Sequencing Effort Dictates Gene Discovery in Marine Microbial Metagenomes
AuthorsDuarte, Carlos M.
Pearman, John K.
Eguíluz, V. M.
Acinas, Silvia G.
Gasol, Josep M.
Bajic, Vladimir B.
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Marine Science Program
Red Sea Research Center (RSRC)
Computational Bioscience Research Center (CBRC)
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Applied Mathematics and Computational Science Program
Embargo End Date2021-08-03
Permanent link to this recordhttp://hdl.handle.net/10754/664543
MetadataShow full item record
AbstractMassive metagenomic sequencing combined with gene prediction methods were previously used to compile the gene catalogue of ocean and host-associated microbes. Global expeditions conducted over the past 15 years have sampled to ocean to build a catalogue of genes from pelagic microbes. Here we undertook a large sequencing effort of a perturbed Red Sea plankton community to uncover that the rate of gene discovery increases continuously with sequencing effort, with no indication that the retrieved 2.83 million non-redundant (complete) genes predicted from the experiment represented a nearly complete inventory of the genes present in the sampled community (i.e. no evidence of saturation). The underlying reason is the Pareto-like distribution of the abundance of genes in the plankton community, resulting in a very long tail of millions of genes present at remarkably low abundances, which can only be retrieved through massive sequencing. Microbial metagenomic projects retrieve variable number of unique genes per Tera base-pair (Tbp), with a median value of 14.7 million unique genes per Tbp sequenced across projects. The increase in the rate of gene discovery in microbial metagenomes with sequencing effort implies that there is ample room for new gene discovery in further ocean and holobiont sequencing studies This article is protected by copyright. All rights reserved.
CitationDuarte, C. M., Ngugi, D. K., Alam, I., Pearman, J., Kamau, A., Eguiluz, V. M., … Irigoien, X. (2020). Sequencing Effort Dictates Gene Discovery in Marine Microbial Metagenomes. Environmental Microbiology. doi:10.1111/1462-2920.15182
CollectionsArticles; Biological and Environmental Sciences and Engineering (BESE) Division; Red Sea Research Center (RSRC); Bioscience Program; Marine Science Program; Applied Mathematics and Computational Science Program; Computational Bioscience Research Center (CBRC); Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
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