Warmer temperatures favor slower-growing bacteria in natural marine communities

Abreu, Clare I.; Bello, Martina Dal; Bunse, Carina; Pinhassi, Jarone; Gore, Jeff

doi:10.1101/2022.07.13.499956

Cited by 9 publications

(13 citation statements)

References 80 publications

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“…We have also provided quantitative evidence with the hypothesis that a single ocean-wide neutral metacommunity, where the differences among local sampled stations are attributed solely to different sampling efforts, does not hold, at least for this specific plankton group. In particular, the analysis of the deviations between the predicted and the observed richness reveals the signature of biogeographical patterns, with ΔS being substantially correlated with temperature (46), as shown in fig. S8.…”

Section: Discussionmentioning

confidence: 90%

Deviation from neutral species abundance distributions unveils geographical differences in the structure of diatom communities

Pigani,

Mele,

Campese

et al. 2024

Sci. Adv.

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In recent years, the application of metagenomics techniques has advanced our understanding of plankton communities and their global distribution. Despite this progress, the relationship between the abundance distribution of diatom species and varying marine environmental conditions remains poorly understood. This study, leveraging data from the Tara Oceans expedition, tests the hypothesis that diatoms in sampled stations display a consistent species abundance distribution structure, as though they were sampled from a single ocean-wide metacommunity. Using a neutral sampling theory, we thus develop a framework to estimate the structure and diversity of diatom communities at each sampling station given the shape of the species abundance distribution of the metacommunity and the information of a reference station. Our analysis reveals a substantial temperature gradient in the discrepancies between predicted and observed biodiversity across the sampled stations. These findings challenge the hypothesis of a single neutral metacommunity, indicating that environmental differences substantially influence both the composition and structure of diatom communities.

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Section: Discussionmentioning

confidence: 90%

Deviation from neutral species abundance distributions unveils geographical differences in the structure of diatom communities

Pigani,

Mele,

Campese

et al. 2024

Sci. Adv.

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“…For example, selection might favour relatively rapid development (and therefore high metabolic rates [31,83–85]) in cold environments (e.g. [86]) to reduce otherwise long generation times. Alternatively, or in addition, selection might favour low metabolic rates at high temperatures to increase otherwise low population carrying capacities [87–90].…”

Section: Discussionmentioning

confidence: 99%

Temperature and nutrition do not interact to shape the evolution of metabolic rate

Alton,

Kutz,

Bywater

et al. 2024

Phil. Trans. R. Soc. B

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Metabolic cold adaptation, or Krogh's rule, is the controversial hypothesis that predicts a monotonically negative relationship between metabolic rate and environmental temperature for ectotherms living along thermal clines measured at a common temperature. Macrophysiological patterns consistent with Krogh's rule are not always evident in nature, and experimentally evolved responses to temperature have failed to replicate such patterns. Hence, temperature may not be the sole driver of observed variation in metabolic rate. We tested the hypothesis that temperature, as a driver of energy demand, interacts with nutrition, a driver of energy supply, to shape the evolution of metabolic rate to produce a pattern resembling Krogh's rule. To do this, we evolved replicate lines of Drosophila melanogaster at 18, 25 or 28°C on control, low-calorie or low-protein diets. Contrary to our prediction, we observed no effect of nutrition, alone or interacting with temperature, on adult female and male metabolic rates. Moreover, support for Krogh's rule was only in females at lower temperatures. We, therefore, hypothesize that observed variation in metabolic rate along environmental clines arises from the metabolic consequences of environment-specific life-history optimization, rather than because of the direct effect of temperature on metabolic rate. This article is part of the theme issue ‘The evolutionary significance of variation in metabolic rates’.

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“…These results are consistent with climate conditions affecting slow-growing microbes more, and fungal communities having a higher proportion of very slow-growing microbes compared to bacteria, thus showing greater change. While some literature suggests slow-growing microbes have lower relative fitness under more extreme climate conditions (Sabath et al 2013), slow-growing microbes may also benefit from climate change relative to faster-growing microbes, especially if heat and drought make resources scarce or reduce the cost of slower growth (Konstantinidis & Tiedje 2004; Abreu et al 2023).…”

Section: Discussionmentioning

confidence: 99%

Resistance and resilience of soil microbiomes under climate change

Boyle,

Murphy,

Ensminger

et al. 2023

Preprint

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Soil microbiomes play key roles in plant productivity and nutrient cycling, and we need to understand whether and how they will withstand the effects of global climate change. We exposed in situ soil microbial communities to multiple rounds of heat, drought, or both treatments, and profiled microbial communities with 16S rRNA and ITS amplicon sequencing during and after these climatic changes, and then tested how domain and symbiotic lifestyle affected response. Fungal community composition strongly shifted due to drought and its legacy. In contrast, bacterial community composition resisted change during the experiment, but still was affected by the legacy of drought. We identified fungal and bacterial taxa with differential abundance due to heat and drought and found that taxa affected during climate events are not necessarily the taxa affected in recovery periods, showing the complexity and importance of legacy effects. Additionally, we found evidence that symbiotic groups of microbes important to plant performance respond in diverse ways to climate treatments and their legacy, suggesting plants may be impacted by past climatic events like drought and warming even if they do not experience the event themselves.

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Warmer temperatures favor slower-growing bacteria in natural marine communities

Cited by 9 publications

References 80 publications

Deviation from neutral species abundance distributions unveils geographical differences in the structure of diatom communities

Deviation from neutral species abundance distributions unveils geographical differences in the structure of diatom communities

Temperature and nutrition do not interact to shape the evolution of metabolic rate

Resistance and resilience of soil microbiomes under climate change

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