David Demory
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View article: Genomic analysis of <i>Ostreococcus tauri</i>-infecting viruses reveals a hypervariable region associated with host–virus interactions
Genomic analysis of <i>Ostreococcus tauri</i>-infecting viruses reveals a hypervariable region associated with host–virus interactions Open
While the genus Prasinovirus , known to infect prasinophyte green algae (class Mamiellophyceae), is abundant in the oceans, the genetic mechanisms governing the ecology and (co)evolution of these viruses remain poorly understood. In this s…
View article: Coexistence of Photosynthetic Marine Microorganisms, Viruses, and Grazers: Toward Integration in Ocean Ecosystem Models
Coexistence of Photosynthetic Marine Microorganisms, Viruses, and Grazers: Toward Integration in Ocean Ecosystem Models Open
Photosynthetic microorganisms are responsible for primary production at the base of the marine food web that impacts ocean biogeochemistry and ecological interactions. The growth of these microorganisms is balanced by mortality processes, …
View article: Density-dependent inhibition and higher-order interactions enable coexistence in phage-bacteria community dynamics
Density-dependent inhibition and higher-order interactions enable coexistence in phage-bacteria community dynamics Open
Diverse phage-bacteria communities coexist at high densities in environmental, agricultural, and human-associated microbiomes. Phage-bacteria coexistence is often attributed to coevolutionary processes mediated by complex, pairwise infecti…
View article: Temperature-driven biogeography of marine giant viruses infecting picoeukaryotes <i>Micromonas</i>
Temperature-driven biogeography of marine giant viruses infecting picoeukaryotes <i>Micromonas</i> Open
Climate shapes the biogeography of microbial and viral communities in the ocean. Among abiotic factors, temperature is one of the main drivers of microbial community distribution. However, we lack knowledge on how temperature shapes the li…
View article: Cold Surface Waters of the Sub‐Antarctic Pacific Ocean Support High Cyanophage Abundances and Infection Levels
Cold Surface Waters of the Sub‐Antarctic Pacific Ocean Support High Cyanophage Abundances and Infection Levels Open
Cyanobacterial distributions are shaped by abiotic factors including temperature, light and nutrient availability as well as biotic factors such as grazing and viral infection. In this study, we investigated the abundances of T4‐like and T…
View article: Accounting for cellular-level variation in lysis: implications for virus–host dynamics
Accounting for cellular-level variation in lysis: implications for virus–host dynamics Open
Viral impacts on microbial populations depend on interaction phenotypes—including viral traits spanning the adsorption rate, latent period, and burst size. The latent period is a key viral trait in lytic infections. Defined as the time from…
View article: Accounting for Cellular-Level Variation in Lysis: Implications for Virus-Host Dynamics
Accounting for Cellular-Level Variation in Lysis: Implications for Virus-Host Dynamics Open
Viral impacts on microbial populations depend on interaction phenotypes - including viral traits spanning adsorption rate, latent period, and burst size. The latent period is a key viral trait in lytic infections. Defined as the time from …
View article: Emergence and maintenance of stable coexistence during a long-term multicellular evolution experiment
Emergence and maintenance of stable coexistence during a long-term multicellular evolution experiment Open
The evolution of multicellular life spurred evolutionary radiations, fundamentally changing many of Earth’s ecosystems. Yet little is known about how early steps in the evolution of multicellularity transform eco-evolutionary dynamics, e.g…
View article: Global Phylogeography of Marine <i>Synechococcus</i> in Coastal Areas Reveals Strong Community Shifts
Global Phylogeography of Marine <i>Synechococcus</i> in Coastal Areas Reveals Strong Community Shifts Open
Synechococcus is the second most abundant phytoplanktonic organism on Earth, and its wide genetic diversity allowed it to colonize all the oceans except for polar waters, with different clades colonizing distinct oceanic niches. In recent …
View article: Global phylogeography of marine <i>Synechococcus</i> in coastal areas reveals strikingly different communities than in the open ocean
Global phylogeography of marine <i>Synechococcus</i> in coastal areas reveals strikingly different communities than in the open ocean Open
Marine Synechococcus comprise a numerically and ecologically prominent phytoplankton group, playing a major role in both carbon cycling and trophic networks in all oceanic regions except in the polar oceans. Despite their high abundance in…
View article: Correction for Demory et al., “Linking Light-Dependent Life History Traits with Population Dynamics for <i>Prochlorococcus</i> and Cyanophage”
Correction for Demory et al., “Linking Light-Dependent Life History Traits with Population Dynamics for <i>Prochlorococcus</i> and Cyanophage” Open
The original publication of this paper erroneously included a factor of 2 in the denominator rather than the numerator when representing the state transitions corresponding to intracellular transitions from infection to lysis in the nonlin…
View article: Disentangling top-down drivers of mortality underlying diel population dynamics of<i>Prochlorococcus</i>in the North Pacific Subtropical Gyre
Disentangling top-down drivers of mortality underlying diel population dynamics of<i>Prochlorococcus</i>in the North Pacific Subtropical Gyre Open
Photosynthesis fuels primary production at the base of marine food webs. Yet, in many surface ocean ecosystems, diel-driven primary production is tightly coupled to daily loss. This tight coupling raises the question: which top-down driver…
View article: A thermal trade‐off between viral production and degradation drives virus‐phytoplankton population dynamics
A thermal trade‐off between viral production and degradation drives virus‐phytoplankton population dynamics Open
Marine viruses interact with microbial hosts in dynamic environments shaped by variation in abiotic factors, including temperature. However, the impacts of temperature on viral infection of phytoplankton are not well understood. Here we co…
View article: A thermal trade-off between viral production and degradation drives phytoplankton-virus population dynamics
A thermal trade-off between viral production and degradation drives phytoplankton-virus population dynamics Open
Marine viruses interact with their microbial hosts in dynamic environments shaped by variations in abiotic factors, including temperature. However, the impacts of temperature on viral infection of phytoplankton are not well understood. Her…
View article: Intervention Serology and Interaction Substitution: Modeling the Role of ‘Shield Immunity’ in Reducing COVID-19 Epidemic Spread
Intervention Serology and Interaction Substitution: Modeling the Role of ‘Shield Immunity’ in Reducing COVID-19 Epidemic Spread Open
The COVID-19 pandemic has precipitated a global crisis, with more than 690,000 confirmed cases and more than 33,000 confirmed deaths globally as of March 30, 2020 [1–4]. At present two central public health control strategies have emerged:…
View article: Linking Light-Dependent Life History Traits with Population Dynamics for <i>Prochlorococcus</i> and Cyanophage
Linking Light-Dependent Life History Traits with Population Dynamics for <i>Prochlorococcus</i> and Cyanophage Open
The cyanobacterium Prochlorococcus is an essential member of global ocean ecosystems. Light rhythms drive Prochlorococcus photosynthesis, ecology, and interactions with potentially lethal viruses. At present, the impact of light on Prochlo…
View article: Unveiling membrane thermoregulation strategies in marine picocyanobacteria
Unveiling membrane thermoregulation strategies in marine picocyanobacteria Open
Summary The wide latitudinal distribution of marine Synechococcus cyanobacteria partly relies on the differentiation of lineages adapted to distinct thermal environments. Membranes are highly thermosensitive cell components, and the abilit…
View article: Linking light-dependent life history traits with population dynamics for<i>Prochlorococcus</i>and cyanophage
Linking light-dependent life history traits with population dynamics for<i>Prochlorococcus</i>and cyanophage Open
Prochlorococcus grow in diurnal rhythms driven by diel cycles. Their ecology depends on light, nutrients, and top-down mortality processes including lysis by viruses. Cyanophage, viruses that infect cyanobacteria, are also impacted by ligh…
View article: Picoeukaryotes of the <i>Micromonas</i> genus: sentinels of a warming ocean
Picoeukaryotes of the <i>Micromonas</i> genus: sentinels of a warming ocean Open
Photosynthetic picoeukaryotesx in the genus Micromonas show among the widest latitudinal distributions on Earth, experiencing large thermal gradients from poles to tropics. Micromonas comprises at least four different species often found i…
View article: How do microalgae perceive light in a high-rate pond? Towards more realistic Lagrangian experiments
How do microalgae perceive light in a high-rate pond? Towards more realistic Lagrangian experiments Open
Hydrodynamics in a high-rate production reactor for microalgae cultivation affects the light history perceived by cells. The interplay between cell movement and medium turbidity leads to a complex light pattern, whose forcing effects on ph…
View article: Supplementary material from "How do microalgae perceive light in a high-rate pond? Towards more realistic Lagrangian experiments"
Supplementary material from "How do microalgae perceive light in a high-rate pond? Towards more realistic Lagrangian experiments" Open
Hydrodynamics in a high-rate production reactor for microalgae cultivation affects the light history perceived by cells. The interplay between cell movement and medium turbidity leads to a complex light pattern, whose forcing effects on ph…
View article: Experimental data from How do microalgae perceive light in a high-rate pond? Towards more realistic Lagrangian experiments
Experimental data from How do microalgae perceive light in a high-rate pond? Towards more realistic Lagrangian experiments Open
Experimental data obtained in the Lagrangian experiment
View article: Temperature is a key factor in <i>Micromonas</i>–virus interactions
Temperature is a key factor in <i>Micromonas</i>–virus interactions Open
The genus Micromonas comprises phytoplankton that show among the widest latitudinal distributions on Earth, and members of this genus are recurrently infected by prasinoviruses in contrasted thermal ecosystems. In this study, we assessed h…