Current Microbiology

, Volume 73, Issue 5, pp 721–726 | Cite as

Role of Base Excision Repair (BER) in Transcription-associated Mutagenesis of Nutritionally Stressed Nongrowing Bacillus subtilis Cell Subpopulations

  • Verónica Ambriz-Aviña
  • Ronald E. Yasbin
  • Eduardo A. Robleto
  • Mario Pedraza-ReyesEmail author


Compelling evidence points to transcriptional processes as important factors contributing to stationary-phase associated mutagenesis. However, it has not been documented whether or not base excision repair mechanisms play a role in modulating mutagenesis under conditions of transcriptional derepression. Here, we report on a flow cytometry-based methodology that employs a fluorescent reporter system to measure at single-cell level, the occurrence of transcription-associated mutations in nutritionally stressed B. subtilis cultures. Using this approach, we demonstrate that (i) high levels of transcription correlates with augmented mutation frequency, and (ii) mutation frequency is enhanced in nongrowing population cells deficient for deaminated (Ung, YwqL) and oxidized guanine (GO) excision repair, strongly suggesting that accumulation of spontaneous DNA lesions enhance transcription-associated mutagenesis.


Base Excision Repair Subtilis Cell Missense Allele Transcriptional Derepression Fluorescent Phenotype 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported by the Consejo Nacional de Ciencia y Tecnología (CONACYT; Grants 205744 and 221231) of México and by the University of Guanajuato (Grants 936-2016 and 1090-2016). V. A–A was supported by a doctoral scholarship from CONACYT.

Compliance with Ethical Standards

Conflicts of Interest

The authors declare no conflict of interest.

Supplementary material

284_2016_1122_MOESM1_ESM.docx (88 kb)
Supplementary material 1 (DOCX 87 kb)


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Verónica Ambriz-Aviña
    • 1
  • Ronald E. Yasbin
    • 3
  • Eduardo A. Robleto
    • 2
  • Mario Pedraza-Reyes
    • 1
    Email author
  1. 1.Department of Biology, Division of Natural and Exact SciencesUniversity of GuanajuatoGuanajuatoMexico
  2. 2.School of Life SciencesUniversity of NevadaLas VegasUSA
  3. 3.College of Arts and SciencesUniversity of Missouri-St LouisSt LouisUSA

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