Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification

Ge, Ruiqi; Liang, Jiayuan; Yu, Kefu; Chen, Biao; Deng, Chuanqi; Chen, Jinni; Xu, Yongqian; Qin, Liangyun

doi:10.3389/fmicb.2021.767174

Cited by 11 publications

(7 citation statements)

References 98 publications

(124 reference statements)

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“…Corals associated with Cladocopium goreaui (C1) have previously shown elevated photosynthetic efficiency (Cantin et al, 2009;Morgans et al, 2020). It is therefore possible that elevated photosynthesis is a common trait within some taxa from the C1 radiation and may explain the higher photosynthetic efficiency mechanism of C1 to face OA as observed by Ge et al (2021) inAcropora valida . The elevated photosynthetic capacity of A. tenuis in Bouraké, coupled with the dominance of major ITS2 sequence C1, could explain their significantly higher growth rates, as previously observed in A. tenuis juveniles (Cantin et al, 2009;Little et al, 2004).…”

Section: Does Their Symbiodiniaceae Community Raise the Physiology Of...mentioning

confidence: 99%

Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities

Tanvet¹,

Camp

Sutton³

et al. 2022

Preprint

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Ocean acidification (OA) is a severe threat to coral reefs mainly by reducing their calcification rate. Identifying the resilience factors of corals to decreasing seawater pH is of paramount importance to predict the survivability of coral reefs in the future. This study compared corals adapted to variable pH (i.e., 7.23-8.06 pH units) from the semi-enclosed lagoon of Bouraké, New Caledonia, to corals adapted to more stable seawater pH (i.e., 7.90-8.18 pH units). In a 100-day aquarium experiment, we examined the physiological response and genetic diversity of Symbiodiniaceae from three coral species (Acropora tenuis, Montipora digitata and Porites sp.) from both sites under three stable pH conditions (i.e., 8.11, 7.76, 7.54 pH units) and fluctuating pH conditions (i.e., between 7.56 and 8.07 pH units). Bouraké corals consistently exhibited higher growth rates than corals from the stable pH environment, with specific ITS2 intragenomic variant profiles. While OA generally decreased coral calcification by ca. 16%, Bouraké coralsshowed higher growth rates (21 to 93% increase, depending on species with all pH conditions pooled) than those from the stable pH environment. This superior performance coincided with divergent ITS2-like profiles with better consistency for both variable and low pH conditions. This response was not gained by corals from the more stable environment exposed to variable pH during the four-month experiment, suggesting that such a kind of plasticity is time dependent. Future long-term experiments should address the exposure duration required to confer fitness benefits for sustained calcification, hopefully fast enough to cope with the ongoing rapid OA.

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Section: Does Their Symbiodiniaceae Community Raise the Physiology Of...mentioning

confidence: 99%

Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities

Tanvet¹,

Camp

Sutton³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Interestingly, however, Bouraké corals exhibited more consistent major ITS2‐type profiles between replicate colonies at low and variable pH than corals from the reference site. Microbiome stability (both for symbionts and/or bacteria) was linked to greater physiological resilience to OA (Ge et al, 2021 ; Grottoli et al, 2018 ; Quigley et al, 2017 , 2019 ; Ros et al, 2021 ), suggesting that consistent major ITS2‐type profiles for Bouraké corals under pH treatments could facilitate their success; however, further work will be needed to verify this hypothesis.…”

Section: Discussionmentioning

confidence: 99%

“…Corals associated with Cladocopium goreaui (C1) have previously shown elevated photosynthetic efficiency with regard to other Symbiodiniaceae species (Cantin et al, 2009;Morgans et al, 2020;Stat, Morris, & Gates, 2008;Wall et al, 2020). It is therefore possible that elevated photosynthesis is a common trait within some taxa from the C1 radiation and may explain the higher photosynthetic efficiency mechanism of C1 to face OA as observed by Ge et al (2021) in Acropora valida. The elevated photosynthetic capacity of A. tenuis in Bouraké, coupled with the dominance of major ITS2 sequence C1, could explain their significantly higher growth rates, as previously observed in A. tenuis juveniles (Cantin et al, 2009;Little et al, 2004).…”

Section: Does Their Symbiodiniaceae Community Raise the Physiology Of...mentioning

confidence: 98%

Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities

Tanvet

Camp

Sutton

et al. 2023

Ecology and Evolution

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Ocean acidification (OA) is a severe threat to coral reefs mainly by reducing their calcification rate. Identifying the resilience factors of corals to decreasing seawater pH is of paramount importance to predict the survivability of coral reefs in the future. This study compared corals adapted to variable pHT (i.e., 7.23–8.06) from the semi‐enclosed lagoon of Bouraké, New Caledonia, to corals adapted to more stable seawater pHT (i.e., 7.90–8.18). In a 100‐day aquarium experiment, we examined the physiological response and genetic diversity of Symbiodiniaceae from three coral species (Acropora tenuis, Montipora digitata, and Porites sp.) from both sites under three stable pHNBS conditions (8.11, 7.76, 7.54) and one fluctuating pHNBS regime (between 7.56 and 8.07). Bouraké corals consistently exhibited higher growth rates than corals from the stable pH environment. Interestingly, A. tenuis from Bouraké showed the highest growth rate under the 7.76 pHNBS condition, whereas for M. digitata, and Porites sp. from Bouraké, growth was highest under the fluctuating regime and the 8.11 pHNBS conditions, respectively. While OA generally decreased coral calcification by ca. 16%, Bouraké corals showed higher growth rates than corals from the stable pH environment (21% increase for A. tenuis to 93% for M. digitata, with all pH conditions pooled). This superior performance coincided with divergent symbiont communities that were more homogenous for Bouraké corals. Corals adapted to variable pH conditions appear to have a better capacity to calcify under reduced pH compared to corals native to more stable pH condition. This response was not gained by corals from the more stable environment exposed to variable pH during the 100‐day experiment, suggesting that long‐term exposure to pH fluctuations and/or differences in symbiont communities benefit calcification under OA.

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“…In addition, the circle size of ocean acidification is larger than that of nutrient and most other keywords in Figure 4. However, recent indoor studies demonstrated that Symbiodiniaceae community composition was hardly affected by ocean acidification, suggesting that more field studies on Symbiodiniaceae responses to ocean acidification are required while considering the experimental period and acidification intensity (Ge et al, 2021;Zhou et al, 2021). It is worth mentioning that a field with relatively limited research is not necessarily an unpopular field but can be the latest research field.…”

Section: Co-occurrence Of the Abstract From Coral Or Symbiodiniaceae ...mentioning

confidence: 99%

Coral bleaching from a nutrient perspective is understudied: A bibliometric survey

Huang

et al. 2022

Front. Mar. Sci.

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How coral–Symbiodiniaceae mutualistic symbiosis is established, maintained, and disrupted is arguably the most fundamental and central area of coral research. The breakdown of this symbiosis, and consequent coral bleaching, have been frequently attributed to thermal stress, although microbial attack and pollution have also been blamed. Despite the perceived intense and broad research, it is unclear whether all the potential causes have been given adequate attention and whether some important areas have been overlooked. This work aims to comprehensively review the literature on coral and Symbiodiniaceae research and provide a portrait of the current coral research landscape, hence identifying areas that require more research effort. Data of publication output were extracted from the Web of Science (WoS) from 1986 to 2022 by using the keywords “coral” and “Symbiodiniaceae.” A total of 43,089 and 3,191 papers in the coral and Symbiodiniaceae were identified, mostly published after 2002. The journal Coral Reefs was ranked first regarding the total number of publications on coral or Symbiodiniaceae. The USA, Australia, and China were the top three countries in the number of publications. The network co-occurrence analysis of all keywords in coral and Symbiodiniaceae using VOSviewer showed that biodiversity, climate change, nutrient, and survival were the central research areas in coral and Symbiodiniaceae. Among them, climate change was the most invested research field, as revealed by the high proportion of published literature, while nutrient was the most understudied area. Thematic evolution analysis revealed that nutrient enrichment combined with elevated temperature was an emerging research field about coral and Symbiodiniaceae. Besides, nitrogen is currently the most studied nutrient. The findings from this study shed light on the trends of coral and Symbiodiniaceae research in the past 36 years, current research hotspots in the field, and areas that need more research investment going forward.

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Regulation of the Coral-Associated Bacteria and Symbiodiniaceae in Acropora valida Under Ocean Acidification

Cited by 11 publications

References 98 publications

Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities

Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities

Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities

Coral bleaching from a nutrient perspective is understudied: A bibliometric survey

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