THE EFFECT OF U V MUTAGEN ON PHYSIOLOGICAL PROPERTIES OF ASSOCIATIVE N2-FIXING BACTERIA

doi:10.3321/j.issn:1000-7091.1986.02.010

Abstract

Abstract: This paper reports on the two results of Ultra-Violet mutations that oc-curred through radiation treatments for 5 minutes.N ase activity of the selected mutant strain nl-1 is higher than 549, and 1\I-1-5-5 has drug fast of the order 400r-Km. The lowest antibiotic concentration of Km.inhibiting strains 549 and M-1 varies with inoculating bacterial concentrations.It is 1.5-6.25r/ml at 10' of inoculating bacterial concentration. The mutants M-1 and M-1-5-5 retain basically the characteristics of origi-nal strain 549,but they grow ctuiclier than 549 in liquid cultures. The experiments show that the dr ug fast gene of strain M-I-J-J is not in the plasmid and that the drug fast is stable.

Key words: Mutagen, Ultra-violet, Associatve N2-fxng battera

Zhou Feng, Zhang Qihang, Jiang Youyi, Zhang Maiqing, Liu Jianling. THE EFFECT OF U V MUTAGEN ON PHYSIOLOGICAL PROPERTIES OF ASSOCIATIVE N2-FIXING BACTERIA[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1986, 1(2): 64-69. doi: 10.3321/j.issn:1000-7091.1986.02.010.

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