Reference: Li Q, et al. (2024) Delayed luminescence to monitor growth stages and assess the entropy of Saccharomyces cerevisiae. Heliyon 10(7): e27866.

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Abstract


Delayed luminescence (DL) refers to the photon-induced ultra-weak luminescence emitted by samples after the light source is switched off. As a noninvasive method for health monitoring and disease diagnosis, DL has attracted increasing attention. The further development of this technology is valuable for the study of complex biological processes, such as different growth stages. If such studies were to be conducted in humans, large numbers of subjects of all ages would need to be recruited, and individual differences would be inevitable. The budding yeast Saccharomyces cerevisiae (S. cerevisiae) has a short population lifespan, and the growth phases can be monitored within dozens of hours. Therefore, S. cerevisiae is an ideal model organism for research. In this study, we investigated the physiological characteristics and DL emission of S. cerevisiae during growth in glucose-based media and entry into stationary phase, and the results showed that DL kinetic curves of yeast cells in the growing phase were obviously separated from those of stationary phase cells. Moreover, the metabolic and physiological characteristics of the yeast cell population were discussed using the DL emission parameters I(0), tau and gamma. We also discussed the possibility of assessing entropy using DL emission parameters. Our research demonstrates the potential of this technology to be used in wider applications.

Reference Type
Journal Article
Authors
Li Q, Wu H, Tian M, Li D, Zheng P, Zhang X, Qing Tang B
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