Summary
Conditions for genetic transformation of the xylanase-negative (X−) strain of Chainia with pIJ 702 were optimized. The growth of Chainia at 30°C for 36 – 40 h and addition of geletin (1%) to the medium resulted in the maximum yield of protoplasts and regeneration efficiency. Poor transformation efficiency of Chainia (X−) protoplasts by native pIJ 702 versus improved efficiency (16 transformants ug−1 of plasmid DNA) by prior heating of protoplasts at 42°C for 10 min suggests the occurrence of a restriction system in Chainia. Increased transformation efficiency by passage of the plasmid through Chainia together with the altered methylation status of the transformant plasmid presents evidence for the existence of an operative modification system in Chainia. Development of thiostrepton resistance and formation of me1amin pigment in Chainia (X−) by transformation with pIJ 702 reveal that genes from Streptomyces can be functionally expressed by Chainia (X−).
Similar content being viewed by others
References
Bailey, C.R.,and Winstanely, D.J. (1986). J.Gen. Microbiol. 32, 2945–2947.
Chauthaiwale, V.M. and Deshpande V.V.(1992) FEMS Microbiol.Lett.99, 265–270.
Chauthaiwale, V.M., Vyas P.R. and Deshpande, V.V. (1991) Can J. Microbiol. 37, 713–715.
Cross, T. and Goodfellow, M. (1973) Taxonomy and classification of the actinomycete: Characteristics and practical importance. Academic Press London, pp 11–12.
Engel P. (1987) Appl. Environ. Microbiol. 53, 1–3.
Goodfellow, M., Williams, S.T., Anderson, G.(1986) Syst. Appl. Microbiol. 8, 55–60.
Hopwood, D.A., Bibb, M.J., Chater, K.F., Kieser, T., Bruton, C.J., Kieser, H.M., Lydiate, D.L., Smith, C.P., Ward, J.M., Schrempf, H. (1985) Genetic manipulation of Streptomyces. A laboratory mannual, John Innes Foundation, Norwich, England.
Katz, E., Thompson, C.J.,and Hopwood, D.A. (1993) J. Gen. Microbiol. 128, 2703–271.
Matsushima, P. and Baltz, R.H. (1955) J. Bac. 163, 180–185.
Mondou, F., Shareck, F.M., Morosoli, R. and Klupfel, D.(1986) Gene, 49, 323–329
Srinivasan, M.C., Vartak, H.G., Powar, V.K., Rele, M.V., and Bastawde, K.B.(1984) Biotechnol.Lett. 6, 715–718.
Author information
Authors and Affiliations
Additional information
(NCL Communication No. 6207)
Rights and permissions
About this article
Cite this article
Rao, M., Khadilkar, S., Srinivasan, M.C. et al. Development of Chainia as a host for xylanase gene cloning : Evidence for occurrence of a restriction-modification system. Biotechnol Lett 18, 327–332 (1996). https://doi.org/10.1007/BF00142953
Issue Date:
DOI: https://doi.org/10.1007/BF00142953