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Related Experiment Video

Updated: Jul 2, 2026

In Situ Isolation and Culturing of Recalcitrant Soil Bacteria using an Isolation Chip (iChip)

In Situ Isolation and Culturing of Recalcitrant Soil Bacteria using an Isolation Chip (iChip)

Published on: August 6, 2025

Cultivating previously uncultured soil bacteria using a soil substrate membrane system.

Belinda C Ferrari¹, Tristrom Winsley, Michael Gillings

¹School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales 2052, Australia. b.ferrari@unsw.edu.au

Nature Protocols

|August 21, 2008

Summary

This study introduces a soil substrate membrane system for cultivating previously undescribed soil bacteria. The method efficiently grows diverse, unculturable bacteria as microcolonies, revealing novel microbial diversity.

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Last Updated: Jul 2, 2026

In Situ Isolation and Culturing of Recalcitrant Soil Bacteria using an Isolation Chip (iChip)

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Published on: August 6, 2025

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Isolation of Soil Microorganisms Using iChip Technology

Isolation of Soil Microorganisms Using iChip Technology

Published on: January 10, 2025

Area of Science:

Microbiology
Environmental Science
Molecular Biology

Background:

Many soil bacteria are difficult to culture using standard laboratory methods.
Culturing recalcitrant bacteria is crucial for understanding microbial ecosystems and discovering novel functions.

Purpose of the Study:

To develop an effective method for cultivating previously undescribed soil bacteria.
To characterize the diversity and characteristics of bacteria retrieved using the novel system.

Main Methods:

Utilized a soil substrate membrane system with polycarbonate membranes and soil extract.
Incubated for 7-10 days to grow microcolonies.
Employed total bacterial staining and fluorescence in situ hybridization (FISH) for visualization and molecular typing.

Main Results:

Successfully cultivated diverse soil bacteria as microcolonies.
Identified that most recovered bacteria were resistant to standard cultivation techniques.
The protocol requires less than 4 hours of bench time over a 10-day incubation period.

Conclusions:

The soil substrate membrane system is an effective method for culturing previously uncultured soil bacteria.
This approach expands the accessible soil bacterial population for research.
The protocol is time-efficient and yields diverse microbial communities.