Chlorophyll a fluorescence kinetics of mung bean (Vigna radiata L.) grown under artificial continuous light

Deepak Kumar; Hanwant Singh; Shani Raj; Vineet Soni

doi:10.1016/j.bbrep.2020.100813

Chlorophyll a fluorescence kinetics of mung bean (Vigna radiata L.) grown under artificial continuous light

Biochem Biophys Rep. 2020 Sep 10:24:100813. doi: 10.1016/j.bbrep.2020.100813. eCollection 2020 Dec.

Authors

Deepak Kumar¹, Hanwant Singh¹, Shani Raj¹, Vineet Soni¹

Affiliation

¹ Plant Bioenergetics and Biotechnology Laboratory, Department of Botany, Mohanlal Sukhadia University, Udaipur, 313001, Rajasthan, India.

Abstract

Continuous light can be used as a tool to understand the diurnal rhythm of plants and it can also be used to increase the plant production. In the present research, we aimed to investigate the photosynthetic performance of V. radiata under continuous light as compared with the plants grown under normal light duration. Chlorophyll a fluorescence transient (OJIP test) technique was used to understand the effect on various stages of photosynthesis and their consequences under continuous light condition. Various Chl a Fluorescence kinetic parameters such as Specific energy fluxes (per Q_A-reducing PSII reaction center (RC)) (ABS /RC; TR₀/RC; ET₀/RC; DI₀/RC), phenomenological fluxes, leaf model, (ABS/CSm; TR/CSm; ETo/CSm), Quantum yields and efficiencies (φPo; φEo; Ψo) and Performance index (PI_abs) was extracted and analysed in our investigation. Conclusively, our study has revealed that continuous light alters the photosynthetic performance of V. radiata at a different point but also improve plant productivity.

Keywords: Chlorophyll fluorescence; Continuous light; OJIP test; Performance index; Specific energy fluxes; Vigna radiata.