Factors Promoting the Recruitment of Benthic Cyanobacteria Resting Stages: A Review

Torres, Gian Salazar; Adámek, Zdeněk

doi:10.14798/71.4.696

Cited by 6 publications

(1 citation statement)

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“…While our experiments provide experimental control, they also bear similarity to naturally occurring seed banks where dormant individuals reside in patches that are spatially distinct from metabolically active individuals, such as plant seeds in soils or phytoplankton cysts in sediments (Moriuchi et al . 2000; Salazar Torres & Adámek 2013; Ellegaard & Ribeiro 2018).…”

Section: Discussionmentioning

confidence: 99%

Coevolution with a seed bank

Schwartz¹,

Shoemaker²,

Măgălie³

et al. 2023

Preprint

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Dormancy is as an adaptation to living in fluctuating environments. It can also influence species interactions, for example, by providing organisms with a refuge from predators and parasites. Here we test the hypothesis that dormancy generates a seed bank of protected individuals that can modify antagonistic coevolutionary dynamics. We experimentally evolved a spore-forming bacterial host along with a phage parasite that can infect active but not dormant cells. Seed banks buffered population dynamics against phage infection and retained phenotypic diversity that was otherwise lost to directional selection. By storing genetic diversity, seed banks also altered the distribution of host alleles, which contributed to dampened coevolutionary dynamics. Our findings demonstrate that dormancy generates a seed bank that can modify the eco-evolutionary outcomes of host-parasite systems.

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Section: Discussionmentioning

confidence: 99%

Coevolution with a seed bank

Schwartz¹,

Shoemaker²,

Măgălie³

et al. 2023

Preprint

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Bacteria-phage coevolution with a seed bank

et al. 2023

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Dormancy is an adaptation to living in fluctuating environments. It allows individuals to enter a reversible state of reduced metabolic activity when challenged by unfavorable conditions. Dormancy can also influence species interactions by providing organisms with a refuge from predators and parasites. Here we test the hypothesis that, by generating a seed bank of protected individuals, dormancy can modify the patterns and processes of antagonistic coevolution. We conducted a factorially designed experiment where we passaged a bacterial host (Bacillus subtilis) and its phage (SPO1) in the presence versus absence of a seed bank consisting of dormant endospores. Owing in part to the inability of phages to attach to spores, seed banks stabilized population dynamics and resulted in minimum host densities that were 30-fold higher compared to bacteria that were unable to engage in dormancy. By supplying a refuge to phage-sensitive strains, we show that seed banks retained phenotypic diversity that was otherwise lost to selection. Dormancy also stored genetic diversity. After characterizing allelic variation with pooled population sequencing, we found that seed banks retained twice as many host genes with mutations, whether phages were present or not. Based on mutational trajectories over the course of the experiment, we demonstrate that seed banks can dampen bacteria-phage coevolution. Not only does dormancy create structure and memory that buffers populations against environmental fluctuations, it also modifies species interactions in ways that can feed back onto the eco-evolutionary dynamics of microbial communities.

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Characterization of phytoplankton seed banks in the sediments of a drinking water reservoir

Rolland

Vincent

2014

Lake and Reservoir Management

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Factors Promoting the Recruitment of Benthic Cyanobacteria Resting Stages: A Review

Cited by 6 publications

References 0 publications

Coevolution with a seed bank

Coevolution with a seed bank

Bacteria-phage coevolution with a seed bank

Characterization of phytoplankton seed banks in the sediments of a drinking water reservoir

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