从全球变革的角度来看,解读微生物群落从热水风口沉积物中的演变
Carmen Rizzo1, Erika Arcadi2, Rosario Calogero3
1Marine Biotechnology Department, Stazione Zoologica Anton Dohrn-, Sicily Marine Centre, Villa Pace, Contrada Porticatello 29, 98167, Messina, Italy; Institute of Polar Sciences, National Research Council (CNR-ISP), Spianata S. Raineri 86, 98122, Messina, Italy.
Environmental research
|October 27, 2023
概括
水热喷口中的微生物群落适应环境变化. 来自不同风口起源的沉积物在生物多样性和功能方面表现出不同的反应,突出显示了初始条件对微生物进化的影响.
科学领域:
- 环境微生物学环境微生物学
- 极端爱好者的研究是极端爱好者的研究.
- 热水风口生态系统的生态系统
背景情况:
- 微生物群落对环境变化很敏感,特别是在极端息地,如热水喷口.
- 了解微生物适应对于预测生态系统对环境变化的反应至关重要.
研究的目的:
- 为了研究微生物社区的动态在变化的pH值和氧化还原潜力在热水风口沉积物.
- 为了确定不同风口起源的微生物群落在受控的微观宇宙实验中是否以不同的方式进化.
主要方法:
- 微观宇宙实验使用90天内在莱万特湾的三个浅水热喷口的沉积物.
- 分析微生物社区结构,生物多样性,酶特征和细胞丰度.
- 总和呼吸细胞比率的估计,以评估微生物活动.
主要成果:
- 观察到微生物群落结构的显著变化,特别是来自最酸性地点的沉积物,这些沉积物显示出高度多样性 (包括Thermotoga,Desulfobacterota,Planctomycetota,Synergistota,Deferribacterota).
- 在所有条件下检测到无氧代谢的微生物耐药形式的增加.
- 蛋白质分解活性被刺激,而性酸酶活性在低pH下降.
结论:
- 微生物群体根据它们的初始环境条件和起源表现出不同的反应.
- 热水风口微生物群落表现出适应性策略,包括耐药的无氧物种的繁殖.
- 酶活动与pH值有显著的变化,表明特定的生理适应.
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