A Guide to Plant Intracellular Temperature Imaging using Fluorescent Thermometers

Area of Science:

• Plant Physiology
• Biophysics
• Cell Biology

Background:

• Temperature is a critical environmental factor influencing all aspects of plant physiology, affecting cellular processes like gene expression, protein stability, and enzyme activity.
• Cellular metabolic reactions can generate or consume heat, leading to localized temperature changes within plant tissues and cells.
• Recent advancements in fluorescent probes have enabled intracellular temperature imaging in mammalian cells, revealing temperature gradients and heat generation mechanisms.

Approach:

• This review summarizes the development of fluorescent thermometers and their biological applications.
• It discusses the selection criteria for fluorescent thermometers suitable for plant cells.
• The review also outlines experimental setups for adapting intracellular temperature imaging to plant systems.

Key Points:

• Intracellular temperature imaging can detect temperature differences greater than 1°C within cells.
• This technique has been instrumental in understanding thermogenesis in brown adipocytes.
• No studies have yet reported on intracellular temperature imaging in plant cells.

Conclusions:

• Intracellular temperature imaging presents a promising new avenue for investigating the mechanisms of plant cell functions.
• Adapting this technology to plant cells could reveal novel insights into temperature-dependent physiological processes.
• Future research focusing on fluorescent thermometer selection and experimental design is crucial for successful application in plant science.