A constant rate of spontaneous mutation in DNA-based microbes.
Open accessAbstract
In terms of evolution and fitness, the most significant spontaneous mutation rate is likely to be that for the entire genome (or its nonfrivolous fraction). Information is now available to calculate this rate for several DNA-based haploid microbes, including bacteriophages with single- or double-stranded DNA, a bacterium, a yeast, and a filamentous fungus. Their genome sizes vary by approximately 6500-fold. Their average mutation rates per base pair vary by approximately 16,000-fold, whereas their mutation rates per genome vary by only approximately 2.5-fold, apparently randomly, around a mean value of 0.0033 per DNA replication. The average mutation rate per base pair is inversely proportional to genome size. Therefore, a nearly invariant microbial mutation rate appears to have evolved. Because this rate is uniform in such diverse organisms, it is likely to be determined by deep general forces, perhaps by a balance between the usually deleterious effects of mutation and the physiological costs of further reducing mutation rates.
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Increased tolerance of S. cerevisiae towards lignocellulosic hydrolysates such as acetic acid and furfural was correlated with adaptive changes of the oxidative stress response.
“Increased tolerance of S. cerevisiae towards lignocellulosic hydrolysates such as acetic acid and furfural was correlated with adaptive changes of the oxidative stress response [112].”
From Adaptive laboratory evolution—Principles and applications for biotechnology (2013) · cites this paper as [112]
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From Adaptive laboratory evolution—Principles and applications for biotechnology (2013) · cites this paper as [112]
Cites
Escherichia Coli and Salmonella: Typhimurium Cellular and Molecular Biology
Neidhardt, F. C., & Ingraham, J. L. (1987) · Medical Entomology and Zoology · Cited by 4,089 · see citing works
Mutations of bacteria from virus sensitivity to virus resistance
Luria, S. E., & Delbrück, M. (1943) · Genetics · doi:10.1093/genetics/28.6.491 · Cited by 3,894 · see citing works
BARNETT, V. D., Lewis, T., & Abeles, F. F. (1979) · Physics Today · doi:10.1063/1.2995737 · Cited by 2,834 · see citing works
Chemical Mutagens. Principles and Methods for Their Detection.
(1974) · Annals of Internal Medicine · doi:10.7326/0003-4819-80-3-439_4 · Cited by 1,456 · see citing works
Nucleotide sequence of bacteriophage λ DNA
Sanger, F., Coulson, A. R., Hong, G. F., Hill, D. F., & Petersen, G. B. (1982) · Journal of Molecular Biology · doi:10.1016/0022-2836(82)90546-0 · Cited by 1,174 · see citing works
Cairns, J., Overbaugh, J., & Miller, S. (1988) · Nature · doi:10.1038/335142a0 · Cited by 1,025 · see citing works
Evolution in bacteria: Evidence for a universal substitution rate in cellular genomes
Ochman, H., & Wilson, A. C. (1987) · Journal of Molecular Evolution · doi:10.1007/bf02111283 · Cited by 780 · see citing works
Farabaugh, P. J. (1978) · Nature · doi:10.1038/274765a0 · Cited by 457 · see citing works
Nucleotide sequence of the filamentous bacteriophage M13 DNA genome: comparison with phage fd
van Wezenbeek, P. M. G. F., Hulsebos, T. J. M., & Schoenmakers, J. G. G. (1980) · Gene · doi:10.1016/0378-1119(80)90093-1 · Cited by 411 · see citing works
A Physical Map of the Escherichia coli K12 Genome
Smith, C. L., Econome, J. G., Schutt, A. D., et al. (1987) · Science · doi:10.1126/science.3296194 · Cited by 401 · see citing works
The Adaptive Responses of Escherichia coli to a Feast and Famine Existence
Koch, A. L. (1971) · Advances in microbial physiology/Advances in Microbial Physiology · doi:10.1016/s0065-2911(08)60069-7 · Cited by 393 · see citing works
Spontaneous point mutations that occur more often when advantageous than when neutral.
Hall, B. G. (1990) · Genetics · doi:10.1093/genetics/126.1.5 · Cited by 326 · see citing works
Kunkel, T. A. (1985) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(18)89090-1 · Cited by 316 · see citing works
THE MOLECULAR BASIS OF MUTATION
Drake, J. W., & Flamm, W. G. (1972) · Elsevier eBooks · doi:10.1016/b978-0-12-677950-9.50008-8 · Cited by 313 · see citing works
Self-citationSchaaper, R. M., Danforth, B. N., & Glickman, B. W. (1986) · Journal of Molecular Biology · doi:10.1016/0022-2836(86)90509-7 · Cited by 306 · see citing works
Structure and function of the yeast URA3 gene: expression in Escherichia coli
Rose, M. D., Grisafi, P. L., & Botstein, D. (1984) · Gene · doi:10.1016/0378-1119(84)90172-0 · Cited by 302 · see citing works
Kunkel, T. A., & Alexander, P. S. (1986) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(17)42446-x · Cited by 299 · see citing works
An Electrophoretic Karyotype of Neurospora crassa
Orbach, M. J., Vollrath, D., Davis, R. W., & Yanofsky, C. (1988) · Molecular and Cellular Biology · doi:10.1128/mcb.8.4.1469 · Cited by 279 · see citing works
Genetic map of Saccharomyces cerevisiae , edition 10
Mortimer, R., Schild, D., Contopoulou, C. R., et al. (1989) · Yeast · doi:10.1002/yea.320050503 · Cited by 277 · see citing works
Yeast ribosomal DNA genes are located on chromosome XII.
Petes, T. D. (1979) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.76.1.410 · Cited by 244 · see citing works
Paquin, C., & Adams, J. (1983) · Nature · doi:10.1038/302495a0 · Cited by 239 · see citing works
Spontaneous Mutation: Genetic Control of Mutation Rates in Bacteriophage T4
Drake, J. W., Allen, E. F., Forsberg, S. A., Preparata, R.-M., & Greening, E. O. (1969) · Nature · doi:10.1038/2211128a0 · Cited by 206 · see citing works
Self-citationHartman, P. E., Hartman, Z., Stahl, R. C., et al. (1971) · Advances in genetics · doi:10.1016/s0065-2660(08)60352-1 · Cited by 201 · see citing works
Hoffmann, W. (1985) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(17)39106-8 · Cited by 162 · see citing works
rII cistrons of bacteriophage T4
Pribnow, D. G., Sigurdson, D. C., Gold, L., et al. (1981) · Journal of Molecular Biology · doi:10.1016/0022-2836(81)90477-0 · Cited by 157 · see citing works
THE CAN1 LOCUS OF SACCHAROMYCES CEREVISIAE: FINE-STRUCTURE ANALYSIS AND FORWARD MUTATION RATES
Whelan, W. L., Gocke, E., & Manney, T. R. (1979) · Genetics · doi:10.1093/genetics/91.1.35 · Cited by 156 · see citing works
Structure and function of the Salmonella typhimurium and Escherichia coli K-12 histidine operons
Carlomagno, M. S., Chiariotti, L., Alifano, P., Nappo, A. G., & Bruni, C. B. (1988) · Journal of Molecular Biology · doi:10.1016/0022-2836(88)90194-5 · Cited by 151 · see citing works
Electron microscope heteroduplex study of sequence relations of T2, T4, and T6 bacteriophage DNAs
Kim, J.-S., & Davidson, N. (1974) · Virology · doi:10.1016/0042-6822(74)90111-1 · Cited by 149 · see citing works
Luria, S. E. (1951) · Cold Spring Harbor Symposia on Quantitative Biology · doi:10.1101/sqb.1951.016.01.033 · Cited by 126 · see citing works
DNA sequence of the bacteriophage λ cI gene
Sauer, R. T. (1978) · Nature · doi:10.1038/276301a0 · Cited by 120 · see citing works
Yeast arginine permease: nucleotide sequence of the CAN1 gene
Ahmad, M., & Bussey, H. (1986) · Current Genetics · doi:10.1007/bf00418125 · Cited by 93 · see citing works
Coleman, K. G., Steensma, H. Y., Kaback, D. B., & Pringle, J. R. (1986) · Molecular and Cellular Biology · doi:10.1128/mcb.6.12.4516 · Cited by 74 · see citing works
Changes in DNA base sequence induced by gamma-ray mutagenesis of lambda phage and prophage.
Tindall, K. R., Stein, J., & Hutchinson, F. (1988) · Genetics · doi:10.1093/genetics/118.4.551 · Cited by 69 · see citing works
Mutagenic action during meiosis and antimutagenic action during mitosis by 5-aminoacridine in yeast
Magni, G. E., von Borstel, R. C., & Sora, S. (1964) · Mutation research. Fundamental and molecular mechanisms of mutagenesis · doi:10.1016/0027-5107(64)90003-x · Cited by 65 · see citing works
Lee, G. S. F., Savage, E. A., Ritzel, R. G., & von Borstel, R. C. (1988) · Molecular and General Genetics MGG · doi:10.1007/bf00330472 · Cited by 65 · see citing works
DNA base sequence changes induced by bromouracil mutagenesis of lambda phage
Skopek, T. R., & Hutchinson, F. (1982) · Journal of Molecular Biology · doi:10.1016/0022-2836(82)90029-8 · Cited by 65 · see citing works
An Electrophoretic Karyotype of Neurospora crassa
Orbach, M. J., Vollrath, D., Davis, R. W., et al. (1988) · Molecular and Cellular Biology · doi:10.1128/mcb.8.4.1469-1473.1988 · Cited by 64 · see citing works
Lieb, M. (1981) · Molecular and General Genetics MGG · doi:10.1007/bf00352506 · Cited by 62 · see citing works
The 52-protein subunit of T4 DNA topoisomerase is homologous to the gyrA-protein of gyrase.
Huang, W. M. (1986) · PubMed · Cited by 50 · see citing works
Steensma, H. Y., Crowley, J. C., & Kaback, D. B. (1987) · Molecular and Cellular Biology · doi:10.1128/mcb.7.1.410 · Cited by 48 · see citing works
Kunz, B. A., Kohalmi, L., Kang, X. L., & Magnusson, K. A. (1990) · Journal of Bacteriology · doi:10.1128/jb.172.6.3009-3014.1990 · Cited by 44 · see citing works
Mutagenic effects of thymine dimers in bacteriophage T4
Meistrich, M. L., & Drake, J. W. (1972) · Journal of Molecular Biology · doi:10.1016/s0022-2836(72)80009-3 · Cited by 43 · see citing works
Self-citationUltraviolet Mutagenesis in Bacteriophage T4 I. Irradiation of Extracellular Phage Particles
Drake, J. W. (1966) · Journal of Bacteriology · doi:10.1128/jb.91.5.1775-1780.1966 · Cited by 43 · see citing works
Self-citationMutagen specificity and position effects on mutation in T4rII nonsense sites
Ronen, A., & Rahat, A. (1976) · Mutation research. Fundamental and molecular mechanisms of mutagenesis · doi:10.1016/0027-5107(76)90258-x · Cited by 43 · see citing works
Analysis of yeast retrotransposon Ty insertions at the CAN1 locus.
Wilke, C. M., Heidler, S., Brown, N., et al. (1989) · Genetics · doi:10.1093/genetics/123.4.655 · Cited by 42 · see citing works
Forward and reverse mutation in a histidine-requiring strain of Escherichia coli.
Lieb, M. (1951) · Genetics · doi:10.1093/genetics/36.5.460 · Cited by 31 · see citing works
Sequences and studies of bacteriophage T4 rII mutants
Shinedling, S. T., Singer, B. S., Gayle, M. A., et al. (1987) · Journal of Molecular Biology · doi:10.1016/0022-2836(87)90176-8 · Cited by 28 · see citing works
Sequence and structure of mtr, an amino acid transport gene of Neurospora crassa
Koo, K., & Stuart, W. D. (1991) · Genome · doi:10.1139/g91-098 · Cited by 28 · see citing works
Ultraviolet Mutagenesis in Bacteriophage T4 II. Photoreversal of Mutational Lesions
Drake, J. W. (1966) · Journal of Bacteriology · doi:10.1128/jb.92.1.144-147.1966 · Cited by 22 · see citing works
Self-citation[Defective lysogenic bacteria. II. Physiological types resulting from prophage mutations].
Jacob, F., Fuerst, R. G., & El, W. (1957) · PubMed · Cited by 22 · see citing works
Coleman, K. G., Steensma, H. Y., Kaback, D. B., & Pringle, J. R. (1986) · Molecular and Cellular Biology · doi:10.1128/mcb.6.12.4516-4525.1986 · Cited by 19 · see citing works
MUTATORS IN SACCHAROMYCES CEREVISIAE: MUT1–1, MUT1–2 AND MUT2–1
Gottlieb, D. J. C., & von Borstel, R. C. (1976) · Genetics · doi:10.1093/genetics/83.4.655 · Cited by 17 · see citing works
Modulation of mutation rates in bacteriophage T4 by a base-pair change a dozen nucleotides removed
Sugino, A., & Drake, J. W. (1984) · Journal of Molecular Biology · doi:10.1016/0022-2836(84)90422-4 · Cited by 17 · see citing works
Self-citationCRYPTIC MUTANTS OF BACTERIOPHAGE T4
Koch, R. E., & Drake, J. W. (1970) · Genetics · doi:10.1093/genetics/65.3.379 · Cited by 17 · see citing works
Self-citationSteensma, H. Y., Crowley, J. C., & Kaback, D. B. (1987) · Molecular and Cellular Biology · doi:10.1128/mcb.7.1.410-419.1987 · Cited by 15 · see citing works
Daegelen, P., & Brody, E. N. (1990) · Genetics · doi:10.1093/genetics/125.2.237 · Cited by 10 · see citing works
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Drake, J. W., Charlesworth, B., Charlesworth, D., & Crow, J. F. (1998) · Genetics · doi:10.1093/genetics/148.4.1667 · Cited by 1,932 · see citing works
Self-citationGenome evolution and adaptation in a long-term experiment with Escherichia coli
Barrick, J. E., Yu, D. S., Yoon, S. H., Jeong, H., Oh, T. K., Schneider, D., Lenski, R. E., & Kim, J. F. (2009) · Nature · doi:10.1038/nature08480 · Cited by 1,184 · see citing works
Mutation rates among RNA viruses
Drake, J. W., & Holland, J. J. (1999) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.96.24.13910 · Cited by 1,143 · see citing works
Self-citationBlount, Z. D., Borland, C. Z., & Lenski, R. E. (2008) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0803151105 · Cited by 840 · see citing works
Adaptive laboratory evolution—Principles and applications for biotechnology
Dragosits, M., & Mattanovich, D. (2013) · Microbial Cell Factories · doi:10.1186/1475-2859-12-64 · Cited by 827 · see citing works
Kunkel, T. A. (2004) · Journal of Biological Chemistry · doi:10.1074/jbc.r400006200 · Cited by 754 · see citing works
Lee, H., Popodi, E., Tang, H., & Foster, P. L. (2012) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1210309109 · Cited by 681 · see citing works
Eukaryotic Translesion Polymerases and Their Roles and Regulation in DNA Damage Tolerance
Waters, L. S., Minesinger, B. K., Wiltrout, M. E., D'Souza, S., Woodruff, R. V., & Walker, G. C. (2009) · Microbiology and Molecular Biology Reviews · doi:10.1128/mmbr.00034-08 · Cited by 591 · see citing works
Long-term survival during stationary phase: evolution and the GASP phenotype
Finkel, S. E. (2006) · Nature Reviews Microbiology · doi:10.1038/nrmicro1340 · Cited by 508 · see citing works
Bacterial contingency loci: the role of simple sequence DNA repeats in bacterial adaptation
Moxon, R., Bayliss, C., & Hood, D. (2006) · Annual Review of Genetics · doi:10.1146/annurev.genet.40.110405.090442 · Cited by 438 · see citing works
The emergence of antibiotic resistance by mutation
Woodford, N., & Ellington, M. J. (2007) · Clinical Microbiology and Infection · doi:10.1111/j.1469-0691.2006.01492.x · Cited by 417 · see citing works
Bet Hedging in Yeast by Heterogeneous, Age-Correlated Expression of a Stress Protectant
Levy, S. F., Ziv, N., & Siegal, M. L. (2012) · PLoS Biology · doi:10.1371/journal.pbio.1001325 · Cited by 371 · see citing works
Estimating the Per-Base-Pair Mutation Rate in the Yeast <i>Saccharomyces cerevisiae</i>
Lang, G. I., & Murray, A. W. (2008) · Genetics · doi:10.1534/genetics.107.071506 · Cited by 344 · see citing works
Methods for determining spontaneous mutation rates
Foster, P. L. (2006) · Methods in Enzymology · doi:10.1016/s0076-6879(05)09012-9 · Cited by 302 · see citing works
Base selection, proofreading, and mismatch repair during DNA replication in Escherichia coli.
Schaaper, R. M. (1993) · Journal of Biological Chemistry · doi:10.1016/s0021-9258(20)80446-3 · Cited by 305 · see citing works
Stress Alters Rates and Types of Loss of Heterozygosity in Candida albicans
Forche, A., Abbey, D., Pisithkul, T., Weinzierl, M. A., Ringstrom, T., Bruck, D., Petersen, K., & Berman, J. (2011) · mBio · doi:10.1128/mbio.00129-11 · Cited by 234 · see citing works
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Cornejo, O. E., Lefébure, T., Pavinski Bitar, P. D., Lang, P., Richards, V. P., Eilertson, K., Do, T., Beighton, D., Zeng, L., Ahn, S.-J., et al. (2013) · Molecular Biology and Evolution · doi:10.1093/molbev/mss278 · Cited by 198 · see citing works
Lehman, J., Clune, J., Misevic, D., Adami, C., Altenberg, L., Beaulieu, J., Bentley, P. J., Bernard, S., Beslon, G., Bryson, D. M., et al. (2020) · Artificial Life · doi:10.1162/artl_a_00319 · Cited by 181 · see citing works
Lee, D.-H., & Palsson, B. Ø. (2010) · Applied and Environmental Microbiology · doi:10.1128/aem.00373-10 · Cited by 160 · see citing works
Ryall, B., Eydallin, G., & Ferenci, T. (2012) · Microbiology and Molecular Biology Reviews · doi:10.1128/mmbr.05028-11 · Cited by 160 · see citing works
Ivarsson, Y., Arnold, R., McLaughlin, M., Nim, S., Joshi, R., Ray, D., Liu, B., Teyra, J., Pawson, T., Moffat, J., et al. (2014) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1312296111 · Cited by 135 · see citing works
Lenski, R. E., Mongold, J. A., Sniegowski, P. D., Travisano, M., Vasi, F., Gerrish, P. J., & Schmidt, T. M. (1998) · Antonie van Leeuwenhoek · doi:10.1023/a:1000675521611 · Cited by 152 · see citing works
Lang, G. I., Parsons, L., & Gammie, A. E. (2013) · G3 Genes Genomes Genetics · doi:10.1534/g3.113.006429 · Cited by 107 · see citing works
Potential role of phenotypic mutations in the evolution of protein expression and stability
Goldsmith, M., & Tawfik, D. S. (2009) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.0809506106 · Cited by 81 · see citing works
The role of the<i>mutT</i>gene of<i>Escherichia coli</i>in maintaining replication fidelity
Fowler, R. G., & Schaaper, R. M. (1997) · FEMS Microbiology Reviews · doi:10.1111/j.1574-6976.1997.tb00344.x · Cited by 100 · see citing works
Phase Diagrams of Quasispecies Theory with Recombination and Horizontal Gene Transfer.
Park, J.-M., & Deem, M. W. (2007) · Physical Review Letters · doi:10.1103/physrevlett.98.058101 · Cited by 69 · see citing works
DNA precursor asymmetries, replication fidelity, and variable genome evolution
Mathews, C. K., & Ji, J. (1992) · BioEssays · doi:10.1002/bies.950140502 · Cited by 69 · see citing works
Mechanisms of genetic variation in polioviruses
Savolainen‐Kopra, C., & Blomqvist, S. (2010) · Reviews in Medical Virology · doi:10.1002/rmv.663 · Cited by 67 · see citing works
Quan, S., Ray, J. C. J., Kwota, Z., Duong, T., Balázsi, G., Cooper, T. F., & Monds, R. D. (2012) · PLoS Genetics · doi:10.1371/journal.pgen.1002444 · Cited by 59 · see citing works
Massey, S. (2015) · Life · doi:10.3390/life5021301 · Cited by 38 · see citing works
“This analysis is an extension the observed inverse relationship between μ and genome size in a range of microbes [163].”
BackgroundBebenek, A., Carver, G. T., Dressman, H. K., Kadyrov, F. A., Haseman, J. K., Petrov, V., Konigsberg, W. H., Karam, J. D., & Drake, J. W. (2002) · Genetics · doi:10.1093/genetics/162.3.1003 · Cited by 39 · see citing works
Self-citationSuppressors of Escherichia coli mutT: antimutators for DNA replication errors
Schaaper, R. M. (1996) · Mutation research. Fundamental and molecular mechanisms of mutagenesis · doi:10.1016/0027-5107(95)00086-0 · Cited by 27 · see citing works
Mah, J. C., Lohmueller, K. E., & Garud, N. R. (2025) · Molecular Biology and Evolution · doi:10.1093/molbev/msaf010 · Cited by 11 · see citing works
- Authors
- Drake, J. W.
- Affiliations
- National Institutes of Health (US)
- Corresponding author
- Drake, J W
- ORCID
- Drake, J W
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 1991-08-15
- Volume
- 88
- Issue
- 16
- Pages
- 7160-7164
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC52253
- OpenAlex
- W1977852064
- Cited by
- 1,199
- References
- 56
- Citations by year
- 2026: 20 · 2025: 19 · 2024: 50 · 2023: 47 · 2022: 26 · 2021: 41 · 2020: 41 · 2019: 38 · 2018: 50 · 2017: 45 · 2016: 41 · 2015: 38 · 2014: 53 · 2013: 37 · 2012: 51
- FWCI
- 9.14
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
- Keywords
- spontaneous mutation rate, genome size, haploid organisms, bacteriophages, yeast, filamentous fungi, mutation rate evolution
- MeSH terms
- Base Composition, Coliphages, DNA, Bacterial, DNA, Fungal, DNA, Viral, Escherichia coli, Biological Evolution, Genes, Bacterial, Genes, Fungal, Genes, Viral, Mutation, Neurospora crassa, Bacteriophage lambda, Saccharomyces cerevisiae, Species Specificity, T-Phages
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