RRC ID 15617
Author Zhu D, Cui S, Nagata S.
Title Isolation and characterization of salt-sensitive mutants of the moderately halophilic bacterium Salinivibrio costicola subsp. yaniae.
Journal Biosci Biotechnol Biochem
Abstract Salinivibrio costicola subsp. yaniae is a moderately halophilic bacterium which can grow over a wide range of salinity. In response to external osmotic stress (1-3 M NaCl), S. costicola subsp. yaniae can accumulate ectoine, glycine betaine, and glutamate as compatible solutes. We used suicide plasmids pSUP101 to introduce transposon Tn1732 into S. costicola subsp. yaniae via Escherichia coli SM10 mediated by conjugation. One Tn1732-induced mutant, MU1, which was very sensitive to the external salt concentration, was isolated. Mutant MU1 did not grow above 1.5 M NaCl and did not synthesize ectoine, but accumulated Ngamma-acetyldiaminobutyrate, an ectoine precursor, as confirmed by (1)H-NMR analysis. From these data, we concluded that ectoine performs a key role in osmotic adaptation towards high salinity environments in strain S. costicola subsp. yaniae.
Volume 72(8)
Pages 1977-82
Published 2008-8-1
DOI 10.1271/bbb.70652
PII JST.JSTAGE/bbb/70652
PMID 18685202
MeSH Bacterial Proteins / genetics DNA Transposable Elements / genetics Magnetic Resonance Spectroscopy Microbial Viability / drug effects Mutation / genetics Sensitivity and Specificity Sodium Chloride / pharmacology* Vibrionaceae / drug effects* Vibrionaceae / genetics Vibrionaceae / isolation & purification*
IF 1.516
Times Cited 10
WOS Category FOOD SCIENCE & TECHNOLOGY CHEMISTRY, APPLIED BIOTECHNOLOGY & APPLIED MICROBIOLOGY BIOCHEMISTRY & MOLECULAR BIOLOGY
Resource
General Microbes JCM 14810