OXYGEN DEPENDENT X-RAY LESION IN ESCHERICHIA-COLI STRAIN B-R DETECTED BY PENICILLIN

被引：12

作者：

GILLIES, NE

OBIOHA, FI

RATNAJOTHI, NH

机构：

[1] Department of Biology as Applied to Medicine, The Middlesex Hospital Medical School, London

来源：

INTERNATIONAL JOURNAL OF RADIATION BIOLOGY | 1979年 / 36卷 / 06期

关键词：

D O I：

10.1080/09553007914551411

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Enhancement of lethal damage to E. coli B/r by penicillin was observed after X-irradiation under aerobic conditions but not after exposure to X-rays under anoxia or after U.V. (260 nm). No enhancement of damage occurred when incubation with penicillin was delayed for 2 hours after aerobic X-irradiation. This enhancing effect was only detected in this strain and not in the filamentous strain E. coli B. It is concluded that an X-ray induced lesion, sensitive to the presence of oxygen at the time of irradiation and probably located in the cell envelope, initiates filamentation in E. coli B/r, which results in lethal damage in this strain. © 1979 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted.

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页码：587 / 594

页数：8

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