珊瑚内共生体的生长通过与细菌的代谢相互作用来增强
Jennifer L Matthews1, Abeeha Khalil2, Nachshon Siboni2
1Climate Change Cluster, University of Technology Sydney, Ultimo, NSW, 2007, Australia. Jennifer.Matthews@uts.edu.au.
Nature communications
|October 27, 2023
概括
特定的细菌通过提供必需的营养素和植物激素英多尔-3-酸 (IAA) 来显著影响微藻的新陈代谢和生长. 这些发现突出了决定Symbiodiniaceae健康的关键的王国间相互作用.
科学领域:
- 微生物学 微生物学
- 海洋生物学 海洋生物学
- 交生研究 交生研究
背景情况:
- 细菌在微藻资源获取,竞争能力和多样性方面发挥着至关重要的作用.
- 细菌和珊瑚微藻内共生体 (Symbiodiniaceae) 之间的代谢相互作用在很大程度上仍未被探索.
研究的目的:
- 研究细菌组成对Symbiodiniaceae细胞代谢的影响.
- 为了确定特定的细菌种群及其对Symbiodiniaceae适应性的代谢贡献.
主要方法:
- 改变与自由生活的Symbiodiniaceae物种相关的细菌群落.
- 分析细胞代谢,包括单糖和植物激素的丰富度.
- 使用单细胞稳定同位素追踪来追踪营养交换.
- 识别特定的细菌属,如拉布伦西亚 (Roseibium) 和马里诺巴克特.
主要成果:
- 细菌组成的变化导致了Symbiodiniaceae细胞代谢的显著转变.
- 单糖和英多尔-3-酸 (IAA) 的丰富度与特定的细菌存在相关.
- 细菌属Labrenzia和Marinobacter与Symbiodiniaceae进行了相互的碳和交换.
- 通过Labrenzia和Marinobacter提供IAA显著增强了Symbiodiniaceae的生长.
结论:
- 特定的细菌关联者从根本上影响了Symbiodiniaceae的健康状况.
- 跨王国的代谢交换,特别是IAA的供应,对于Symbiodiniaceae的健康至关重要.
- 这项研究揭示了细菌对微藻内生体生理学治理的新见解.
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