在北极海冰融化池中, prokaryotic 社区的盐度受控分布
Puthiya Veettil Vipindas1, Siddarthan Venkatachalam2, Thajudeen Jabir2
1Arctic Ecology and Biogeochemistry Division, National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Vasco-da-Gama, Goa, 403 804, India. bindas.vipi@gmail.com.
World journal of microbiology & biotechnology
|December 6, 2023
概括
北极融化池是独一无二的微生物生态系统的宿主. 盐度,叶绿素a和溶解的有机碳显著影响 prokaryotic 社区结构和分布在这些动态环境中.
科学领域:
- 微生物学 微生物学
- 海洋学 海洋学 海洋学
- 环境科学 环境科学
背景情况:
- 北极海冰融化的池对于理解冰白度反和能量平衡至关重要.
- 这些池代表着独特的微生物生态系统,这些生态系统是在融化季节早期形成的.
- 池盐度在塑造微生物群落中的作用仍未得到充分研究.
研究的目的:
- 调查池盐度对 prokaryotic 社区多样性和分布的影响.
- 确定控制北极融化池中的微生物群落的关键环境因素.
- 为了比较融化池的微生物群落与周围海洋的微生物群落.
主要方法:
- 利用了文化依赖和文化独立的 (16S rRNA基因片序列) 方法.
- 分析了 prokaryotic 社区组成,识别了细菌和古生物类和属.
- 测量环境变量包括盐度,叶绿素a和溶解有机碳.
主要成果:
- 确定了14个细菌和2个古生物学类,其中占主导地位的属包括Flavobacterium,Polaribacter和Nonlabens.
- 在纯培养中成功分离和鉴定了24个细菌属.
- 盐度,叶绿素a和溶解的有机碳被确定为 prokaryotic 社区分布的重要驱动因素.
- 观察到明显的社区转移与盐度和池深度的变化相关.
- 融化池的 prokaryotic 社区与表面的海洋微生物社区有很大的不同.
结论:
- 盐度是构建北极融化池中的 prokaryotic 社区的一个关键因素.
- 复杂的 prokaryotic 社区在融化池中迅速发展,利用当地生产的溶解有机碳.
- 融化池生态系统与更广泛的海洋环境有所区别,凸显了它们独特的生态作用.
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