Colorimetric quantification of cyanobacterial biofilm under different light environment
Production of extracellular polymeric substance (EPS) in Synechocystis sp. PCC 6803 showed strong dependencies on both irradiance and growth regime. Biofilm forming cells secreted more EPS per biomass compared to planktonic cells regardless of light intensities, consistently with its structural role...
Elmentve itt :
| Szerzők: | |
|---|---|
| Testületi szerző: | |
| Dokumentumtípus: | Könyv része |
| Megjelent: |
University of Szeged
Szeged
2025
|
| Sorozat: | Proceedings of the International Symposium on Analytical and Environmental Problems
31 |
| Kulcsszavak: | Mikrobiológia, Környezetbiotechnológia, Analitikai kémia |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/88720 |
| Tartalmi kivonat: | Production of extracellular polymeric substance (EPS) in Synechocystis sp. PCC 6803 showed strong dependencies on both irradiance and growth regime. Biofilm forming cells secreted more EPS per biomass compared to planktonic cells regardless of light intensities, consistently with its structural role in biofilm matrix formation. Light-intensity dependence of EPS levels showed elevated production under both low (10 mol photons m-2 s -1 ) and high light (> 200 mol photons m-2 s -1 ) intensities, suggesting its induction by both carbon overflow and photoprotective mechanisms. In addition, EPS secretion showed a remarkable wavelength dependence, peaking under blue-green (460-510 nm) light and strongly declining under yelloworange (560-590 nm) wavelengths. These findings highlight EPS secretion as a dynamic trait shaped by both light intensity and spectral composition, with the biofilm lifestyle further amplifying EPS yields. |
|---|---|
| Terjedelem/Fizikai jellemzők: | 336-340 |
| ISBN: | 978-963-688-078-1 |