Long-term imaging of three-dimensional hyphal development using the ePetri dish

Area of Science:

• Microbiology
• Microbial Imaging
• Biotechnology

Background:

• Long-term 3D imaging of microbial development is essential but limited by current technologies.
• Existing methods struggle with extended culturing and detailed visualization of microbial structures.

Purpose of the Study:

• To introduce an upgraded ePetri dish system for extended microbial culturing and 3D imaging.
• To overcome limitations of existing methods for observing microbial development over time.

Main Methods:

• Development of a sealed growth chamber for long-term microbial culturing.
• Implementation of a multi-step reconstruction algorithm including 3D deconvolution, image filtering, ridge, and skeleton detection.
• Validation of the system using Aspergillus brasiliensis hyphae over a seven-day period.

Main Results:

• Demonstrated stability of the growth medium within the sealed chamber over seven days.
• Successfully visualized fungal hyphae growth patterns in a 3D volume (5.5 mm × 4 mm × 0.5 mm).
• Identified filter failures undetectable by 2D imaging, highlighting system's enhanced sensitivity.

Conclusions:

• The upgraded ePetri dish system significantly advances long-term 3D microbial imaging capabilities.
• The system offers new insights into microbial development and behavior, applicable to diverse microbiological research.
• This technology promises to enhance the study of microbial communities and processes.