A framework for understanding gene expression plasticity and its influence on stress tolerance

Molecular Ecology, Journal Year: 2021, Volume and Issue: 30(6), P. 1381 - 1397

Published: Jan. 27, 2021

Phenotypic plasticity can serve as a stepping stone towards adaptation. Recently, studies have shown that gene expression contributes to emergent stress responses such thermal tolerance, with tolerant and susceptible populations showing distinct transcriptional profiles. However, given the dynamic nature of expression, interpreting transcriptomic results in way elucidates functional connection between observed response is challenging. Here, we present conceptual framework guide interpretation reaction norms context tolerance. We consider evolutionary adaptive potential discuss influence sampling timing, resilience, well complexities related life history when dynamics how these patterns relate host highlight corals case study demonstrate value this for non-model systems. As species face rapidly changing environmental conditions, modulating mechanistic link from genetic cellular processes physiological allow organisms thrive under novel conditions. Interpreting or whether employ ensure short-term survival will be critical understanding global impacts climate change across diverse taxa.

Language: Английский

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Integrating cryptic diversity into coral evolution, symbiosis and conservation

Nature Ecology & Evolution, Journal Year: 2024, Volume and Issue: 8(4), P. 622 - 636

Published: Feb. 13, 2024

Language: Английский

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Inherent differential microbial assemblages and functions associated with corals exhibiting different thermal phenotypes

Science Advances, Journal Year: 2025, Volume and Issue: 11(3)

Published: Jan. 17, 2025

Certain coral individuals exhibit enhanced resistance to thermal bleaching, yet the specific microbial assemblages and their roles in these phenotypes remain unclear. We compared communities of bleaching–resistant (TBR) bleaching–sensitive (TBS) corals using metabarcoding metagenomics. Our multidomain approach revealed stable distinct compositions between phenotypes. Notably, TBR were inherently enriched with eukaryotes, particularly Symbiodiniaceae, linked photosynthesis, biosynthesis antibiotic antitumor compounds glycosylphosphatidylinositol-anchor proteins, crucial for cell wall regulation metabolite exchange. In contrast, TBS dominated by bacterial metabolic genes related nitrogen, amino acid, lipid metabolism. The inherent microbiome differences corals, already observed before stress, point holobiont associated bleaching resistance, offering insights into mechanisms underlying response climate-induced stress.

Language: Английский

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Coral environmental memory: causes, mechanisms, and consequences for future reefs

Trends in Ecology & Evolution, Journal Year: 2021, Volume and Issue: 36(11), P. 1011 - 1023

Published: Aug. 5, 2021

Language: Английский

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Insights from extreme coral reefs in a changing world

Coral Reefs, Journal Year: 2020, Volume and Issue: 39(3), P. 495 - 507

Published: June 1, 2020

Language: Английский

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Contrasting heat stress response patterns of coral holobionts across the Red Sea suggest distinct mechanisms of thermal tolerance

Molecular Ecology, Journal Year: 2021, Volume and Issue: 30(18), P. 4466 - 4480

Published: Aug. 3, 2021

Corals from the northern Red Sea, in particular Gulf of Aqaba (GoA), have exceptionally high bleaching thresholds approaching >5℃ above their maximum monthly mean (MMM) temperatures. These elevated are thought to be due historical selection, as corals passed through warmer Southern Sea during recolonization Arabian Sea. To test this hypothesis, we determined thermal tolerance GoA versus central (CRS) Stylophora pistillata using multi-temperature acute stress assays determine thresholds. Relative and CRS were indeed similar (~7℃ MMM). However, absolute on average 3℃ those corals. explore molecular underpinnings, gene expression microbiome response coral holobiont. Transcriptomic responses differed markedly, with a strong symbiotic algae remarkably muted colonies. Concomitant this, algal genes showed temperature-induced corals, while exhibiting fixed (front-loading) Bacterial community composition changed dramatically under heat stress, whereas displayed stable assemblages. We interpret that resilient population tipping point contrast pattern consistently resistance cannot further attune. Such differences suggest distinct mechanisms may affect populations ocean warming.

Language: Английский

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Nitrogen sufficiency enhances thermal tolerance in habitat-forming kelp: implications for acclimation under thermal stress

Scientific Reports, Journal Year: 2020, Volume and Issue: 10(1)

Published: Feb. 21, 2020

Abstract Local and global changes associated with anthropogenic activities are impacting marine terrestrial ecosystems. Macroalgae, especially habitat-forming species like kelp, play critical roles in temperate coastal However, their abundance distribution patterns have been negatively affected by warming many regions around the globe. Along change, ecosystems also impacted local drivers such as eutrophication. The interaction between might modulate kelp responses to environmental change. This study examines regulatory effect of NO 3 − on thermal plasticity giant Macrocystis pyrifera . To do this, performance curves (TPCs) key temperature-dependant traits–growth, photosynthesis, assimilation chlorophyll a fluorescence–were examined under nitrate replete deplete conditions short-term incubation. We found that was modulated but different were observed among traits. Our reveals nitrogen, driver, modulates high seawater temperatures, ameliorating negative impacts physiological (i.e. growth photosynthesis). this be species-specific vary biogeographic – thus, further work is needed determine generality our findings other macroalgae experiencing temperatures close tolerance due climate

Language: Английский

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Fast and pervasive transcriptomic resilience and acclimation of extremely heat-tolerant coral holobionts from the northern Red Sea

Proceedings of the National Academy of Sciences, Journal Year: 2021, Volume and Issue: 118(19)

Published: May 3, 2021

Corals from the northern Red Sea and Gulf of Aqaba exhibit extreme thermal tolerance. To examine underlying gene expression dynamics, we exposed

Language: Английский

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Perspectives on the Use of Coral Reef Restoration as a Strategy to Support and Improve Reef Ecosystem Services

Frontiers in Marine Science, Journal Year: 2021, Volume and Issue: 8

Published: April 1, 2021

In 2019, the United Nations Environment Assembly requested that Programme (UNEP) and International Coral Reef Initiative (ICRI) define best practices for coral restoration. Guidelines led by UNEP were prepared a team of 20 experts in reef management, science, policy to catalog best-available knowledge field provide realistic recommendations use restoration as management strategy. Here, we synthesis these guidelines. Specifically, present (1) case value face increasing frequency intensity disturbances associated with climate change, (2) set improving strategy, tailored goals current methods. can be useful tool support resilience, especially at local scales where recruitment is limited, mitigated. While there limited evidence long-term, ecologically relevant success efforts, ongoing investments research development are likely improve scale, cost-efficiency We conclude should not seen “silver bullet” address ecological decline applied appropriately, due diligence, concert other broad resilience strategies.

Language: Английский

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Resilience in reef‐building corals: The ecological and evolutionary importance of the host response to thermal stress

Molecular Ecology, Journal Year: 2019, Volume and Issue: 29(3), P. 448 - 465

Published: Dec. 17, 2019

Coral reefs are under extreme threat due to a number of stressors, but temperature increases changing climate the most severe. Rising ocean temperatures coupled with local extremes lead extensive bleaching, where coral-algal symbiosis breaks down and corals may die, compromising structure function reefs. Although symbiotic nature coral colony has historically been focus research on resilience, host itself is foundational component in response thermal stress. Fixed effects set trait baselines through evolutionary processes, acting many loci small effect create mosaics tolerance across latitudes individual These genomic differences can be strongly heritable, producing wide variation among clones different genotypes or families specific larval cross. Phenotypic plasticity overlaid these growing body knowledge demonstrates potential for acclimatization reef-building variety mechanisms that promote resilience stress tolerance. The long-term persistence will require adjust warmer within generation, bridging gap reproductive events allow recombination standing diversity adaptive change. Business-as-usual scenarios probably loss some populations species future, so interaction between intragenerational pressure critical survival

Language: Английский

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