تطوير نظام بكتري لتحديد المطفرات في البيئة و الأغذية : رابعا : استعمال المطفرات المحورة هيدروكسيل أمين

الملخص EN

Modifying mutagen, Hydroxylamine (HA) used to study the response of isolates in G-system which is composed of three isolates Gj ( Bacillus j,Gi2 < Arthrobacter) and G>7 ( Brevibacterium).

The isolates were treated with HA at increasing concentrations under similar conditions used for treatment with NTG.

Results indicated that IIA led to rcducc the survival fraction of the three isolates as in NTG treatment.

HA induced streptomycin resistant mutants at higher level than NTG, but this was not true for rifampicin resistant mutant.

This manner reflected on the induced mutant frequency.

The relative mutability by HA was recorded tor G^ & this isolate was the most sensitive toward both mutagens.