Abstract
A marine cyanobacterium Synechococcus sp. NKBG 042902 grown in the presence of various NaCl concentrations showed different plasmid profiles. This strain possesses a 2.7-kb endogenous plasmid pSY10, whose copy number increased five-fold when the salinity of the growth medium was increased from 0 to 3% NaCl. Cells were grown initially in a fresh water medium and then transferred to a NaCl supplemented medium. The copy number of pSY10 began to increase after 7 h of incubation in 3% NaCl BG11 medium. This phenomenon was specific to NaCl and did not occur when other osmotica such as KCl and sorbitol were used. This is the first report of a cyanobacterial plasmid with a salinity-dependent copy number.
| Original language | English |
|---|---|
| Pages (from-to) | 95-98 |
| Number of pages | 4 |
| Journal | FEMS Microbiology Letters |
| Volume | 90 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1991 Dec 15 |
| Externally published | Yes |
Keywords
- Copy number
- Marine cyanobacterium
- Plasmid
- Sodium chloride
- Synechococcus
ASJC Scopus subject areas
- Microbiology
- Molecular Biology
- Genetics
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Cite this
Takeyama, H., Grant Burgess, J., Sudo, H., Sode, K., & Matsunaga, T. (1991). Salinity-dependent copy number increase of a marine cyanobacterial endogenous plasmid. FEMS Microbiology Letters, 90(1), 95-98. https://doi.org/10.1016/0378-1097(91)90653-R