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Cited by 527

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Uncultured soil bacteria are a reservoir of new antibiotic resistance genes

Riesenfeld, Christian S., Goodman, Robert M., Handelsman, Jo·2004·Environmental Microbiology

Abstract

Summary: Antibiotic resistance genes are typically isolated by cloning from cultured bacteria or by polymerase chain reaction (PCR) amplification from environmental samples. These methods do not access the potential reservoir of undiscovered antibiotic resistance genes harboured by soil bacteria because most soil bacteria are not cultured readily, and PCR detection of antibiotic resistance genes depends on primers that are based on known genes. To explore this reservoir, we isolated DNA directly from soil samples, cloned the DNA and selected for clones that expressed antibiotic resistance in Escherichia coli . We constructed four libraries that collectively contain 4.1 gigabases of cloned soil DNA. From these and two previously reported libraries, we identified nine clones expressing resistance to aminoglycoside antibiotics and one expressing tetracycline resistance. Based on the predicted amino acid sequences of the resistance genes, the resistance mechanisms include efflux of tetracycline and inactivation of aminoglycoside antibiotics by phosphorylation and acetylation. With one exception, all the sequences are considerably different from previously reported sequences. The results indicate that soil bacteria are a reservoir of antibiotic resistance genes with greater genetic diversity than previously accounted for, and that the diversity can be surveyed by a culture‐independent method.

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  • Prokaryotes: The unseen majority

    Whitman, W. B., Coleman, D. C., & Wiebe, W. J. (1998) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.95.12.6578 · Cited by 4,871 · cited 1×

    “…cultured on standard laboratory media (Giovannoni et al ., 1990; Ward et al ., 1990; Amann et al ., 1995; Suzuki et al ., 1997; Hugenholtz et al ., 1998), and the diversity of the uncultured majority is vast (Head et al ., 1998; Torsvik et al ., 1998; Whitman et al ., 1998; Béjà et al ., 2002).”
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Metadata

Authors
Riesenfeld, C. S., Goodman, R. M., & Handelsman, J.
Venue
Environmental Microbiology
Publisher
Wiley
Published
2004-08-11
Volume
6
Issue
9
Pages
981-989
ISSN
  • 1462-2912 (ISSN-L)
  • 1462-2920
OpenAlex
W2165524029
Cited by
527
References
1
FWCI
8.45
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Uncultured soil bacteria are a reservoir of new antibiotic resistance genes. https://app.cochat.ai/papers/10.1111/j.1462-2920.2004.00664.x
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Riesenfeld, C. S., Goodman, R. M., & Handelsman, J. (2004). Uncultured soil bacteria are a reservoir of new antibiotic resistance genes. Environmental Microbiology. https://doi.org/10.1111/j.1462-2920.2004.00664.x

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