蛋白质体对海洋蓝细胞代谢的影响
Cristina Howard-Varona1, Simon Roux1,2, Benjamin P Bowen3
1Department of Microbiology, The Ohio State University, Columbus, OH, USA.
ISME communications
|November 8, 2023
概括
感染蓝藻细菌 (蓝藻细胞) 的海洋病毒显示出高代谢活性和资源需求,当它们被原生动物捕食时. 这种相互作用显著影响海洋食物网中的营养循环.
科学领域:
- 海洋微生物生态学
- 海洋生物地质化学循环.
- 病毒-原原体-核细胞相互作用
背景情况:
- 海洋的碳和营养循环依赖于浮游生物食物网中的复杂相互作用.
- 之前的研究经常孤立地检查病毒感染或原生虫捕食.
- 对病毒, prokaryotes 和 protists 的综合作用的受控研究很少.
研究的目的:
- 为了研究Synechococcus蓝球菌病毒细胞对原生虫Oxyrrhis marina的种群级反应.
- 阐明病毒感染和原生虫捕食对微生物新陈代谢的相互作用.
- 了解这些相互作用如何影响生物地化学过程.
主要方法:
- 转录学用于分析基因表达.
- 内体和外体代谢学研究细胞内和释放的代谢物.
- 光合作用效率测量. 光合作用效率测量.
- 显微镜用于直接观察.
主要成果:
- 抗原体的存在没有影响未感染的Synechococcus转录或细胞内代谢物.
- 单独的诺细胞显示病毒介导的代谢重编程,并释放出外代谢物.
- 与原生体共同培养导致一些外代谢物消失,这表明消费.
- 在原体细胞的存在下,蓝色细胞细胞内的细胞内反应被放大,特别是对于资源和能源生产途径.
- 当原生体存在时,蓝细胞的光合作用效率会增加.
结论:
- 当原生体存在时,cyanovirocell的代谢需求最高,这表明对营养循环有重大影响.
- 这些发现揭示了以前没有考虑的基细胞对原生体相互作用的反应.
- 这项研究强调了将病毒-原生体-原生体动态整合到微生物生理学和全球生物地化学过程模型中的重要性.
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