微生物组的代谢能力通过功能冗余来缓冲类型损失
Kayla Cross1, Noelle Beckman2, Benjamin Jahnes3
1Department of Microbiology, Ohio State University, Columbus, Ohio, USA.
Applied and environmental microbiology
|January 30, 2025
概括
由于功能冗余,美国的肠道微生物群多样性丧失并没有影响代谢功能. 这凸显了在评估微生物群干扰后的健康状况时,考虑分类学和功能概况的重要性.
科学领域:
- 微生物生态学 微生物生态学
- 动物生理学 动物生理学
- 转基因组学是指转基因组学.
背景情况:
- 肠道微生物群在宿主健康中发挥着至关重要的作用,通过提供营养物质加工等基本服务.
- 肠道微生物组的干扰会导致种类和代谢功能的丧失,可能会影响宿主福祉.
- 功能冗余性,即多个微生物种群执行类似的代谢功能,可以缓冲物种丧失的负面影响.
研究的目的:
- 调查肠道微生物群类型多样性和饮食压力下的代谢能力之间的关系.
- 为了确定微生物组中的功能冗余是否能够保持代谢功能,尽管分类学多样性减少.
- 评估营养不平衡饮食对美国 (Periplaneta americana) 的肠道微生物群的影响.
主要方法:
- 食美国 (Periplaneta americana) 两种营养不平衡的饮食8周.
- 分析肠道微生物组的组成,使用16S rRNA基因安普利康测序.
- 使用PICRUSt2.2预测代谢途径丰富度
主要成果:
- 饮食干预减少了大约25%的肠道微生物群类型多样性.
- 尽管多样性减少,预测代谢途径的丰富性基本上没有受到影响.
- 功能冗余性,许多种类共享代谢功能,被观察到很高.
结论:
- 肠道微生物群因功能冗余而表现出对饮食干扰的弹性.
- 微生物种群的丧失和代谢功能的丧失之间存在非线性关系.
- 分类学和功能性微生物组资料对于了解扰动如何影响与宿主相关的微生物服务至关重要.
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