在冷保存期间评估珊瑚微生物组
Tori Jefferson1, E Michael Henley2, Patrick M Erwin3
1University of North Carolina Wilmington, 601 S. College Road, Wilmington, NC, 28403, USA.
Cryobiology
|August 26, 2024
概括
珊瑚冷保存影响珊瑚微生物群. 该研究发现,同位素玻璃化显著减少了有益的Endozoicomonadaceae,并增加了潜在的有害的Vibrionaceae,表明了dysbiosis. 益生菌可能有助于在冷保存后恢复珊瑚健康.
科学领域:
- 海洋生物学 海洋生物学
- 微生物学 微生物学
- 保护科学 保护科学
背景情况:
- 珊瑚礁面临着气候变化和人类造成的压力因素的重大威胁.
- 珊瑚冷保存是保护受威胁的珊瑚多样性的潜在策略.
- 珊瑚微生物组在宿主健康中起着至关重要的作用,但其对冷保存的反应尚不清楚.
研究的目的:
- 调查冷保存对 Porites compressa.珊瑚相关细菌群落的影响.
- 在同位素玻璃化过程中识别微生物组合的变化.
- 为减少冷保存引起的压力和改善珊瑚养殖的战略提供信息.
主要方法:
- 野生夏威夷指纹珊瑚 (Porites compressa) 的微生物组的特征.
- 在同位素玻璃化过程的七个阶段对微生物群落的分析.
- 16S rRNA基因测序以评估细菌群体的组成和相对丰富度.
主要成果:
- 野生P. compressa的微生物群主要由内生菌群 (76.5%) 主导.
- 在囚禁状态下 (<6.9%) 和同位素玻璃化后 (<0.5%),Endozoicomonadaceae的丰度显著下降.
- 在解后,Vibrionaceae 成为占主导地位的 (58.5-74.7%),这表明存在生物失调.
结论:
- 捕获和冷保存过程会诱导珊瑚微生物群的生物失调.
- 冷保存导致有益的共生体的丧失,并增加潜在的病原体.
- 益生菌修复治疗可以减轻冷保存压力,并提高解后的珊瑚生存率.
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