Differential impact of heat stress on reef-building corals under different light conditions

Rosic, Nedeljka; Rémond, Camille; Mello-Athayde, Matheus A.

doi:10.1016/j.marenvres.2020.104947

Cited by 23 publications

(17 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SST and PAR synergistically impact coral physiological stress (Rosic et al., 2020) and were correlated with DMS w concentration in the GBR. Both field and laboratory analyses have demonstrated an increase in intracellular and dissolved DMS(P) production from corals and in reef seawaters in response to increasing temperature and solar irradiance (Deschaseaux et al., 2014b; Gardner et al., 2016; Jones et al., 2007), until a coral physiological tolerance threshold is approached (Jones et al., 2007, 2018).…”

Section: Discussionmentioning

confidence: 99%

Parameterizing the Impact of Seawater Temperature and Irradiance on Dimethylsulfide (DMS) in the Great Barrier Reef and the Contribution of Coral Reefs to the Global Sulfur Cycle

et al. 2021

View full text Add to dashboard Cite

Aerosols and clouds play a key role in the Earth's radiative budget and climate. The influence of anthropogenic greenhouse gas (GHG) emissions on the radiative balance is relatively well understood and is estimated to have exerted an average global warming effect of 2.3 W m −2 over the industrial period (IPCC, 2014). Anthropogenic and natural aerosols offset this warming effect by −0.9 W m −2 (−1.9 to −0.1 W m −2) through scattering of shortwave radiation and increasing the albedo, lifetime, and cover of clouds (Andreae, 1995; IPCC, 2014; Twomey, 1974). However, the radiative effects of natural aerosols and their role in climate is complex and less well understood. Approximately 45% of the variance in aerosol radiative forcing is derived

show abstract

Section: Discussionmentioning

confidence: 99%

Parameterizing the Impact of Seawater Temperature and Irradiance on Dimethylsulfide (DMS) in the Great Barrier Reef and the Contribution of Coral Reefs to the Global Sulfur Cycle

et al. 2021

View full text Add to dashboard Cite

show abstract

“…However, bleaching is mainly observed under high UVR doses. On the contrary, the daily dose of UVR used in this study is lower, and corresponds to that received by coral colonies around 15 m depth (Barron et al, 2009;Overmans and Agustí, 2020;Rosic et al, 2020). Taken all together, these observations suggest that the effect of UVR on coral physiology is dose-dependent and that low levels of UVR may enhance coral photosynthesis by increasing cellular chlorophyll content or enhancing the carbonic anhydrase activity.…”

Section: Low Doses Of Uvr Are Beneficial To Corals Both Under Thermal Stress or Nitrate Enrichmentmentioning

confidence: 48%

“…Such doses can be considered low compared to those received by corals on shallow reefs, which can reach more than 350 Wd -1 UVA and 19 Wd -1 UVB (Barron et al, 2009;Overmans and Agustí, 2020). In these reefs, in summer, peaks of 60 to 70 Wm -2 UVA and 3 Wm -2 UVB can occur at midday (Kaneohe Bay, Hawaii and Heron Island, Australia) (Rosic et al, 2020;Torregiani and Lesser, 2007). Our conditions, therefore, correspond to tropical corals living at 15 m depth, where UVR levels are significantly reduced.…”

Section: Experimental Designmentioning

confidence: 99%

“…While the thermotolerance threshold of corals is generally decreased under exposure to high PAR or UVR levels (Downs et al, 2013;Lesser and Farrell, 2004;Torregiani and Lesser, 2007), the contrary has also been observed (Halac et al, 2010;McCauley et al, 2018;Rosic et al, 2020). For example, Rosic et al (2020) showed a synergetic effect of low PAR (no UVR exposure) and thermal stress that caused higher bleaching levels of the scleractinian coral Acropora millepora compared to thermal stress and high PAR. Antagonistic interactions of temperature and UVR were also observed on Caribbean octocorals (McCauley et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…UVR can penetrate the water column down to 150 m depth in very oligotrophic waters (Barron et al, 2009;Kahng et al, 2019;Tedetti and Sempéré, 2006). While the thermotolerance threshold of corals is generally decreased under exposure to high PAR or UVR levels (Downs et al, 2013;Lesser and Farrell, 2004;Torregiani and Lesser, 2007), the contrary has also been observed (Halac et al, 2010;McCauley et al, 2018;Rosic et al, 2020). For example, Rosic et al (2020) showed a synergetic effect of low PAR (no UVR exposure) and thermal stress that caused higher bleaching levels of the scleractinian coral Acropora millepora compared to thermal stress and high PAR.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low levels of ultra-violet radiation mitigate the deleterious effects of nitrate and thermal stress on coral photosynthesis

Blanckaert

Marangoni

Rottier

et al. 2021

Marine Pollution Bulletin

View full text Add to dashboard Cite

GTPases of immunity associated proteins in the dinoflagellate Breviolum minutum are involved in the response to thermal stress and low light levels

Cantrell,

Martin,

Stiers

et al. 2024

Mar Biol

View full text Add to dashboard Cite

Guanosine Triphosphate (GTP)ases of Immunity Associated Proteins (GIMAP) are small G proteins that in vertebrates, regulate immunity, apoptosis, and autophagy. While previously thought to be limited to vertebrates and plants, this family of proteins was recently characterized in a diversity of dinoflagellates. However, information regarding the function of GIMAPs in dinoflagellates is lacking. Therefore, the goal of this study (conducted from March-November of 2022) was to assess the expression of GIMAPs in the cnidarian symbiont Breviolum minutum (formerly Symbiodinium minutum, referred to as Bm_GIMAPs) in response to low light (25 vs 8 μmol m−2 s−1 for 9 d), thermal stress (22 vs 28 °C for 48 h), and symbiotic state (cultured vs in hospite). These factors were selected due to their importance in the lifestyle of a photosynthetic symbiont and relevance to the ecologically important issue of coral bleaching. The results indicate Bm_GIMAP expression increased under both low light and elevated temperature, suggesting a role in the response to bleaching related stressors. Cultured B. minutum had lower baseline Bm_GIMAP expression than those in association with a cnidarian host, but a stronger response to thermal stress, suggesting their function is influenced by symbiosis. Lastly, further support for the responsiveness of GIMAPs to thermal stress was provided by a comparison with previously published RNA-seq data from cultured Symbiodiniaceae. Collectively, the results presented here represent the first functional investigation of GIMAPs in an ecologically important group of protists and provide a greater understanding of the molecular response of dinoflagellates to stressors related to bleaching.

show abstract

Differential impact of heat stress on reef-building corals under different light conditions

Cited by 23 publications

References 50 publications

Parameterizing the Impact of Seawater Temperature and Irradiance on Dimethylsulfide (DMS) in the Great Barrier Reef and the Contribution of Coral Reefs to the Global Sulfur Cycle

Parameterizing the Impact of Seawater Temperature and Irradiance on Dimethylsulfide (DMS) in the Great Barrier Reef and the Contribution of Coral Reefs to the Global Sulfur Cycle

Low levels of ultra-violet radiation mitigate the deleterious effects of nitrate and thermal stress on coral photosynthesis

GTPases of immunity associated proteins in the dinoflagellate Breviolum minutum are involved in the response to thermal stress and low light levels

Contact Info

Product

Resources

About