Physiological acclimation to elevated temperature in a reef-building coral from an upwelling environment

Mayfield, Anderson B.; Fan, Tung‐Yung; Chen, C.-S.

doi:10.1007/s00338-013-1067-4

Cited by 58 publications

(73 citation statements)

References 40 publications

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“…Most studies, however, concentrate on the influence of increased temperatures (e.g., Brown et al 2000;Oliver and Palumbi 2011;Barshis et al 2013). Yet studies on corals influenced by cold water fluctuations have indicated that these corals exhibit enhanced heat resistance due to supposed acclimations to recurring stress (Putnam et al 2010;Mayfield et al 2013). This study concords with this hypothesis, since LAIW-exposed corals used to large short-term variations in temperature were less affected by variations from longterm average temperatures than sheltered corals (see also McClanahan et al 2007a;Oliver and Palumbi 2011).…”

Section: Discussionsupporting

confidence: 69%

Large-amplitude internal waves sustain coral health during thermal stress

et al. 2016

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Ocean warming is a major threat for coral reefs causing widespread coral bleaching and mortality. Potential refugia are thus crucial for coral survival. Exposure to large-amplitude internal waves (LAIW) mitigated heat stress and ensured coral survival and recovery during and after an extreme heat anomaly. The physiological status of two common corals, Porites lutea and Pocillopora meandrina, was monitored in host and symbiont traits, in response to LAIW-exposure throughout the unprecedented 2010 heat anomaly in the Andaman Sea. LAIW-exposed corals of both species survived and recovered, while LAIW-sheltered corals suffered partial and total mortality in P. lutea and P. meandrina, respectively. LAIW are ubiquitous in the tropics and potentially generate coral refuge areas. As thermal stress to corals is expected to increase in a warming ocean, the mechanisms linking coral bleaching to ocean dynamics will be crucial to predict coral survival on a warming planet.

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Section: Discussionsupporting

confidence: 69%

Large-amplitude internal waves sustain coral health during thermal stress

et al. 2016

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“…It should be mentioned, however, that the in vivo biomass ratio may not necessarily approximate the mRNA ratio; it is likely that the former is closer to 50/50% for many anthozoan–dinoflagellate endosymbioses based on microscopic images of Symbiodinium in hospite (Chen et al. 2012; Mayfield et al. 2013b), in which the majority of the gastrodermal volume is occupied by these dinoflagellates.…”

Section: Discussionmentioning

confidence: 99%

Compartment‐specific transcriptomics in a reef‐building coral exposed to elevated temperatures

et al. 2014

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Although rising ocean temperatures threaten scleractinian corals and the reefs they construct, certain reef corals can acclimate to elevated temperatures to which they are rarely exposed in situ. Specimens of the model Indo-Pacific reef coral Pocillopora damicornis collected from upwelling reefs of Southern Taiwan were previously found to have survived a 36-week exposure to 30°C, a temperature they encounter infrequently and one that can elicit the breakdown of the coral–dinoflagellate (genus Symbiodinium) endosymbiosis in many corals of the Pacific Ocean. To gain insight into the subcellular pathways utilized by both the coral hosts and their mutualistic Symbiodinium populations to acclimate to this temperature, mRNAs from both control (27°C) and high (30°C)-temperature samples were sequenced on an Illumina platform and assembled into a 236 435-contig transcriptome. These P. damicornis specimens were found to be ∼60% anthozoan and 40% microbe (Symbiodinium, other eukaryotic microbes, and bacteria), from an mRNA-perspective. Furthermore, a significantly higher proportion of genes from the Symbiodinium compartment were differentially expressed after two weeks of exposure. Specifically, at elevated temperatures, Symbiodinium populations residing within the coral gastrodermal tissues were more likely to up-regulate the expression of genes encoding proteins involved in metabolism than their coral hosts. Collectively, these transcriptome-scale data suggest that the two members of this endosymbiosis have distinct strategies for acclimating to elevated temperatures that are expected to characterize many of Earth's coral reefs in the coming decades.

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“…During the three-week acclimation period, the experimentally fragmented coral nubbins were exposed to shaded, natural light (∼90 mol photons m −2 s −1 ). Artificial lights were utilized and set to a 12 hr light (∼90 mol photons m −2 s −1 )-12 hr dark cycle during the one-week experiment that followed [4], meaning that the light profile did not vary over the daytime portion of the diel cycle during the experiment, as it would in situ (see Figure 1 of [20]). Despite this utilization of a stable light regime characterized by the same average hourly PAR level that these corals experience in situ [4], corals from each of the two sites were expected to be affected similarly by this transplant from a fluctuating to a stable light regime.…”

Section: Coral Collection Manipulative Experiment and Physiologicalmentioning

confidence: 99%

The Impacts ofEx SituTransplantation on the Physiology of the Taiwanese Reef-Building CoralSeriatopora hystrix

Mayfield

Fan

Chen

2013

Journal of Marine Biology

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We sought to determine whether the Indo-Pacific reef-building coral Seriatopora hystrix performs in a similar manner in the laboratory as it does in situ by measuring Symbiodinium density, chlorophyll a (chl-a) concentration, and the maximum quantum yield of photosystem II ( / ) at the time of field sampling (in situ), as well as after three weeks of acclimation and one week of experimentation (ex situ). Symbiodinium density was similar between corals of the two study sites, Houbihu (an upwelling reef) and Houwan (a nonupwelling reef), and also remained at similar levels ex situ as in situ. On the other hand, both areal and cell-specific chl-a concentrations approximately doubled ex situ relative to in situ, an increase that may be due to having employed a light regime that differed from that experienced by these corals on the reefs of southern Taiwan from which they were collected. As this change in Symbiodinium chl-a content was documented in corals of both sites, the experiment itself was not biased by this difference. Furthermore, / increased by only 1% ex situ relative to in situ, indicating that the corals maintained a similar level of photosynthetic performance as displayed in situ even after one month in captivity.

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Physiological acclimation to elevated temperature in a reef-building coral from an upwelling environment

Cited by 58 publications

References 40 publications

Large-amplitude internal waves sustain coral health during thermal stress

Large-amplitude internal waves sustain coral health during thermal stress

Compartment‐specific transcriptomics in a reef‐building coral exposed to elevated temperatures

The Impacts ofEx SituTransplantation on the Physiology of the Taiwanese Reef-Building CoralSeriatopora hystrix

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