Abstract
The effects of u.v. light and of several chemical agents on spores of the tetracycline producer Streptomyces aureofaciens MT1 were studied using survival curves and induction of histidine prototrophic revertants (his +). Spores were highly resistant to u.v.; NTG induced most his + revertants. 4-Nitroquinoline-1-oxide and methyl methanesulphonate also gave good yields of revertants. Whereas ethyl methanesulphonate had the least effect on inducing the revertants.
Similar content being viewed by others
References
BaltzR.H. 1986 Mutation in Steptomyces. In The Bacteria, Vol. 9, eds BayL. & QuenerS. pp. 61–93. London: Academic Press.
ChaterK. 1989 Sporulation in Streptomyces. In Regulation of Procaryotic Development, eds SmithI., SlepeckyR.A. & SetlowP. pp. 277–299. Washington: American Society for Microbiology.
ChaterK.F. 1984 Morphological and physiological differentiation in Streptomyces. In Microbial Development, eds LosickR. & ShapiroL. pp. 89–113. New York: Cold Spring Harbor Laboratory.
DelicV., HopwoodD.A. & FriendE.J. 1970 Mutagenesis by N-methyl-N'-nitro-N-nitrosoguanidine (NTG) in Streptomyces coelicolor. Mutation Research 9, 167–182.
FriedbergE.C. 1985 DNA Repair. New York: W.H. Freeman.
HopwoodD.A. 1967 Genetic analysis and genome structure in Streptomyces coelicolor. Bacteriology Reviews 31, 373–403.
HopwoodD.A., BibbM.J., ChaterK.F., KeiserT., BrutonC.J., KeiserH.M., LydiateD.J., SmithC.P., WardJ.M. & SchrempfH. 1985 Genetic Manipulation of Streptomyces: a Laboratory Manual. Norwich, UK: John Innes Institute Foundation.
HromicA. & KirbyR. 1989 Isolation and study of two mutants of Streptomyces cattleya affected in DNA repair and genetic instability. FEMS Microbiology Letters 57, 139–144.
IkenagaM., Ichikawa-RyoH. & KondoS. 1975 The major cause of inactivation and mutation by 4-nitroquinoline-1-oxide in Escherichia coli: excisable 4-NQO-purine adducts. Journal of Molecular Biology 92, 341–356.
NicholsonW.L., SetlowB. & SetlowP. 1991 Ultraviolet irradiation of DNA complexed with alpha/beta-type small, acid soluble proteins from spores of Bacillus or Clostridium species make spore photoproduct but not thymine dimers. Proceedings of the National Academy of Sciences of the United States of America 88, 8288–8292.
SetlowP. 1992 I will survive: protecting and repairing spore DNA. Journal of Bacteriology 174, 2737–2741.
StonesiferJ. & BaltzR.H. 1985 Mutagenic DNA repair in Streptomyces. Proceedings of the National Academy of Sciences of the United States of America 82, 1180–1183.
Torres, M., Costa, S.O.P. & Padilla, G. 1991 Genetic instability in Streptomyces aureofaciens MT1. Anais 17 Reunião de Genética de Microorganismos, Brasilia, Brazil, C1 (in Portuguese).
WalkerG.C. 1985 Inducible DNA repair systems. Annual Review of Biochemistry 54, 425–457.
Additional information
M. Marins is with the Department of Biochemistry, Institute of Chemistry, University of São Paulo, SP, Brazil. S.O.P. Costa and G. Padilla are with the Department of Microbiology, Biomedical Science Institute, University of São Paulo, Avenida Prof. Lineu Prestes 1374, SP, Brazil, CEP 05508-900
Rights and permissions
About this article
Cite this article
Marins, M., Costa, S.O.P. & Padilla, G. Effects of genotoxic agents on his + revertants and survival of spores of Streptomyces aureofaciens . World J Microbiol Biotechnol 10, 560–562 (1994). https://doi.org/10.1007/BF00367667
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF00367667