NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Population dynamics of transgenic strain Escherichia coli Z905/pPHL7 in freshwater and saline lake water microcosms with differing microbial community structuresPopulations of Escherichia coli Z905/pPHL7, a transgenic microorganism, were heterogenic in the expression of plasmid genes when adapting to the conditions of water microcosms of various mineralization levels and structure of microbial community. This TM has formed two subpopulations (ampicillin-resistant and ampicillin-sensitive) in every microcosm. Irrespective of mineralization level of a microcosm, when E. coli Z905/pPHL7 alone was introduced, the ampicillin-resistant subpopulation prevailed, while introduction of the TM together with indigenous bacteria led to the dominance of the ampicillin-sensitive subpopulation. A high level of lux gene expression maintained longer in the freshwater microcosms than in sterile saline lake water microcosms. A horizontal gene transfer has been revealed between the jointly introduced TM and Micrococcus sp. 9/pSH1 in microcosms with the Lake Shira sterile water. c2005 COSPAR. Published by Elsevier Ltd. All rights reserved.
Document ID
20050218192
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Popova, L. Yu
(Institute of Biophysics, Siberian Branch of Russian Academy of Sciences Krasnoyarsk, Russian Federation)
Kargatova, T. V.
Ganusova, E. E.
Lobova, T. I.
Boyandin, A. N.
Mogilnaya, O. A.
Pechurkin, N. S.
Date Acquired
August 23, 2013
Publication Date
January 1, 2005
Publication Information
Publication: Advances in space research : the official journal of the Committee on Space Research (COSPAR)
Volume: 35
Issue: 9
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available