Stress response to low temperature: Transcriptomic characterization in <i>Crassostrea sikamea</i>
 × <i>Crassostrea angulata</i>
 hybrids

Yan, Lulu; Li, Yangchun; Wang, Zhaoping; Su, Jiaqi; Yu, Ruihai; Yan, Xiwu; Ma, Peizhen; Cui, Yuting

doi:10.1111/are.13801

Cited by 7 publications

(4 citation statements)

References 61 publications

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“…Finally, we report here a linear increase in the expression level of genes related to GTPase activity and GTP binding, which are characteristics of stress response in Crassostrea spp. (Yan et al, 2018). Overall, these changes suggest that longer exposure to moderate acidification (above tipping point) could impair overall oyster fitness.…”

Section: Discussionmentioning

confidence: 99%

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Revisiting tolerance to ocean acidification: Insights from a new framework combining physiological and molecular tipping points of Pacific oyster

Lutier

Poi

Gazeau

et al. 2022

Global Change Biology

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Studies on the impact of ocean acidification on marine organisms involve exposing organisms to future acidification scenarios which has limited relevance for coastal calcifiers living in a mosaic of habitats. Identification of tipping points beyond which detrimental effects are observed is a widely generalizable proxy of acidification susceptibility at the populational level. This approach is limited to a handful of studies that focus on only a few macro-physiological traits, thus overlooking the whole organism response. Here we develop a framework to analyze the broad macro-physiological and molecular responses over a wide pH range in juvenile oyster. We identify low tipping points for physiological traits at pH 7.3-6.9 that coincide with a major reshuffling in membrane lipids and transcriptome. In contrast, a drop in pH affects shell parameters above tipping points, likely impacting animal fitness. These findings were made possible by the development of an innovative methodology to synthesize and identify the main patterns of variations in large -omic datasets, fitting them to pH and identifying molecular tipping-points. We propose the broad application of our framework to the assessment of effects of global change on other organisms.

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Section: Discussionmentioning

confidence: 99%

Section: Ta B L E 2 (Continued)mentioning

confidence: 99%

Revisiting tolerance to ocean acidification: Insights from a new framework combining physiological and molecular tipping points of Pacific oyster

Lutier

Poi

Gazeau

et al. 2022

Global Change Biology

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 94%

Revisiting tolerance to ocean acidification: insights from a new framework combining physiological and molecular tipping points of Pacific oyster

Lutier

Poi

Gazeau

et al. 2021

Preprint

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Studies on the impact of ocean acidification on marine organisms involve exposing organisms to future acidification scenarios as projected for open ocean, which has limited relevance for coastal calcifiers. Characterization of reaction norms across a range of pH and identification of tipping points beyond which detrimental effects are observed has been limited and focus on only a few macro-physiological traits. Here we filled this knowledge gap by developing a framework to analyze the broad macro-physiological and molecular responses over a wide pH range of juvenile Pacific oyster, a model species for which the tolerance threshold to acidification remains unknown. We identify low tipping points for physiological traits at pH 7.3-6.9 that coincide with a major reshuffling in membrane lipids and transcriptome. In contrast, shell parameters exhibit effects with pH drop well before tipping points, likely impacting animal fitness. These findings were made possible by the development of an innovative methodology to synthesize and identify the main patterns of variations in large -omic datasets, fit them to pH and identify molecular tipping-points. We propose the application of our framework broadly to the assessment of effects of global change on other organisms.

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“…The reduction in fertility observed in bivalves during cold spells has been attributed to changes in the production of reproductive hormones, such as estrogen and testosterone (Liu et al, 2016). The disruption of hormone production is linked to the down-regulation of genes involved in their synthesis and alterations in the signaling pathways that regulate reproduction, including the hypothalamic-pituitary-gonadal axis (Yan et al, 2018).…”

Section: Impacts Of Cold Spells On Bivalve Physiologymentioning

confidence: 99%

Surviving the cold: a review of the effects of cold spells on bivalves and mitigation measures

Masanja

Yang

et al. 2023

Front. Mar. Sci.

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Cold spells, characterized by prolonged periods of low temperature, have become increasingly frequent, intense, and prolonged due to the ongoing effects of climate change, resulting in devastating consequences for marine ecosystems and significant socio-economic impacts. As ectothermic organisms, bivalves are dependent on their environment for regulating body temperature, and thus, cold spells can disrupt their normal functioning, leading to mass mortalities. This review comprehensively summarizes the effects of cold spells on bivalves and proposes mitigation measures to be considered in future bivalve farming and management plans. Scientific evidence has indicated that cold spells can alter bivalve metabolism, leading to an increase in stress protein production and a decrease in the activity of energy metabolism-related enzymes, which can negatively impact the bivalve immune system and increase the risk of disease. To mitigate the effects of cold spells on bivalves, a number of strategies can be employed, including the use of thermal shelters such as floating covers, selective breeding of more cold-tolerant bivalves, and genetic engineering to enhance the expression of heat-shock proteins in bivalves. The impacts of cold spells on bivalves are significant, affecting both their physiological and molecular processes. Through the implementation of thermal shelters, selective breeding, and genetic engineering, the effects of cold spells on bivalves can be reduced, improving their survival and growth. Further research is required to fully understand cold spells’ impacts on bivalves and develop effective mitigation measures.

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Stress response to low temperature: Transcriptomic characterization in Crassostrea sikamea × Crassostrea angulata hybrids

Cited by 7 publications

References 61 publications

Revisiting tolerance to ocean acidification: Insights from a new framework combining physiological and molecular tipping points of Pacific oyster

Revisiting tolerance to ocean acidification: Insights from a new framework combining physiological and molecular tipping points of Pacific oyster

Revisiting tolerance to ocean acidification: insights from a new framework combining physiological and molecular tipping points of Pacific oyster

Surviving the cold: a review of the effects of cold spells on bivalves and mitigation measures

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