Oxidative stress on scleractinian coral fragments following exposure to high temperature and low salinity

Dias, Marta; Madeira, Carolina; Jogee, Nadia; Ferreira, Ana Maria da Costa; Gouveia, Raúl; Cabral, Henrique N.; Diniz, Mário

doi:10.1016/j.ecolind.2019.105586

Cited by 36 publications

(31 citation statements)

References 120 publications

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“…Many studies to date have found that MPs could accumulate in an organism and cause endocrine disruption (Chapron et al, 2018;Syakti et al, 2019). It has been revealed that the reactive oxygen species (ROS) and antioxidant enzymes (SOD, CAT, and GSH) of coral are up-regulated after exposure to MPs (Chen et al, 2017;Tang et al, 2018;Dias et al, 2019). Oxidative damage could be caused by excessive ROS after exposure to MPs (Paul-Pont et al, 2016;Chen et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Effects of Microplastics Exposure on the Acropora sp. Antioxidant, Immunization and Energy Metabolism Enzyme Activities

Xiao

Liao

et al. 2021

Front. Microbiol.

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Section: Introductionmentioning

confidence: 99%

Effects of Microplastics Exposure on the Acropora sp. Antioxidant, Immunization and Energy Metabolism Enzyme Activities

Xiao

Liao

et al. 2021

Front. Microbiol.

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“…The high temperature and low salinity treatment had synergistic effects on scleractinian coral fragment. [7], [13]…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, the combination of high temperature and low salinity treatment may aggravate the effects of coral bleaching. [7], [8] In Thailand, reported severe bleaching as a result of the increasing sea surface temperature from 29 o C to 30 o C for long periods in 2010 [9] and the years after, the severe flooding during the monsoon season in Thailand in the year 2011 diluted seawater around Si Chang Island to 11 psu which resulted in coral bleaching. [10] In order to better understand and test the effects of temperature and salinity, both separately and in combination, toward the change of zooxanthellae in the cauliflower coral Pocillopora damicornis a laboratory condition was chosen.…”

Section: Introductionmentioning

confidence: 99%

Effects of Temperature and Salinity on Coral Bleaching in Laboratory

Patthanasiri¹,

Lirdwitayaprasit²,

Yeemin³

et al. 2022

IJESD

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Coral bleaching occurs when cell density or the concentration of photosynthetic pigments of the endosymbionts, zooxanthellae are decreased. This incident may possibly be caused by some environmental stresses, especially under conditions of elevated temperature, decrease in water salinity, or a combination of these factors. To determine the role of temperature and salinity on zooxanthellae and coral bleaching this study was conducted in aquariums under laboratory conditions on cauliflower coral Pocillopora damicornis. The samples were collected from three sites around Samaesan Island, Chonburi, Thailand. Three sets of experiments were conducted at three levels of temperature: room temperature 27 (control), 30, and 33 oC respectively. At each temperature level, three levels of salinities; 10, 20 and 30 (control) psu were tested as well. Coral bleaching percentage and zooxanthellae density in the water column were observed every 6 hours during the period of 72 hours. The results showed that when coral exposed to the highest temperature (33 oC) under the lowest salinity (10 psu), 50-90% bleaching was found and higher symbiont densities in the water column were detected. These results suggested that the combination of the high temperature and low salinity had synergistic effects on coral bleaching and zooxanthellae.

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“…Interestingly, there is now growing evidence indicating that propionylcarnitine plays a crucial role in the cellular stress response to oxidative damage (Calabrese et al, 2009). As oxidative stress is a clear component of the bleaching process in corals following increases in sea surface temperatures (Lesser, 1997;Dias et al, 2019), further work assessing changes in this metabolite in corals is therefore warranted. Other metabolites identified in our study which were shown to significantly change between control and temperature stressed corals include the betaines, which have previously been linked with being photoprotective (Hill et al, 2010), nicotinamide, reported as a key metabolite in thermally stressed anemones (Hillyer et al, 2016) and D-(+)-proline, which has previously been shown to accumulate in corals under prolonged thermal stress (Williams et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

Species-Specific Variations in the Metabolomic Profiles of Acropora hyacinthus and Acropora millepora Mask Acute Temperature Stress Effects in Adult Coral Colonies

et al. 2021

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Coral reefs are suffering unprecedented declines in health state on a global scale. Some have suggested that human assisted evolution or assisted gene flow may now be necessary to effectively restore reefs and pre-condition them for future climate change. An understanding of the key metabolic processes in corals, including under stressed conditions, would greatly facilitate the effective application of such interventions. To date, however, there has been little research on corals at this level, particularly regarding studies of the metabolome of Scleractinian corals. Here, the metabolomic profiles [measured using 1H nuclear magnetic resonance spectroscopy (1H NMR) and ultra-high-performance liquid chromatography-mass spectrometry (LC-MS)] of two dominant reef building corals, Acropora hyacinthus and A. millepora, from two distinct geographical locations (Australia and Singapore) were characterized. We assessed how an acute temperature stress (an increase of 3.25°C ± 0.28 from ambient control levels over 8 days), shifted the corals’ baseline metabolomic profiles. Regardless of the profiling method utilized, metabolomic signatures of coral colonies were significantly distinct between coral species, a result supporting previous work. However, this strong species-specific metabolomic signature appeared to mask any changes resulting from the acute heat stress. On closer examination, we were able to discriminate between control and temperature stressed groups using a partial least squares discriminant analysis classification model (PLSDA). However, in all cases “late” components needed to be selected (i.e., 7 and 8 instead of 1 and 2), suggesting any treatment effect was small, relative to other sources of variation. This highlights the importance of pre-characterizing the coral colony metabolomes, and of factoring that knowledge into any experimental design that seeks to understand the apparently subtle metabolic effects of acute heat stress on adult corals. Further research is therefore needed to decouple these apparent individual and species-level metabolomic responses to climate change in corals.

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Oxidative stress on scleractinian coral fragments following exposure to high temperature and low salinity

Cited by 36 publications

References 120 publications

Effects of Microplastics Exposure on the Acropora sp. Antioxidant, Immunization and Energy Metabolism Enzyme Activities

Effects of Microplastics Exposure on the Acropora sp. Antioxidant, Immunization and Energy Metabolism Enzyme Activities

Effects of Temperature and Salinity on Coral Bleaching in Laboratory

Species-Specific Variations in the Metabolomic Profiles of Acropora hyacinthus and Acropora millepora Mask Acute Temperature Stress Effects in Adult Coral Colonies

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