Ocean acidification promotes broad transcriptomic responses in marine metazoans: a literature survey

Frontiers in Zoology, Journal Year: 2020, Volume and Issue: 17(1)

Published: Feb. 17, 2020

Abstract For nearly a decade, the metazoan-focused research community has explored impacts of ocean acidification (OA) on marine animals, noting that changes in chemistry can impact calcification, metabolism, acid-base regulation, stress response and behavior organisms hold high ecological economic value. Because OA interacts with several key physiological processes organisms, transcriptomics become widely-used method to characterize whole organism responses molecular level as well inform mechanisms explain phenotypes observed OA. In past there been notable rise studies examine transcriptomic metazoans, here we attempt summarize findings across these studies. We find vary dramatically their pH although common patterns are often observed, including shifts ion metabolic processes, calcification mechanisms. also see examining organismal multi-stressor context, reporting synergistic effects temperature. addition, is an increase use evolutionary potential adapt conditions future through population transgenerational experiments. Overall, literature reveals complex OA, which some will face more dramatic consequences than others. This have wide-reaching communities ecosystems whole.

Language: Английский

---

Living in future ocean acidification, physiological adaptive responses of the immune system of sea urchins resident at a CO2 vent system

The Science of The Total Environment, Journal Year: 2019, Volume and Issue: 672, P. 938 - 950

Published: April 2, 2019

Language: Английский

---

Rare genetic variation and balanced polymorphisms are important for survival in global change conditions

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2019, Volume and Issue: 286(1904), P. 20190943 - 20190943

Published: June 12, 2019

Standing genetic variation is important for population persistence in extreme environmental conditions. While some species may have the capacity to adapt predicted average future global change conditions, ability survive events largely unknown. We used single-generation selection experiments on hundreds of thousands Strongylocentrotus purpuratus sea urchin larvae generated from wild-caught adults identify adaptive responsive moderate (pH 8.0) and 7.5) low-pH Sequencing genomic DNA pools larvae, we identified consistent changes allele frequencies across replicate cultures each pH condition observed increased linkage disequilibrium around selected loci, revealing recombined standing variation. found that loci responding uniquely either regime were at low starting while variants responded both conditions (11.6% variants) started high frequencies. Loci under performed functions related energetics, tolerance, cell growth actin/cytoskeleton dynamics. These results highlight will require two classes variation: common, pH-responsive maintained by balancing a heterogeneous environment, rare variants, particularly must be large sizes.

Language: Английский

---

Climate change alters the haemolymph microbiome of oysters

Marine Pollution Bulletin, Journal Year: 2021, Volume and Issue: 164, P. 111991 - 111991

Published: Jan. 20, 2021

Language: Английский

---

Transcriptomic profiling of adaptive responses to ocean acidification

Molecular Ecology, Journal Year: 2017, Volume and Issue: 26(21), P. 5974 - 5988

Published: Aug. 21, 2017

Abstract Some populations of marine organisms appear to have inherent tolerance or the capacity for acclimation stressful environmental conditions, including those associated with climate change. Sydney rock oysters from B2 breeding line exhibit resilience ocean acidification ( OA ) at physiological level. To understand molecular basis this resilience, we analysed gill transcriptome that had been exposed near‐future projected pH over two consecutive generations. Our results suggest distinctive performance in face is mediated by selective expression genes involved multiple cellular processes. Subsequent high‐throughput qPCR revealed some these transcriptional changes are exclusive and so may be their . The intracellular processes differentially abundant primarily involve control cell cycle maintenance homeostasis. These enable prevent apoptosis resulting oxidative damage alleviate effects through regulation cycle. Comparative analysis conditioning across sequential generations supported contention wild‐type different trajectories changing gene responding findings reveal broad set underlying transgenerational potential a calcifier. Identifying mechanisms stress can uncover survive thrive rapidly ocean.

Language: Английский

---

Effects of ocean acidification and salinity variations on the physiology of osmoregulating and osmoconforming crustaceans

Journal of Comparative Physiology B, Journal Year: 2018, Volume and Issue: 188(5), P. 729 - 738

Published: June 11, 2018

Language: Английский

---

Impact of Ocean Acidification on the Energy Metabolism and Antioxidant Responses of the Yesso Scallop (Patinopecten yessoensis)

Frontiers in Physiology, Journal Year: 2019, Volume and Issue: 9

Published: Jan. 21, 2019

Ocean acidification (OA), which is caused by increasing levels of dissolved CO2 in the ocean, a major threat to marine ecosystems. Multiple lines scientific evidence show that bivalves, including scallops, are vulnerable OA due their poor capacities regulate extracellular ions and acid-based status. However, physiological mechanisms scallops responding not well understood. In this study, we evaluated effects 45 days exposure (pH 7.5) on energy metabolism antioxidant capability Yesso scallops. Some biochemical markers related (e.g., content glycogen ATP, activity ATPase, lactate dehydrogenase, glutamate oxaloacetate transaminase glutamate-pyruvate transaminase), capacity reactive oxygen species level, superoxide dismutase catalase) cellular damage lipid peroxidation level) were measured. Our results demonstrate reduced pH (7.5) varied different tissues. The reserves mainly accumulated adductor muscle hepatopancreas. exhibit modulation dehydrogenase activities stimulate anaerobic metabolism. highly active Na+/K+-ATPase massive ATP consumption mantle gill indicate large amount was allocated for ion regulation process maintain acid-base balance reduced-pH environment. Moreover, increase level catalase muscle, oxidative stress induced after long-term findings tissue-specific, homeostasis could be modulated through

Language: Английский

---

General DNA Methylation Patterns and Environmentally-Induced Differential Methylation in the Eastern Oyster (Crassostrea virginica)

Frontiers in Marine Science, Journal Year: 2020, Volume and Issue: 7

Published: April 22, 2020

Epigenetic modification, specifically DNA methylation, is one possible mechanism for intergenerational plasticity. Before inheritance of methylation patterns can be characterized, we need a better understanding how environmental change modifies the parental epigenome. To examine influence experimental ocean acidification on eastern oyster (Crassostrea virginica) gonad tissue, oysters were cultured in laboratory under control (491 ± 49 µatm) or high (2550 211 pCO2 conditions four weeks. from reproductive tissue was isolated five per treatment, then subjected to bisulfite treatment and sequencing. Irrespective primarily found gene bodies with approximately 22% CpGs (2.7% total cytosines) C. virginica genome predicted methylated. In response elevated pCO2, 598 differentially methylated loci overlapping bodies. A majority exons (61.5%) less intron overlap (31.9%). While there no evidence significant tendency genes associated distinct biological processes, concentration these bodies, including involved protein ubiquitination biomineralization suggests may important transcriptional acidification. Changes also indicate potential inherited by offspring. Understanding modify epigenome, if modifications are inherited, allows ecosystems will respond change.

Language: Английский

---

The prokaryotic and eukaryotic microbiome of Pacific oyster spat is shaped by ocean warming but not acidification

Applied and Environmental Microbiology, Journal Year: 2024, Volume and Issue: 90(4)

Published: March 11, 2024

ABSTRACT Pacific oysters ( Magallana gigas, a.k.a. Crassostrea gigas ), the most widely farmed oysters, are under threat from climate change and emerging pathogens. In part, their resilience may be affected by microbiome, which, in turn, influenced ocean warming acidification. To understand these impacts, we exposed early-development oyster spat to different temperatures (18°C 24°C) p CO 2 levels (800, 1,600, 2,800 µatm) a fully crossed design for 3 weeks. Under all conditions, microbiome changed over time, with large decrease relative abundance of potentially pathogenic ciliates Uronema marinum ) treatments time. The composition differed significantly temperature, but not acidification, indicating that microbiomes can altered is resilient acidification our experiments. Microbial taxa implying adaptive strategies ecological specializations among microorganisms. Additionally, small proportion (~0.2% total taxa) relatively abundant microbial were core constituents (>50% occurrence samples) across temperatures, levels, or Some taxa, including A4b bacteria members family Saprospiraceae phyla Chloroflexi (syn. Chloroflexota Bacteroidetes Bacteroidota respectively, as well protists genera Labyrinthula Aplanochytrium class Labyrinthulomycetes , Pseudoperkinsus tapetis Ichthyosporea suggesting they play an important, albeit unknown, role maintaining structural functional stability response These findings highlight flexibility environmental changes. IMPORTANCE economically important species oyster, production depends on healthy spat. health productivity associated microbiota; yet, studies have scrutinized effects temperature prokaryotic eukaryotic Here, show both and, first surprisingly changes sensitive warming. potential implications survival amid underscore need cascading productivity.

Language: Английский

---

Epigenetic‐associated phenotypic plasticity of the ocean acidification‐acclimated edible oyster in the mariculture environment

Molecular Ecology, Journal Year: 2022, Volume and Issue: 32(2), P. 412 - 427

Published: Oct. 31, 2022

For marine invertebrates with a pelagic-benthic life cycle, larval exposure to ocean acidification (OA) can affect adult performance in response another environmental stressor. This carry-over effect has the potential alter phenotypic traits. However, molecular mechanisms that mediate "OA"-triggered effects have not been explored despite such information being key improving species fitness and management strategies for aquafarming. study integrated genome-wide DNA methylome transcriptome examine epigenetic modification-mediated OA impacts on traits of ecologically commercially important oyster Crassostrea hongkongensis under field conditions. Larvae C. were exposed control pH 8.0 low 7.4 conditions, mimicking near future scenario their habitat, before outplanted as post-metamorphic juveniles at two mariculture sites contrasting stressors 9 months. The was found persistent growth survival trade-off juveniles, although beneficial or adverse depended conditions sites. Site-specific plasticity demonstrated diverse methylation-associated gene expression profile, signal transduction endocrine system most common highly enriched functions. Highly methylated exons prevailed genes related general metabolic endocytic responses these are evolutionarily conserved various OA. These results suggest oysters prior history had ability trigger rapid local adaptive via modification cope multiple field.

Language: Английский

---