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<p>The coral-killing sponge, <i>Terpios hoshinota</i>, poses a significant ecological threat to coral reefs, exhibiting rapid expansion and competitive overgrowth. Despite its invasiveness, the genomic basis underlying its adaptability and resilience remains largely unexplored. Here, we present a high-quality genome assembly of <i>T. hoshinota</i>, comprising 169.4&#xa0;Mb with 40,945 predicted genes. Phylogenomic analysis estimated its divergence from other demosponges during the Ordovician (~ 471&#xa0;million years ago), even though its simple morphology suggests a more ancient evolutionary origin. Comparative genomic analyses revealed enrichment of genes related to substrate adhesion, innate immunity, and developmental pathways, including expansions of Wnt signaling, homeobox genes, and cell migration gene ontologies which may contribute to its aggressive growth and resilience. Transcriptomic responses under simulated climate stress conditions (heat stress at 31&#xa0;°C and acidification at 700 ppm pCO₂) indicated dynamic gene regulation, with upregulation of neurotransmitter metabolism, cellular maintenance, and ion homeostasis responses. Despite these stressors, it remained stable. This suggests that <i>T. hoshinota</i> exhibits strong adaptability and resilience through rapid gene regulation. In conclusion, these findings provide molecular insights into <i>T. hoshinota</i>’s ecological success, its potential expansion under climate change, and its broader impact on coral reef ecosystems.</p>

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Genomic analysis reveals broad adaptability of coral-killing sponge (Terpios hoshinota) under environmental stress

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月26日

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  • Po-Yu Liu,
  • Wei-Chih Chiu,
  • Sim Lin Lim,
  • Hsing-Ju Chen,
  • Yu-Hsiang Chen,
  • Hsiang-Iu Wang,
  • Cheng-Yu Yang,
  • Chi-Chun Chen,
  • Yoko Nozawa,
  • Hideyuki Yamashiro,
  • Kazuhiko Sakai,
  • Sen-Lin Tang

摘要

The coral-killing sponge, Terpios hoshinota, poses a significant ecological threat to coral reefs, exhibiting rapid expansion and competitive overgrowth. Despite its invasiveness, the genomic basis underlying its adaptability and resilience remains largely unexplored. Here, we present a high-quality genome assembly of T. hoshinota, comprising 169.4 Mb with 40,945 predicted genes. Phylogenomic analysis estimated its divergence from other demosponges during the Ordovician (~ 471 million years ago), even though its simple morphology suggests a more ancient evolutionary origin. Comparative genomic analyses revealed enrichment of genes related to substrate adhesion, innate immunity, and developmental pathways, including expansions of Wnt signaling, homeobox genes, and cell migration gene ontologies which may contribute to its aggressive growth and resilience. Transcriptomic responses under simulated climate stress conditions (heat stress at 31 °C and acidification at 700 ppm pCO₂) indicated dynamic gene regulation, with upregulation of neurotransmitter metabolism, cellular maintenance, and ion homeostasis responses. Despite these stressors, it remained stable. This suggests that T. hoshinota exhibits strong adaptability and resilience through rapid gene regulation. In conclusion, these findings provide molecular insights into T. hoshinota’s ecological success, its potential expansion under climate change, and its broader impact on coral reef ecosystems.