Journal
ISME JOURNAL
Volume 13, Issue 8, Pages 2125-2128Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41396-019-0410-3
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Funding
- NSF [OCE-1559002, OCE-1848576, DEB-1457160]
- U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research (BER) [DE-SC0016410]
- U.S. Department of Energy (DOE) [DE-SC0016410] Funding Source: U.S. Department of Energy (DOE)
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vThe paradigm that only 1% of microbes are culturable has had a profound impact on our understanding of microbial ecology and is still a major motivation for mostly using molecular tools to characterize microbial communities. However, this point is often expressed vaguely, suggesting that some scientists have different interpretations of the paradigm. In addition, there have been substantial advances in cultivation techniques suggesting that this paradigm may no longer be correct. To quantify bacterial culturability across six major biomes, I found that the median 16S rRNA similarity of bacteria to known cultured relatives was 97.3 +/- 2.3% (s.d.). Furthermore, 52.0 +/- 24% of sequences and 34.9 +/- 23% of taxa (defined as >97% similar) had a closely related cultured relative. Thus, many cells and taxa across environments are culturable with known techniques, suggesting that the 1% paradigm is no longer correct.
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