Developing affordable and efficient heating devices for enhanced live cell imaging in confocal microscopy.

Area of Science:

• Plant Biology
• Microscopy
• Thermal Biology

Background:

• Accurate temperature control is essential for live cell imaging, especially when studying plant responses to thermal stress.
• Existing solutions for temperature control in microscopy can be expensive and may not meet the specific needs of plant research.

Purpose of the Study:

• To design, develop, and test two cost-effective heating devices for confocal microscopy applications.
• To provide accessible tools for studying plant thermal biology, including responses to moderate and severe heat stress.

Main Methods:

• Engineered an aluminum heat plate to fit standard microscope stages, supporting temperatures up to 36°C.
• Developed a wireless mini-heater for rapid, precise sample slide heating up to 50°C.
• Tested devices in controlled studies, including real-time analysis of heat shock protein accumulation and stress granule formation in *Arabidopsis thaliana*.

Main Results:

• The aluminum heat plate effectively maintained temperatures for moderate heat stress studies (30-36°C).
• The wireless mini-heater demonstrated rapid heating and maintained high temperatures (up to 50°C) for severe heat stress investigations.
• Both devices proved effective in live imaging experiments and had a combined construction cost under $300.

Conclusions:

• The developed heating devices are effective, affordable, and accessible solutions for live plant cell imaging under thermal stress.
• These budget-friendly tools can significantly benefit smaller laboratories with limited funding for specialized equipment.
• Future improvements could enhance heat uniformity, humidity control, and thermal stability for extended imaging sessions.