Frontiers in Microbiology · 2022

Trait-trait relationships and tradeoffs vary with genome size in prokaryotes

Beier S., Werner J., Bouvier T., Mouquet N., Violle C.

doi.org/10.3389/fmicb.2022.985216
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Key Message

We report genomic traits linked to prokaryote life history and address conflicting trait correlation findings by examining trait-trait variation across 11 genomic traits from ~18,000 genomes.

We find two largely orthogonal resistance and resilience axes, with resilience overlapping an oligotrophic-copiotrophic axis in free-living taxa with large effective population sizes. Resistance and resilience traits were positively related below ~5 Mbp genomes but negatively related above this threshold, indicating habitat-dependent tradeoffs, since genome size distributions differ across habitats, which may explain conflicting reports and preclude a globally consistent mapping onto the competitor-stress-tolerator-ruderal (CSR) framework.

All traits showed significant phylogenetic signal, supporting use of this trait table to extrapolate genomic traits from marker genes and empirically test community assembly under the proposed resistance-resilience framework.

Figure from Beier et al. 2022
Principal component analysis of genomic traits from 17,856 sequenced prokaryotic genomes (8,847 species) available through the JGI/IMG database and averaged at the species level; analyses included the 5,823 species with complete trait information (Supplementary Table S1). Resistance traits are shown in black, resilience traits in orange, and unassigned traits (%GC and prophages) in gray; %HGT was log(x + 0.001)-transformed, and codon usage bias (F) is shown instead of inferred generation time because it is robustly defined for all genomes.
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