焦测序
生物
末端限制性片段长度多态性
核糖体RNA
海洋真菌
生态学
限制性片段长度多态性
遗传学
聚合酶链反应
基因
作者
William D. Orsi,Jennifer F. Biddle,Virginia P. Edgcomb
出处
期刊:PLOS ONE
[Public Library of Science]
日期:2013-02-13
卷期号:8 (2): e56335-e56335
被引量:235
标识
DOI:10.1371/journal.pone.0056335
摘要
The deep marine subsurface is a vast habitat for microbial life where cells may live on geologic timescales. Because DNA in sediments may be preserved on long timescales, ribosomal RNA (rRNA) is suggested to be a proxy for the active fraction of a microbial community in the subsurface. During an investigation of eukaryotic 18S rRNA by amplicon pyrosequencing, unique profiles of Fungi were found across a range of marine subsurface provinces including ridge flanks, continental margins, and abyssal plains. Subseafloor fungal populations exhibit statistically significant correlations with total organic carbon (TOC), nitrate, sulfide, and dissolved inorganic carbon (DIC). These correlations are supported by terminal restriction length polymorphism (TRFLP) analyses of fungal rRNA. Geochemical correlations with fungal pyrosequencing and TRFLP data from this geographically broad sample set suggests environmental selection of active Fungi in the marine subsurface. Within the same dataset, ancient rRNA signatures were recovered from plants and diatoms in marine sediments ranging from 0.03 to 2.7 million years old, suggesting that rRNA from some eukaryotic taxa may be much more stable than previously considered in the marine subsurface.
科研通智能强力驱动
Strongly Powered by AbleSci AI