与Symbiodiniaceae在宿主的植物界相关的细菌
Lilian Jorge Hill1, Camila Simões Martins de Aguiar Messias1, Caren Leite Spindola Vilela1
1Laboratory of Molecular Microbial Ecology, Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro 21941-901, Brazil.
iScience
|April 8, 2024
概括
研究人员开发了一种新方法来隔离珊瑚共生体 (Symbiodiniaceae) 及其相关细菌. 这种技术有助于研究珊瑚中的关键但不太了解的共生关系.
科学领域:
- 海洋生物学 海洋生物学
- 微生物学 微生物学
- 同生相互作用的交互.
背景情况:
- 珊瑚藻 (Symbiodiniaceae) 和细菌之间的共生关系对珊瑚健康至关重要,但仍未得到充分研究,特别是在珊瑚宿主中.
- 了解这些相互作用对于评估珊瑚的弹性和珊瑚礁生态系统动态是至关重要的.
研究的目的:
- 开发和验证一种新的技术,以从珊瑚组织中分离完整的,代谢活跃的宿主Symbiodiniaceae细胞 (ihSC) 和它们相关的细菌.
- 描述与ihSC.相关的细菌群落.
- 研究ihSC与相关细菌之间的潜在分子交换机制.
主要方法:
- 调整了一种不连续的Percoll梯度 (SIP) 技术,以从模型珊瑚Pocillopora damicornis中丰富ihSC.
- 显微镜分析以确认 ihSC 在50% SIP 分数中的度.
- 光在位杂交 (FISH) 检测相关细菌.
- 微生物组测序以识别与ihSC.相关的细菌种群.
主要成果:
- 珀科尔梯度方法成功分离了完整和代谢活跃的ihSC.
- 鱼类证实了与ihSC.直接相关的细菌的存在.
- 微生物组分析显示,与Halieaceae,Flavobacteriaceae和Alcanivoraceae家族的细菌有显著的关联.
- 在共生体膜上观察到细胞外囊泡,这表明了潜在的分子通信.
结论:
- 开发的技术为研究珊瑚中与宿主相关的微生物群落提供了强大的工具.
- 特定的细菌家族与珊瑚宿主中的Symbiodiniaceae细胞密切相关.
- 这些发现为珊瑚细胞层面的复杂共生相互作用提供了新的见解.
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