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Goodman AE, Hild E, Marshall KC, Hermansson M. Conjugative Plasmid Transfer between Bacteria under Simulated Marine Oligotrophic Conditions. Appl Environ Microbiol 1993; 59:1035-40. [PMID: 16348904 PMCID: PMC202234 DOI: 10.1128/aem.59.4.1035-1040.1993] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Marine
Vibrio
S14 strains and an
Escherichia coli
strain were starved in artificial seawater (NSS) with no added carbon, nitrogen, or phosphorus. The broad-host-range plasmid RP1 was transferred between the starving S14 strains and also from the
E. coli
donor to the S14 recipient under oligotrophic conditions, in which mixtures of donor and recipient cells were held on Nuclepore filters either floated on NSS or held such that NSS flowed through the filter. Transconjugants were obtained from S14 donors and recipients starved for at least 15 days before being mixed together for conjugation, whereas transconjugants were recovered from the
E. coli
donor and S14 recipient for up to 3 days of prestarvation, but not after 5 days. Transconjugants were obtained when there were as few as about 10
5
and 10
4
cells of starving S14 donors and recipients, respectively, per ml held on the filters. Starved donor and recipient mixtures incubated at 4 or 26°C, as well as those allowed to mate for 2, 5, or 24 h, all yielded numbers of transconjugants which were not significantly (
P
> 0.05) different.
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Affiliation(s)
- A E Goodman
- School of Microbiology and Immunology, The University of New South Wales, P.O. Box 1, Kensington, 2033, NSW, Australia
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Jouper-Jaan Ã, Goodman AE, Kjelleberg S. Bacteria starved for prolonged periods develop increased protection against lethal temperatures. FEMS Microbiol Lett 1992. [DOI: 10.1111/j.1574-6968.1992.tb05779.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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