Imaging plant cells by two-photon excitation

Area of Science:

• Cell Biology
• Microscopy
• Biophotonics

Background:

• Two-photon excitation (TPE) microscopy has transitioned from a niche technique to a widely adopted tool in advanced cell biology research.
• TPE microscopy offers significant advantages over traditional fluorescence imaging methods, including enhanced signal-to-noise ratios and improved penetration in thick tissues.
• The technology also shows considerable potential for vital imaging applications, allowing for real-time observation of biological processes.

Purpose of the Study:

• To review the current state and advantages of TPE microscopy in cell biology.
• To highlight the challenges and ongoing development of TPE microscopy protocols and applications.
• To explore the specific potential of TPE microscopy in plant sciences.

Main Methods:

• Literature review of published and unpublished results concerning TPE microscopy.
• Analysis of TPE microscopy's performance in comparison to other fluorescence imaging techniques.
• Evaluation of TPE microscopy's applicability to various biological samples, including plant tissues.

Main Results:

• TPE microscopy demonstrates clear benefits in signal quality and depth penetration compared to conventional fluorescence methods.
• While challenges in standardization and probe availability exist, TPE is adaptable to many existing protocols with added advantages.
• Plant cell imaging is a particularly promising area for TPE due to the optical properties of plant tissues.

Conclusions:

• TPE microscopy is a powerful and increasingly indispensable technique for advanced cell biology and vital imaging.
• Despite its cost, the unique capabilities of TPE justify its adoption for specific, demanding imaging objectives.
• Further development in protocols and probes will likely expand the utility and accessibility of TPE microscopy across scientific disciplines.