Research of the relationship between delayed fluorescence and net photosynthesis rate in spinach under NaCl stress

Lingrui Zhang; Da Xing

doi:10.1117/12.710711

27 October 2006 Research of the relationship between delayed fluorescence and net photosynthesis rate in spinach under NaCl stress

Lingrui Zhang, Da Xing

Author Affiliations +

Proceedings Volume 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine; 60473F (2006) https://doi.org/10.1117/12.710711
Event: Fourth International Conference on Photonics and Imaging in Biology and Medicine, 2005, Tianjin, China

Abstract

Under NaCl stress conditions, the relationship between delayed fluorescence (DF) and net photosynthesis rate (Pn) in detached leaves of spinach (Spinacia oleracea L.) was surveyed. Results showed that the changes in DF intensity of the spinach leaves directly exposed to different NaCl concentrations demonstrated considerably high consistency with that in Pn. Incubation of the leaves in 200mmol/L NaCl induced a gradual increase and subsequent decline of the DF intensity and Pu, whereas incubation of the leaves in 300mmol/L NaCl induced a continuous decline of the DF intensity and Pn, suggesting that DF bad the same response to duration of treatment of different NaC1 concentrations with Pn. Both DF and Pn showed maximal Ca²⁺ antagonism effects on stress of high concentration NaC1 when the concentration of CaC1₂ reached l5mmolfL. All the results demonstrated that DF has an excellent correlation with Pn and can be used as a sensitive test for the state of photosynthetic apparatus under salt stress physiology.

Citation Download Citation

Lingrui Zhang and Da Xing "Research of the relationship between delayed fluorescence and net photosynthesis rate in spinach under NaCl stress", Proc. SPIE 6047, Fourth International Conference on Photonics and Imaging in Biology and Medicine, 60473F (27 October 2006); https://doi.org/10.1117/12.710711

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