甲基性伴侣影响细胞聚合和Syntrophobacterium fumaroxidans的信号传递
Anna Doloman1, Maaike S Besteman2, Mark G Sanders3
1Laboratory of Microbiology, Wageningen University & Research, Stippeneng 4, 6708, WE, Wageningen, The Netherlands. anna.doloman@wur.nl.
Applied microbiology and biotechnology
|January 17, 2024
概括
微生物共同培养在五个月内形成了毫米大小的聚合物,由定数感应分子和对细胞粘附和多糖制造的上调基因驱动.
科学领域:
- 微生物学 微生物学
- 生物化学 生物化学
- 环境科学 环境科学
背景情况:
- 微生物聚合物形成,称为颗粒化,在无氧消化过程中很常见,但人们对其了解甚少.
- 在微生物群落中,合成相互作用至关重要,但驱动聚合物形成的机制尚不清楚.
研究的目的:
- 为了研究在同位素共同培养中聚合物形成过程中的形态和生化变化.
- 在Syntrophobacterium fumaroxidans和甲基生物的模型系统中确定细胞聚合的基础分子机制.
主要方法:
- 在一年的食批量模式下培育同位菌共同种植 (S. fumaroxidans与M. hungatei或M. formicicum).
- 在共同培养的超水生物中检测N-acyl homoserine乳 (定数感应分子).
- 比较转录组学用于分析聚合物形成期间的基因表达变化.
主要成果:
- 在两种共同培养中,毫米尺度的聚合物在五个月内形成.
- 在宏积聚物形成 (>20微米) 之前检测到N-类同类素乳.
- 在聚合培养中观察到参与信号传导,多糖分泌和金属运输的基因的升级.
结论:
- 这项研究提供了详细的生化和生理洞察力,了解合成甲基共同培养中的聚合物形成.
- 定数感应和特定的基因表达模式是微生物聚合物发展的关键因素.
- 这些发现有助于进一步了解无氧消化过程中的微生物社区结构和功能.
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