms. Conjugation transfer of catabolic plasmids was demonstrated in naphthalene-contaminated soil. Both indigenous microorganisms and an introduced laboratory strain BS394 (pNF142::TnMod-OTc) served as donors of these plasmids. The indigenous bacterial degraders of naphthalene isolated from soil were identified as Pseudomonas putida and Pseudomonas fluorescens. The frequency of plasmid transfer in soil was 10$^{−5}$–10$^{−4}$ per donor cell. The activity of the key enzymes of naphthalene biodegradation in indigenous and transconjugant strains was studied. Transconjugant strains harboring indigenous catabolic plasmids possessed high salicylate hydroxylase and low catechol-2,3-dioxygenase activities, in contrast to indigenous degraders, which had a high level of catechol-2,3-dioxygenase activity and a low level of salicylate hydroxylase. Naphthalene degradation in batch culture in liquid mineral medium was shown to accelerate due to cooperation of the indigenous naphthalene degrader P. fluorescens AP1 and the transconjugant strain P. putida KT2442 harboring the indigenous catabolic plasmid pAP35. The role of conjugative transfer of naphthalene biodegradation plasmids in acceleration of naphthalene degradation was demonstrated in laboratory soil microcosms.
Starting Page	23
Ending Page	32
Page Count	10
File Format	PDF
ISSN	00262617
Journal	Microbiology
Volume Number	77
Issue Number	1
e-ISSN	16083237
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-01-19
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	catabolic plasmids horizontal transfer naphthalene biodegradation Pseudomonas Medical Microbiology Microbiology
Content Type	Text
Resource Type	Article
Subject	Microbiology Applied Microbiology and Biotechnology

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