气候变化领域集成服务门户(CCPortal): Algal symbiont diversity in Acropora muricata from the extreme reef of Bourake associated with resistance to coral bleaching

CCPortal

DOI	10.1371/journal.pone.0296902
	Algal symbiont diversity in Acropora muricata from the extreme reef of Bourake associated with resistance to coral bleaching
	Alessi, Cinzia; Lemonnier, Hugues; Camp, Emma F.; Wabete, Nelly; Payri, Claude; Metalpa, Riccardo Rodolfo
发表日期	2024
ISSN	1932-6203
起始页码	19
结束页码	2
卷号	19 期号:2
英文摘要	Widespread coral bleaching has generally been linked to high water temperatures at larger geographic scales. However, the bleaching response can be highly variable among individual of the same species, between different species, and across localities; what causes this variability remains unresolved. Here, we tracked bleached and non-bleached colonies of Acropora muricata to see if they recovered or died following a stress event inside the semi-enclosed lagoon of Bourake (New Caledonia), where corals are long-term acclimatized to extreme conditions of temperature, pH and dissolved oxygen, and at a nearby control reef where conditions are more benign. We describe Symbiodiniaceae community changes based on next-generation sequencing of the ITS2 marker, metabolic responses, and energetic reserve measures (12 physiological traits evaluated) during the La Nina warm and rainy summer in 2021. Widespread coral bleaching (score 1 and 2 on the coral colour health chart) was observed only in Bourake, likely due to the combination of the high temperatures (up to 32 degrees C) and heavy rain. All colonies (i.e., Bourake and reference site) associated predominantly with Symbiodinaceae from the genera Cladocopium. Unbleached colonies in Bourake had a specific ITS2-type profile (proxies for Symbiodiniaceae genotypes), while the bleached colonies in Bourake had the same ITS2-type profile of the reef control colonies during the stress event. After four months, the few bleached colonies that survived in Bourake (B2) acquired the same ITS2 type profiles of the unbleached colonies in Bourake. In terms of physiological performances, all bleached corals showed metabolic depression (e.g., P-gross and R-dark). In contrast, unbleached colonies in Bourake maintained higher metabolic rates and energetic reserves compared to control corals. Our study suggests that Acropora muricata enhanced their resistance to bleaching thanks to specific Symbiodiniaceae associations, while energetic reserves may increase their resilience after stress.
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001181689500010
来源期刊	PLOS ONE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302782
作者单位	Universite Nouvelle Caledonie; Ifremer; Institut de Recherche pour le Developpement (IRD); Institut de Recherche pour le Developpement (IRD); University of Technology Sydney
推荐引用方式 GB/T 7714	Alessi, Cinzia,Lemonnier, Hugues,Camp, Emma F.,et al. Algal symbiont diversity in Acropora muricata from the extreme reef of Bourake associated with resistance to coral bleaching[J],2024,19(2).
APA	Alessi, Cinzia,Lemonnier, Hugues,Camp, Emma F.,Wabete, Nelly,Payri, Claude,&Metalpa, Riccardo Rodolfo.(2024).Algal symbiont diversity in Acropora muricata from the extreme reef of Bourake associated with resistance to coral bleaching.PLOS ONE,19(2).
MLA	Alessi, Cinzia,et al."Algal symbiont diversity in Acropora muricata from the extreme reef of Bourake associated with resistance to coral bleaching".PLOS ONE 19.2(2024).