Japanese scientists study photosynthesis and Chl f for future solar application

• A group of scientists from several Japanese research universities have found new information on where exactly the molecule of chlorophyl f is located and how it works. The research was conducted to better understand the photosynthesis process in order to be able to apply this knowledge practically, including solar industry.

Before the recent study, it was known that chlorophyl f is red-shifted, that is absorbing far-red radiation from the lowest end of the visible spectrum. For better understanding of the process, the researchers have examined the algae containing the molecule. 

The scientists have discovered chlorophyl f presence at the photosystem I periphery and absence from ETC. As well, it has been detected that changes of the photosystem’s structure caused by far-red radiation come amid chlorophyl f synthesis. This has led them to conclusion that structural changes in PSI are caused by chlorophyl f. 

Such findings have for the first time explained the way chlorophyl f functions. The research has shown that presence of the molecule is interrelated with light-induced expression of PSI genes. This proves that chlorophyl f harvests far-red light-waves and enhances transfer of the energy. It has been also discovered that sequences of amino acids in PSI have been changed in order to accept the molecule of chlorophyl f.

Insight into photosynthetic process can be applied in various fields, such as artificially simulating the process to capture sunlight and convert it into electrical power.

Approximately 50% of sunlight consists of invisible infrared waves. The recent research brings the world closer to utilization of the low light spectrum. The study shows how energy transfer can be efficiently improved, which can be harnessed for artificial simulation of the photosynthetic process.