利用微流控条带板技术研究中国乳白蚁的肠道微生物组。
Harnessing microfluidic streak plate technique to investigate the gut microbiome of Reticulitermes chinensis.
机构信息
State Key Laboratory of Microbial Resources and Environmental Microbiology Research Center at, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.
University of Chinese Academy of Sciences, Beijing, China.
出版信息
Microbiologyopen. 2019 Mar;8(3):e00654. doi: 10.1002/mbo3.654. Epub 2018 Jun 13.
The termite gut microbiome is a model system to investigate microbial interactions and their associations with host. For decades, extensive research with molecular tools and conventional cultivation method has been carried out to define the microbial diversity in termite gut. Yet, many bacterial groups of the termite gut microbiome have not been successfully cultivated in laboratory. In this study, we adapted the recently developed microfluidic streak plate (MSP) technique for cultivation of termite gut microbial communities at both aerobic and anaerobic conditions. We found that 99 operational taxonomic units (OTUs) were cultivable by MSP approach and 18 OTUs were documented first time for termite gut microbiota. Further analysis of the bacterial diversities derived by culture-dependent MSP approach and culture-independent 16S rRNA gene typing revealed that both methods have bias in recovery of gut microbiota. In total 396 strains were isolated with MSP technique, and potential new taxa at species and/or genus levels were obtained that were phylogenetically related to Burkholderia, Micrococcus, and Dysgonomonas. Results from this study indicate that MSP technique is applicable for cultivating previously unknown and new microbial groups of termite gut microbiota.
白蚁肠道微生物组是一个研究微生物相互作用及其与宿主关联的模型系统。几十年来,人们已经使用分子工具和传统培养方法进行了广泛的研究,以确定白蚁肠道中的微生物多样性。然而,白蚁肠道微生物组中的许多细菌群都不能在实验室中成功培养。在这项研究中,我们采用了最近开发的微流控划线平板(MSP)技术,在有氧和无氧条件下培养白蚁肠道微生物群落。我们发现,MSP 方法可培养 99 个操作分类单元(OTU),并且首次记录了 18 个 OTU 是白蚁肠道微生物群的组成部分。通过培养依赖的 MSP 方法和非培养 16S rRNA 基因分型得出的细菌多样性的进一步分析表明,这两种方法在恢复肠道微生物群方面都存在偏差。总共用 MSP 技术分离了 396 株菌株,获得了与伯克霍尔德菌、微球菌和异常球菌属具有系统发育关系的潜在新种和/或新属的潜在新分类群。这项研究的结果表明,MSP 技术适用于培养以前未知的和新的白蚁肠道微生物群的微生物群体。