Synergistic response to climate stressors in coral is associated with genotypic variation in baseline expression

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2019)

Published: March 27, 2024

As environments are rapidly reshaped due to climate change, phenotypic plasticity plays an important role in the ability of organisms persist and is considered especially acclimatization mechanism for long-lived sessile such as reef-building corals. Often, this a single genotype display multiple phenotypes depending on environment modulated by changes gene expression, which can vary response environmental via two mechanisms: baseline expression plasticity. We used transcriptome-wide profiling eleven genotypes common-gardened Acropora cervicornis explore genotypic variation thermal acidification stress, both individually combination. show that combination these stressors elicits synergistic response, stress variation. Additionally, we demonstrate frontloading large module coexpressed genes associated with greater retention algal symbionts under combined stress. These results illustrate individuals change even when have shared histories, affecting their performance future scenarios.

Language: Английский

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Quantifying coral-algal interactions in an acidified ocean: Sargassum spp. exposure mitigates low pH effects on Acropora cervicornis health

Frontiers in Marine Science, Journal Year: 2025, Volume and Issue: 12

Published: Feb. 28, 2025

Increasingly frequent large-scale pelagic Sargassum algae blooms in the Atlantic have become a problem for coastal ecosystems. The mass decay of these reduces water quality flora and fauna. However, effects living on seawater consequently coral reef ecosystems that rely delicately balanced carbonate chemistry are more ambiguous. Future oceans predicted to be acidic as additional anthropogenic CO 2 emissions absorbed, potentially tipping balance favor algal at cost survival. This study aimed simulate indirect interaction between S argassum spp. Acropora cervicornis fragments from Florida Reef current-day future ocean pH conditions over course 70 days mesocosm experimental system. Measurements growth health via buoyant weight Pulse Amplitude Modulated (PAM) fluorescence measurements reveal an unexpected coral-algal interaction. After 1 month, was significantly reduced under acidification exposure ; same time quantum yield maximum electron transport rate photosynthesis were increased relative control counterparts ambient scenarios by up 14% 18% respectively. These improvements photosynthetic efficiency did not translate significant differences final measurement point. In addition, presence raise system, raising questions about how it benefited exposed corals. Heterotrophy detrital matter is suspected compensate impaired stressed Therefore, despite their current negative reputation, could provide short term localized benefits corals present conditions.

Language: Английский

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Antibiotic type and dose variably affect microbiomes of a disease-resistant Acropora cervicornis genotype

Environmental Microbiome, Journal Year: 2025, Volume and Issue: 20(1)

Published: May 2, 2025

Abstract Background As coral diseases become more prevalent and frequent, the need for new intervention strategies also increases to counteract rapid spread of disease. Recent advances in disease mitigation have resulted increased use antibiotics on reefs, as their application may halt lesion progression. Although efficacious, consequences deliberate microbiome manipulation resulting from antibiotic administration are less well-understood– especially non-diseased corals that appear visually healthy. Therefore, understand how apparently healthy affected by antibiotics, we investigated three individual a mixture three, impact structure diversity disease-resistant Caribbean staghorn ( Acropora cervicornis ) genotype. Over 96-hour, aquarium-based exposure experiment, collected processed tissue water samples 16S rRNA gene analysis. Results We found type dose distinctively alpha diversity, beta community composition. In experimental controls, composition was dominated an unclassified bacterial taxon order Campylobacterales , while each treatment significantly reduced relative abundance this taxon. Those taxa persisted following largely differed dose, thereby indicating result varying potential opportunist establishment. Conclusion Together, these data suggest induce dysbiosis– hallmarked loss dominant bacterium increase associated with stress responses. Understanding off-target is critical not only informed, long-term restoration practices, but highlighting importance responsible dissemination into natural environments.

Language: Английский

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Gene expression response under thermal stress in two Hawaiian corals is dominated by ploidy and genotype

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(7)

Published: July 1, 2024

Transcriptome data are frequently used to investigate coral bleaching; however, the factors controlling gene expression in natural populations of these species poorly understood. We studied two corals,

Language: Английский

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