TbasCO:基于特征的比较'omics识别了工程微生物群的生态系统级和利基区分的适应性
E A McDaniel1,2, J J M van Steenbrugge3,4,5, D R Noguera6
1Department of Bacteriology, University of Wisconsin-Madison, Madison, WI, USA. elizabethmcd93@gmail.com.
ISME communications
|November 8, 2023
概括
解开微生物社区特征是一个挑战. 这项研究引入了一种新的框架,使用基因组解析的元转录组学来将转录模式与特定的微生物特征联系起来,揭示了利基区分表达属性.
科学领域:
- 微生物生态学 微生物生态学
- 系统生物学 系统生物学
- 基因组学就是基因组学.
背景情况:
- 从标记基因推断微生物种群特征缺乏忠实性,错过了像基因表达时间这样的动态属性.
- 现有的方法很难在复杂的微生物群落中捕捉协调的特征表达.
研究的目的:
- 通过将特征属性定义为共享的转录模式,开发一种用于评估微生物群落特征景观的新框架.
- 通过基因组解析的时间序列元转录组学,将特定的功能特征与微生物种群联系起来.
主要方法:
- 使用KEGG路径数据库作为特征库.
- 将基因组解析的时间序列元转录组学应用于一个微生物生态系统模型 (增强生物去除).
- 基于多个生物体共享的转录模式的统计定义的特征属性.
主要成果:
- 大多数 (65%) 存在于10个或更多基因组的特征表现出利基区分表达属性.
- 确定了高亲和载体 (pstABCS) 的新型转录模式,包括在高条件下的上调调节,这与公认的理解相反.
- 证明了将特征属性赋予未培养的微生物的能力.
结论:
- 开发的框架为揭示微生物群落的功能动态提供了一个强有力的方法.
- 基因组解析的元转录组学使我们能够更深入地了解特征表达和复杂微生物生态系统中的生态作用.
- 这种方法通过将基因表达与高分辨率的特定特征联系起来,促进了微生物生态学的研究.
相关概念视频
01:16Transduction
21
Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...
21
01:29Modern Molecular Taxonomy
23
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
23
01:20Applications of Molecular Taxonomy
24
Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
24
02:02Ecological Niches
23.7K
All organisms have a position within an ecosystem. The complete set of living and nonliving factors—including food resources, climate, and terrain—that define the position of a given organism are collectively referred to as the organism’s ecological niche.
23.7K
01:29Microbial Morphologies
23
Bacterial and archaeal cells exhibit remarkable diversity in shape and structure, critical in their adaptability and functionality. Among bacteria, the most commonly observed shapes include cocci and bacilli. Cocci are spherical and may exist singly or in groupings such as pairs (diplococci), chains (streptococci), clusters (staphylococci), or tetrads. Bacilli, in contrast, are rod-shaped and can also occur as single cells, in pairs, or chains, depending on their environmental and genetic...
23
01:24Diversity of Archaea II
19
Archaea, one of the three domains of life, exhibit remarkable diversity and adaptability, thriving in both extreme and moderate environments. Historically, most identified archaea have been classified into two major phyla: Euryarchaeota and Crenarchaeota. However, recent molecular studies have expanded this classification to include three additional phyla: Thaumarchaeota, Nanoarchaeota, and Korarchaeota, each exhibiting unique characteristics and ecological roles.Thaumarchaeota: Mesophiles...
19