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Updated: Jan 21, 2026

DNA Stable-Isotope Probing DNA-SIP
Published on: August 2, 2010
Targeted Metatranscriptomics of Soil Microbial Communities with Stable Isotope Probing
Ang Hu1, Yahai Lu2, Marcela Hernández García3,4
1College of Resources and Environment, Hunan Agricultural University, Changsha, China. anghu@hunau.edu.cn.
This study combines RNA stable isotope probing (SIP) with metatranscriptomics to identify active microbial populations and their gene expression. The protocol targets methanotrophs in rice field soil for enhanced microbial community analysis.
Area of Science:
- Microbial Ecology
- Environmental Genomics
- Molecular Biology
Background:
- Metatranscriptomics reveals microbial community gene expression.
- Stable isotope probing (SIP) targets specific microbial groups.
- Combining RNA-SIP with metatranscriptomics improves mRNA detection from target microbes.
Purpose of the Study:
- To provide a protocol for RNA-SIP, mRNA enrichment, and preparation for high-throughput sequencing.
- To demonstrate the application of this combined method for targeting specific microorganisms in environmental samples.
Main Methods:
- RNA-stable isotope probing (SIP) to label active microorganisms.
- Metatranscriptomic analysis to capture community-wide gene expression.
- mRNA enrichment and preparation for high-throughput sequencing.
- Application to target methanotrophs in rice field soil.
Main Results:
- Enhanced detection and identification of mRNA from target microorganisms.
- Successful application of the protocol in a complex environmental matrix (rice field soil).
- Provides a framework for studying active microbial functions in situ.
Conclusions:
- The combined RNA-SIP and metatranscriptomic approach is effective for functional microbial community analysis.
- This protocol enables detailed investigation of specific microbial groups and their activities.
- Facilitates understanding of microbial responses to environmental conditions.
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