ELUCIDATING THE MECHANISMS OF STRESS TOLERANCE IN REEF-BUILDING CORAL HOLOBIONTS DOI Creative Commons
Emma Strand

Опубликована: Янв. 1, 2023

Coral reefs worldwide are threatened by climate change effects like increasing ocean warming and acidification. These increased pressures cause a dysbiosis between the coral host, algal endosymbionts, associated microbiome that results in host expelling leaving with stark white ‘bleached’ appearance. Without their hosts forced to sustain themselves energetically heterotrophy instead of relying on autotrophic carbon energy sources once came from endosymbionts. When this response, termed ‘coral bleaching’, happens reef-wide during an extreme wave temperatures, is called mass Bleaching Event. The frequency intensity events around world, forcing corals acclimatize survive. This dissertation investigates physiological genomic mechanisms underlying acclimatization stress tolerance two common, reef-building corals: Montipora capitata Pocillopora acuta. In three chapters, I present findings support phenotypic plasticity M. hypothesize contributing this. Chapter 1, conducted ex-situ experiment mimicked environmentally realistic, extended heatwave acidification scenario factorial design temperature pCO2 conditions for two-month period recovery period. Both species’ states were significantly challenged but displayed more favorable photosynthetic rate antioxidant capacity ratio thermally tolerant symbionts. Although survived at higher rates than P. acuta, state was still impacted after months recovery, suggesting marine heatwaves likely induce legacies may impact performance next, inevitable heatwave. 2, further investigated acuta’s response 1 level. We sought test environmental stressors gene body DNA methylation patterns elucidate how sensitive dynamic changes invertebrates. However, when analyzing expression data, our team found polyploidy prevalent samples, which convoluted ability effect addition structure. followed genetic lineage diploid exhibiting highest levels despite lower epigenetic machinery proteins. Despite significant pattern differences polyploidies, acuta populations severely declined (outlined 1), regardless differential ploidy status, species be ultimately too future conditions. 3, capitata, directly comparing bleached (‘Susceptible’) non-bleached (‘Resistant’) phenotypes conspecific pairs. very little diversity among samples there no structure variation context. ‘Resistant’ characterized association symbionts, variability, genes involved death robust cellular response. all chapters suggest both stats bleaching susceptibility phenotype not one mechanism act alone produce particular phenotype. aids elucidating corals, guiding current knowledge face change.

Язык: Английский

Unraveling individual and combined toxicity of microplastics and tetracycline at environment-related concentrations to coral holobionts DOI
Shiqi Jiang, Lei He,

Linglong Cao

и другие.

Journal of Hazardous Materials, Год журнала: 2025, Номер 490, С. 137823 - 137823

Опубликована: Март 3, 2025

Язык: Английский

Процитировано

1
Mechanisms of ammonotelism, epithelium damage, cellular apoptosis, and proliferation in gill of Litopenaeus vannamei under NH4Cl exposure DOI

Yaobing Li,

Xin Zhang,

Ruixue Tong

и другие.

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(10), С. 15153 - 15171

Опубликована: Янв. 30, 2024

Язык: Английский

Процитировано

5
Turbid reefs experience lower coral bleaching effects in NE Borneo (Sabah, Malaysia) DOI Creative Commons

Allia Rosedy,

Isabel Ives,

Zarinah Waheed

и другие.

Regional Studies in Marine Science, Год журнала: 2023, Номер 68, С. 103268 - 103268

Опубликована: Окт. 30, 2023

The impacts of climate change are becoming more evident in recent years. Future projections suggest that heat stress events will likely be frequent and severe over the next century, threatening high diversity Coral Triangle. Shallow turbid reefs may help dampen some these effects as several studies have shown their inherent resilience to events. Therefore, our main goal was test this hypothesis by assessing response corals event 2020. We conducted bleaching surveys two contrasting habitats Darvel Bay, Sabah: reef Sakar, clear-water Blue Lagoon. Relatively coral cover (40–43%) observed on both 2019. Underwater data loggers were used monitor temperature light. colonies scored from video transects 100 m at 5 10 depth localities, with an additional transect 15 A total 1326 evaluated for presence severity based six-point scoring method. Bleaching varied significantly between reefs. Low reef, average 9.6% having bleached. Meanwhile, Lagoon had 37.1% affected bleaching. also among depth, where deeper depths bleached less Foliose forms most Lagoon, while massive suffered Sakar reef. responses different genera. While Ctenactis Herpolitha consistently resistant reefs, Leptoseris, Fungia Goniopora Pachyseris notably than Overall, indices within lower assessed around globe during These outcomes support hosting resilient communities face change.

Язык: Английский

Процитировано

11
The differential physiological responses to heat stress in the scleractinian coral Pocillopora damicornis are affected by its energy reserve DOI
Qinghua Yu,

Chunlong He,

Yi Wang

и другие.

Marine Environmental Research, Год журнала: 2025, Номер 204, С. 106966 - 106966

Опубликована: Янв. 23, 2025

Язык: Английский

Процитировано

0
Short-term negative effects of seawater acidification on the rhodolith holobionts metatranscriptome DOI
Catalina Estrada,

Odara Araujo de Oliveira,

Tooba Varasteh

и другие.

The Science of The Total Environment, Год журнала: 2025, Номер 965, С. 178614 - 178614

Опубликована: Янв. 29, 2025

Язык: Английский

Процитировано

0
Molecular and physiological responses of black rockfish (Sebastes schlegelii) to short- and medium-term ocean acidification DOI

Yunhong Gao,

Jianchao Li, Wenwen Wang

и другие.

Environmental Research, Год журнала: 2025, Номер unknown, С. 121431 - 121431

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Comprehensive assessment of chemical and microbial inducers for coral larval settlement across diverse coral species DOI Creative Commons
Huimin Sun, Qingsong Yang, Junde Dong

и другие.

Frontiers in Marine Science, Год журнала: 2025, Номер 12

Опубликована: Май 30, 2025

Introduction Coral restoration efforts increasingly focus on enhancing larval settlement and post-settlement survival. However, the species-specific efficacy of different inducers remains inadequately understood, limiting optimization protocols. Methods This study systematically assessed effectiveness three inducers—Crustose coralline algae (CCA), Chemical (CaCl 2 ), Microbial ( Metabacillus sp. cB07)—across seven coral species, including both brooders broadcast spawners. Larvae were exposed to gradient concentrations each inducer determine optimal treatment durations. Effects survivorship, metamorphosis, measured. Post-settlement recruits treated with optimized procedures further evaluated for metabolic rates, morphology, survival, growth. Results Optimal durations varied significantly among CaCl (10–60 mmol/L) cB07 (3 × 10 6 –3 7 cfu/mL) showing broad-spectrum activity comparable CCA. CCA induced highest rates (43.3%–93.3%) within 1–2 days, showed moderate induction (23.3%–60.3%) 0.5–4 exhibited similar (26.7%–60.0%) 2–4 days. Biological effects differed: accelerated metamorphosis but lowered survival in sensitive while delayed suppressed respiratory indicating higher toxicity. Post-settlement, by had calcification than those cB07. Discussion These findings underscore necessity tailoring protocols life histories physiological responses corals. Integrating ecological insights offers practical guidelines enhance success amid growing environmental pressures.

Язык: Английский

Процитировано

0
Exposure to pentachlorophenol destructs the symbiotic relationship between zooxanthellae and host and induces pathema in coral Porites lutea DOI
Yuanyuan Zhang,

Lan Luo,

Pin Gan

и другие.

The Science of The Total Environment, Год журнала: 2023, Номер 907, С. 167956 - 167956

Опубликована: Окт. 24, 2023

Язык: Английский

Процитировано

7
Physiological and microbiome adaptation of coral Turbinaria peltata in response to marine heatwaves DOI Creative Commons
Xin Zhai, Yanping Zhang, Jie Zhou

и другие.

Ecology and Evolution, Год журнала: 2024, Номер 14(2)

Опубликована: Фев. 1, 2024

Against the backdrop of global warming, marine heatwaves are projected to become increasingly intense and frequent. This trend poses a potential threat survival corals maintenance entire coral reef ecosystems. Despite extensive evidence for resilience heat stress, their ability withstand repeated heatwave events has not been determined. In this study, we examined responses

Язык: Английский

Процитировано

2
Gene expression of Pocillopora damicornis coral larvae in response to acidification and ocean warming DOI Creative Commons
Youfang Sun,

Lan Yi,

Nils Rädecker

и другие.

BMC Genomic Data, Год журнала: 2024, Номер 25(1)

Опубликована: Март 8, 2024

Abstract Objectives The endosymbiosis with Symbiodiniaceae is key to the ecological success of reef-building corals. However, climate change threatening destabilize this symbiosis on a global scale. Most studies looking into response corals heat stress and ocean acidification focus coral colonies. As such, our knowledge symbiotic interactions in other stages lifecycle remains limited. Establishing transcriptomic resources for larvae under can thus provide foundation understanding genomic basis symbiosis, its susceptibility change. Here, we present gene expression dataset generated from Pocillopora damicornis exposure elevated temperature conditions below bleaching threshold symbiosis. Data description This comprised 16 samples (30 per sample) collected four treatments (Control, High p CO 2 , Temperature, Combined Temperature treatments). Freshly were exposed treatment five days, providing valuable insights vulnerable stage lifecycle. In combination previously published datasets, resource will facilitate in-depth investigation effects implication

Язык: Английский

Процитировано

2