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首页> 外文期刊>Microbes and Environments >Cultivation of Uncultured Chloroflexi Subphyla: Significance and Ecophysiology of Formerly Uncultured Chloroflexi 'Subphylum I' with Natural and Biotechnological Relevance
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Cultivation of Uncultured Chloroflexi Subphyla: Significance and Ecophysiology of Formerly Uncultured Chloroflexi 'Subphylum I' with Natural and Biotechnological Relevance

机译：未培养的绿屈挠菌亚种的培养：具有自然和生物技术相关性的未培养的绿屈挠菌亚种的意义和生态生理

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摘要

Cultivation-independent molecular surveys have shown members of the bacterial phylum Chloroflexi to be ubiquitous in various natural and artificial ecosystems. Among the subphylum-level taxa of the Chloroflexi known to date, the formerly uncultured 'subphylum I' had well been recognized as a typical group that contains a number of environmental gene clones with no culture representatives. In order to reveal their ecophysiology, attempts were made over the past decade to domesticate them into laboratory cultures, and significant advances have been made in cultivating strains belonging to the group. The microorganisms characterized so far include seven species in six genera, i.e., Anaerolinea, Levilinea, Leptolinea, Bellilinea, Longilinea, and Caldilinea, and were proposed to represent two classes, Anaerolineae and Caldilineae, providing solid insights into the phenotypic and genetic properties common to the group. Another subphylum-level uncultured group of the Chloroflexi, i.e., the class Ktedonobacteria, has also been represented recently by a cultured strain. In addition to the results from these tangible cultures, data obtained from functional analyses of uncultured Chloroflexi populations by assessing substrate uptake patterns are accumulating at an encouraging rate. In this review, recent findings on the ecological significance and possible ecophysiological roles of 'Chloroflexi subphylum I' are discussed based on findings from both the characteristics of the cultured Chloroflexi and molecular-based analyses.
机译：独立于耕种的分子调查显示，细菌叶绿单胞菌的成员在各种自然和人工生态系统中无处不在。在迄今已知的叶绿藻的亚属水平分类群中，以前未经培养的“亚属I”已被公认为是典型的群体，其中包含许多无文化代表的环境基因克隆。为了揭示它们的生态生理，在过去的十年中，人们尝试将它们驯化成实验室培养物，并且在培养属于该组的菌株方面取得了重大进展。迄今表征的微生物包括六个属中的七个物种，即厌氧厌氧菌，Levilinea，Leptolinea，Bellilinea，Longilinea和Caldilinea，并被提议代表厌氧厌氧菌和Caldilineae两类，提供了对常见的表型和遗传特性的深刻见解。群组。绿藻的另一个亚属水平的未培养群体，即Ktedonobacteria类，最近也以培养菌株为代表。除了这些有形培养的结果外，通过评估底物摄取模式从未培养的屈挠弯曲种群的功能分析获得的数据正在以令人鼓舞的速度积累。在这篇综述中，基于培养的叶绿屈挠的特征和基于分子的分析结果，讨论了有关“叶绿屈挠I”的生态意义和可能的生理生理作用的最新发现。

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