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Diversity and metabolic energy in bacteria.

ABSTRACT: Why are some groups of bacteria more diverse than others? We hypothesise that the metabolic energy available to a bacterial functional group (a biogeochemical group or 'guild') has a role in such a group's taxonomic diversity. We tested this hypothesis by looking at the metacommunity diversity of functional groups in multiple biomes. We observed a positive correlation between estimates of a functional group's diversity and their metabolic energy yield. Moreover, the slope of that relationship was similar in all biomes. These findings could imply the existence of a universal mechanism controlling the diversity of all functional groups in all biomes in the same way. We consider a variety of possible explanations from the classical (environmental variation) to the 'non-Darwinian' (a drift barrier effect). Unfortunately, these explanations are not mutually exclusive, and a deeper understanding of the ultimate cause(s) of bacterial diversity will require us to determine if, and how, the key parameters in population genetics (effective population size, mutation rate and selective gradients) vary between functional groups and with environmental conditions: this is a difficult task.

SUBMITTER: Allen B

PROVIDER: S-EPMC10214464 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature

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Diversity and metabolic energy in bacteria.

Allen Ben B Gonzalez-Cabaleiro Rebeca R Ofiteru Irina Dana ID Øvreås Lise L Sloan William T WT Swan Donna D Curtis Thomas T

FEMS microbiology letters 20230101

Why are some groups of bacteria more diverse than others? We hypothesize that the metabolic energy available to a bacterial functional group (a biogeochemical group or 'guild') has a role in such a group's taxonomic diversity. We tested this hypothesis by looking at the metacommunity diversity of functional groups in multiple biomes. We observed a positive correlation between estimates of a functional group's diversity and their metabolic energy yield. Moreover, the slope of that relationship wa ...[more]

PMID: 37193662

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Dataset Information

Diversity and metabolic energy in bacteria.

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Diversity and metabolic energy in bacteria.

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