中央碳代谢在化与温带珊瑚礁病毒社区的转换
Jacob Kelman1,2, Meena Khan1,2, Chibundu Umunna1,2
1Department of Ecology and Evolutionary Biology, University of California, Los Angeles, California 90095, USA.
bioRxiv : the preprint server for biology
|October 3, 2025
概括
病毒代谢影响珊瑚礁的健康. 流感病毒抑制了健康珊瑚礁上的细菌过度生长,而温带病毒则加速了退化珊瑚礁上的细菌过度生长,影响了珊瑚礁的弹性.
科学领域:
- 海洋微生物学 海洋微生物学
- 珊瑚礁生态 珊瑚礁生态
- 病毒生态学 病毒生态学
背景情况:
- 珊瑚礁面临着由于细菌过度生长 (微生物化) 的全球衰退.
- 菌体在控制微生物化的作用及其代谢影响尚不清楚.
- 病毒性生活方式 (Lytic与温和) 与宿主生理状态有关.
研究的目的:
- 研究菌体在珊瑚礁健康中的代谢作用.
- 分析来自健康和退化珊瑚礁的病毒社区中中央碳代谢基因频率.
- 了解病毒代谢如何影响细菌的增殖和生态系统状态.
主要方法:
- 从中太平洋珊瑚礁的病毒转基因组中分析中央碳代谢基因频率.
- 基因频率的比较,健康的珊瑚礁 (以石质为主) 和退化的珊瑚礁 (以温度为主) 之间的基因频率.
- 定性隔间建模以揭示生态系统状态.
主要成果:
- 病毒的新陈代谢从退化珊瑚礁上的性反应 (构建中间体) 转变为健康珊瑚礁上的代谢反应 (消耗中间体).
- 退化的珊瑚礁显示出Entner-Doudoroff (ED) 糖解基因的过度代表性.
- 健康的珊瑚礁显示出酸通路 (PPP) 和还原性三碳酸 (TCA) 循环基因的过度代表性.
结论:
- 在健康的珊瑚礁上的Lytic病毒代谢增强病毒的产生,并抑制细菌的过度生长.
- 在退化的珊瑚礁上,温和的病毒代谢加速了细菌的增殖,导致珊瑚礁的衰退.
- 代谢介导的"再病毒化"为珊瑚礁弹性提供了一个新的保护策略.
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