在西北大西洋的微核细胞代谢通过自主水下造型而揭示
Natalie R Cohen1,2, Arianna I Krinos3,4, Riss M Kell3,5
1University of Georgia Skidaway Institute of Oceanography, Savannah, GA, 31411, USA. cohen@uga.edu.
Nature communications
|August 25, 2024
概括
海洋微核细胞在碳循环中发挥着至关重要的作用. 这项研究揭示了他们多样化的社区结构和在北大西洋深度梯度的代谢适应,使用多omics.
科学领域:
- 海洋微生物学 海洋微生物学
- 海洋学 海洋学 海洋学
- 生物地质化学生物地质化学
背景情况:
- 微核细胞对海洋碳循环至关重要,但它们的深海生态仍然不太了解.
- 离岸和深海生态系统为研究微生物生活带来了独特的挑战.
- 了解微核细胞的功能多样性是理解海洋生态系统动态的关键.
研究的目的:
- 在西北大西洋的环境梯度中调查微核细胞的多样性和代谢特征.
- 描述微核细胞社区结构和从表面到深海水中的功能过程.
- 确定环境因素如何影响微核细胞分布和应激反应.
主要方法:
- 利用自主水下车辆Clio进行了长达1050公里的横断测量.
- 采用了一种配对的metatranscriptomic和metaproteomic方法来分析微生物群落.
- 检查的样品在垂直深度增加从10到200米,和更深.
主要成果:
- 一个多样化的表面微核细胞组合包括斯特拉门诺皮尔,恐龙鞭状体和状体.
- 来自foraminifera,radiolaria,picozoa和discoba的蛋白质在200米以下得到丰富.
- 在深度超过3000米的水域中检测到真菌蛋白.
- 压力生物标志物在沿海地区普遍存在,而压力生物标志物在海上被发现.
结论:
- 微核细胞群体在海洋梯度上表现出不同的分类学和功能结构.
- 代谢特征揭示了适应不同营养的可用性 (与压力).
- 这种多omics数据集增强了对不同环境条件下的海洋碳循环中的微核细胞角色的理解.
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