水生宏基因组中几丁质酶基因的全球系统地理学分析。
Global phylogeography of chitinase genes in aquatic metagenomes.
机构信息
Department of Ecology & Genetics, Limnology, Uppsala University, Norbyvägen 18D, SE-75236 Uppsala, Sweden.
出版信息
Appl Environ Microbiol. 2011 Feb;77(3):1101-6. doi: 10.1128/AEM.01481-10. Epub 2010 Nov 29.
Abstract
Phylogeny-based analysis of chitinase and 16S rRNA genes from metagenomic data suggests that salinity is a major driver for the distribution of both chitinolytic and total bacterial communities in aquatic systems. Additionally, more acidic chitinase proteins were observed with increasing salinity. Congruent habitat separation was further observed for both genes according to latitude and proximity to the coastline. However, comparison of chitinase and 16S rRNA genes extracted from different geographic locations showed little congruence in distribution. There was no indication that dispersal limited the global distribution of either gene.
摘要
基于系统发生的分析，从宏基因组数据中的几丁质酶和 16S rRNA 基因表明，盐度是水生系统中几丁质酶和总细菌群落分布的主要驱动因素。此外，随着盐度的增加，观察到更多酸性的几丁质酶蛋白。根据纬度和靠近海岸线的位置，两个基因的生境分离也进一步一致。然而，对从不同地理位置提取的几丁质酶和 16S rRNA 基因进行比较，发现它们的分布几乎没有一致性。这表明扩散并没有限制这两个基因的全球分布。
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