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Related Concept Videos

Methods to Assess Microbial Communities01:19

Methods to Assess Microbial Communities

Microbial communities, comprising bacteria, archaea, and eukaryotic microorganisms, inhabit diverse ecosystems and play crucial roles in environmental and biological processes. Their diversity is defined by three main parameters: species richness (the number of distinct species), species abundance (the relative quantity of each species), and species evenness (how uniformly individual species are distributed in various locations). These factors together shape the structure and ecological balance...

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Related Experiment Video

Updated: May 7, 2026

Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere
09:55

Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere

Published on: May 2, 2018

Sample processing and cDNA preparation for microbial metatranscriptomics in complex soil communities.

Lilia C Carvalhais1, Peer M Schenk

  • 1School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland, Australia.

Methods in Enzymology
|September 25, 2013
PubMed
Summary
This summary is machine-generated.

Profiling soil microbial functions using mRNA-based metatranscriptomics is challenging. This study addresses key issues in soil sample processing and cDNA preparation for accurate bacterial and archaeal community analysis.

Keywords:
MetatranscriptomicsRNA-seqSample processingSoilcDNA synthesis

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Isolation and Analysis of Microbial Communities in Soil, Rhizosphere, and Roots in Perennial Grass Experiments

Published on: July 24, 2018

Area of Science:

  • Microbiology
  • Environmental Science
  • Genomics

Background:

  • Soil hosts diverse microbial communities crucial for ecosystem functions like nutrient cycling.
  • DNA-based metagenomics reveals high microbial diversity but offers limited insight into active functions.
  • mRNA-based metatranscriptomics is a powerful but technically demanding approach to study microbial activity.

Purpose of the Study:

  • To identify and address challenges in soil sample processing for microbial metatranscriptomics.
  • To optimize complementary DNA (cDNA) preparation for accurate analysis of bacterial and archaeal mRNA.
  • To provide a methodological framework for robust soil metatranscriptomic studies.

Main Methods:

  • Detailed protocols for soil sample collection and preservation to maintain RNA integrity.
  • Optimization of RNA extraction and purification techniques suitable for complex soil matrices.
  • Development of efficient complementary DNA (cDNA) synthesis methods from bacterial and archaeal RNA.

Main Results:

  • Identified critical factors influencing RNA yield and quality during soil sample handling.
  • Established optimized procedures for RNA isolation and cDNA synthesis, minimizing biases.
  • Demonstrated the applicability of the developed methods for profiling active microbial communities in soil.

Conclusions:

  • Effective soil sample processing and cDNA preparation are essential for successful metatranscriptomics.
  • The presented methods enhance the reliability and accuracy of studying soil microbial functions.
  • This work facilitates deeper understanding of microbial roles in soil ecosystems through functional gene expression analysis.