超越宿主:揭示马类胃肠道线虫的独立微生物组
Fabio Gentilini1, Tolulope Grace Ogundipe1, Maria Elena Turba2
1Department of Veterinary Medical Sciences (DIMEVET), University of Bologna, Ozzano dell´Emilia (Bo) Italy.
PloS one
|February 10, 2026
概括
马类胃肠道线虫拥有独特的微生物组,与它们的宿主不同. 了解这些寄生虫相关的微生物为新的感染控制策略提供了潜力.
科学领域:
- 微生物学 微生物学
- 寄生虫学的寄生虫学
- 马的健康 马的健康
背景情况:
- 胃肠道线虫感染对马的健康和福利构成重大威胁.
- 增加抗虫药物耐药性需要开发替代控制策略.
- 寄生性线虫拥有独特的微生物群,这些微生物群可能会影响宿主-寄生虫相互作用和寄生虫生存能力.
研究的目的:
- 描述和比较马类胃肠道线虫及其宿主中的微生物组.
- 调查微生物组组成,多样性和核心结构在各种肠道位置,线虫子家族和性别之间的差异.
- 通过分析线虫相关微生物群来确定新型寄生虫控制方法的潜在目标.
主要方法:
- 在屠宰场从马匹 (Equus caballus和Equus asinus) 收集便和线虫样本.
- 使用Illumina iSeq 100平台进行DNA提取和16S rRNA基因测序 (V3-V4区域).
- 生物信息分析 (QIIME2,微生物组分析) 和统计比较 (PERMANOVA,LEfSe,多样性指标).
主要成果:
- 尼马微生物群与便微生物群不同,主要由菌,蛋白质细菌,细菌虫,虫微生物群和虫细菌群主导.
- 线虫表现出较低的微生物丰富性 (α多样性),但具有明显的社区结构 (β多样性,p=0.007).
- 微生物组成因肠部位,线虫子家族和性别而异,蛋白质细菌富含线虫,特别是在阴中. 识别了像Fusobacterium,Mesorhizobium和Mycoplasma这样的独家种类.
结论:
- 马类胃肠道线虫有独立的,与宿主分开的结构化微生物组.
- 这些发现凸显了线虫的生态专业化.
- 针对寄生虫相关的微生物群为新的马匹寄生虫控制策略提供了一个有希望的途径.
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