与粒子相关的细菌对海洋藻Minutocellus polymorphus的聚合有不同的影响
Bianca N Cruz1,2, Susanne Neuer3,4
1School of Life Sciences, Arizona State University, Tempe, AZ, USA.
ISME communications
|November 8, 2023
概括
纳米尺寸的藻可以形成沉积聚合物并产生透明的外聚合物颗粒 (TEP). 细菌相互作用可以影响这种聚合,影响海洋雪形成和海洋的碳出口.
科学领域:
- 海洋生物学 海洋生物学
- 生物地质化学生物地质化学
- 微生物生态学 微生物生态学
背景情况:
- 植物浮游生物聚合形成海洋雪,对碳循环至关重要.
- 大型藻 (>20微米) 通过聚合和TEP生产,有助于沉降流.
- 纳米大小的藻 (2-20微米) 在聚合和TEP生产中的作用尚不清楚.
研究的目的:
- 为了研究纳米二原子Minutocellus polymorphus的聚合和TEP的产生.
- 为了确定细菌相互作用是否影响纳米二原子聚合.
- 评估纳米尺寸藻对海洋雪和碳出口的贡献.
主要方法:
- 培养的轴性微细胞多态.
- 与特定的细菌种群 (Marinobacter adhaerens,Pseudoalteromonas carrageenovora,Vibrio thalassae) 共同培养M.多态菌.
- 在单一种植和共同种植中比较聚合和TEP生产.
主要成果:
- 微细胞多态 (Minutocellus polymorphus) 形成沉积聚合物并产生TEP.
- 细菌物种对M. polymorphus的聚合有着不同的影响.
- 马里诺巴克特附着菌增强了聚合,而Pseudoalteromonas carrageenovora和Vibrio thalassae没有.
- TEP 生产也受到细菌存在的影响.
结论:
- 纳米尺寸的藻可以通过聚合和TEP生产来促进海洋雪的形成.
- 特定的细菌-浮游生物相互作用是纳米二原子出口的关键机制.
- 这一过程在小型浮游生物主导的寡质海洋中尤为重要.
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