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<p>This study investigates how coral bleaching affects the structure and functions of archaea. Through metagenomic sequencing analysis, we conducted a detailed investigation into the community structure of archaea and carbon metabolism pathways in <i>Favites</i> sp. corals. The results indicate that coral bleaching significantly reduces the diversity and abundance of archaeal communities and functions (<i>p</i> &lt; 0.05). Venn diagrams and NMDS (non-metric multidimensional scaling) analysis reveal a significant decrease in the number of archaeal species and enzymes in bleached corals, along with notable changes in community structure. Dominant taxa include Thaumarchaeota, Euryarchaeota, and Candidatus Helarchaeota, with significant shifts observed under bleaching. KEGG functional annotation results reveal enhanced carbon fixation pathways and reduced functionality in glycolysis, the pentose phosphate pathway, and methane metabolism in bleached corals. Within bleached corals, the abundance of some dominant enzymes increases, while that of most others decreases across multiple metabolic pathways. These findings highlight the significant impact of coral bleaching on archaeal communities and metabolic functions, offering new insights into how coral ecosystems respond to environmental stress.</p>

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Impact of coral bleaching on the archaeal community and carbon metabolic functions

  • 期刊论文

  • 发表日期：

    2025年3月14日

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  • Fulin Sun,
  • Hongqiang Yang,
  • Fei Tan,
  • Xiyang Zhang,
  • Mingzhuang Wang,
  • Guan Wang,
  • Qi Shi

摘要

This study investigates how coral bleaching affects the structure and functions of archaea. Through metagenomic sequencing analysis, we conducted a detailed investigation into the community structure of archaea and carbon metabolism pathways in Favites sp. corals. The results indicate that coral bleaching significantly reduces the diversity and abundance of archaeal communities and functions (p < 0.05). Venn diagrams and NMDS (non-metric multidimensional scaling) analysis reveal a significant decrease in the number of archaeal species and enzymes in bleached corals, along with notable changes in community structure. Dominant taxa include Thaumarchaeota, Euryarchaeota, and Candidatus Helarchaeota, with significant shifts observed under bleaching. KEGG functional annotation results reveal enhanced carbon fixation pathways and reduced functionality in glycolysis, the pentose phosphate pathway, and methane metabolism in bleached corals. Within bleached corals, the abundance of some dominant enzymes increases, while that of most others decreases across multiple metabolic pathways. These findings highlight the significant impact of coral bleaching on archaeal communities and metabolic functions, offering new insights into how coral ecosystems respond to environmental stress.