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环境异质性塑造了海马寒流中的C和S循环相关的微生物群体
Yu Chen1,2, Tianjiao Dai3, Niu Li2
1Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China.
Frontiers in microbiology
|July 28, 2023
概括
寒流中的环境异质性塑造了微生物群落. 与动植物相关的地化学变化影响甲流和微生物结构,影响碳和硫循环.
科学领域:
- 海洋生物学 海洋生物学
- 微生物生态学 微生物生态学
- 地质化学 地质化学
背景情况:
- 寒冷的透表现出环境异质性,影响动物聚合物和沉积物微生物群.
- 与地球化学循环相关的微生物群落对于冷生态系统至关重要,但它们的结构仍未得到充分研究.
- 之前的研究还没有完全探索环境异质性,动物聚合物和微生物社区在冷中的功能之间的关系.
研究的目的:
- 调查海马寒流中不同动物聚集体内的与地球化学循环相关的微生物群落的结构和功能.
- 了解由地化学变量和动物存在驱动的环境异质性如何塑造微生物社区的组成和相互作用.
- 阐明微生物代谢在推动环境变化和影响社区动态方面的作用.
主要方法:
- 来自四种不同的动物聚合物的沉积物样本的地化学分析.
- 对微生物社区结构和功能进行表征的meta-omics分析.
- 分子生态网络分析以推断物种间相互作用和社区聚集模式.
主要成果:
- 在不同的动物聚合物中观察到地化学变量 (硫酸盐,,) 的显著变化,表明甲流量发生了变化.
- 厌氧甲性古生物 (ANME),硫酸盐减少细菌 (SRB) 和硫化物氧化细菌 (SOB) 主导,但显示了聚合物特定的组成差异.
- 微生物多样性与硫酸盐,和酸盐水平相关,而跨物种共同排斥增加到贝聚合物.
- 网络物种显示了聚合物特定的分布,微生物代谢 (碳化合物氧化,硫酸盐减少) 导致沉积物化.
结论:
- 地质流体的组成和微生物代谢相互作用,在冷中产生环境异质性.
- 这种异质性显著塑造了碳和硫循环相关的微生物群落的组成和功能.
- 动物聚合物作为独特的微环境,影响微生物社区结构和地化学循环.
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