Insights into the occurrence of phylosymbiosis and co-phylogeny in the holobionts of octocorals from the Mediterranean Sea and Red Sea.

IF 4.9 Q1 MICROBIOLOGY
C Prioux, C Ferrier-Pages, J Deter, R Tignat-Perrier, A Guilbert, L Ballesta, D Allemand, J A J M van de Water
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引用次数: 0

Abstract

Background: Corals are the foundational species of coral reefs and coralligenous ecosystems. Their success has been linked to symbioses with microorganisms, and a coral host and its symbionts are therefore considered a single entity, called the holobiont. This suggests that there may be evolutionary links between corals and their microbiomes. While there is evidence of phylosymbiosis in scleractinian hexacorals, little is known about the holobionts of Alcyonacean octocorals.

Results: 16S rRNA gene amplicon sequencing revealed differences in the diversity and composition of bacterial communities associated with octocorals collected from the mesophotic zones of the Mediterranean and Red Seas. The low diversity and consistent dominance of Endozoicomonadaceae and/or Spirochaetaceae in the bacterial communities of Mediterranean octocorals suggest that these corals may have a shared evolutionary history with their microbiota. Phylosymbiotic signals were indeed detected and cophylogeny in associations between several bacterial strains, particularly those belonging to Endozoicomonadaceae or Spirochaetaceae, and coral species were identified. Conversely, phylosymbiotic patterns were not evident in Red Sea octocorals, likely due to the high bacterial taxonomic diversity in their microbiota, but cophylogeny in associations between certain coral and bacterial species was observed. Noteworthy were the associations with Endozoicomonadaceae, suggesting a plausible evolutionary link that warrants further investigations to uncover potential underlying patterns.

Conclusions: Overall, our findings emphasize the importance of Endozoicomonadaceae and Spirochaetaceae in coral symbiosis and the significance of exploring host-microbiome interactions in mesophotic ecosystems for a comprehensive understanding of coral-microbiome evolutionary history.

洞察地中海和红海章鱼全生体中的共生现象和共系统发育。
背景:珊瑚是珊瑚礁和珊瑚原生生态系统的基础物种。它们的成功与微生物共生有关,因此珊瑚宿主及其共生体被视为一个整体,称为整体生物体(holobiont)。这表明珊瑚与其微生物组之间可能存在进化联系。虽然有证据表明硬骨六孔珊瑚中存在系统共生关系,但对八孔藻类的整体共生体却知之甚少:结果:16S rRNA 基因扩增子测序显示,从地中海和红海中生带收集到的章鱼相关细菌群落的多样性和组成存在差异。地中海章鱼细菌群落中内生单胞菌科(Endozoicomonadaceae)和/或螺旋藻科(Spirochaetaceae)的低多样性和持续优势表明,这些珊瑚可能与其微生物群落有着共同的进化历史。确实检测到了系统共生信号,并确定了一些细菌菌株(尤其是属于内生单胞菌科或螺旋藻科的细菌菌株)与珊瑚物种之间的同源关系。相反,系统共生模式在红海八珊瑚中并不明显,这可能是由于其微生物群中细菌分类多样性较高,但在某些珊瑚和细菌物种之间的关联中观察到了同源关系。值得注意的是与内生单胞菌科(Endozoicomonadaceae)的关联,这表明它们之间存在着一种似是而非的进化联系,值得进一步研究以发现潜在的潜在模式:总之,我们的发现强调了内生单胞菌科(Endozoicomonadaceae)和螺旋藻科(Spirochaetaceae)在珊瑚共生中的重要性,以及探索中生生态系统中宿主与微生物组之间的相互作用对于全面了解珊瑚与微生物组进化史的意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.20
自引率
0.00%
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审稿时长
13 weeks
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