Modeling light response of effective quantum efficiency of photosystem II for C3 and C4 crops
Year: 2025
Type: article
Abstract: Effective quantum efficiency of photosystem II (Φ PSII ) represents the proportion of photons of incident light that are actually used for photochemical processes, which is a key determinant of crop photosynthetic efficiency and productivity. A robust model that can accurately reproduce the nonlinear light response of Φ PSII (Φ PSII – I ) over the I range from zero to high irradiance levels is lacking. In this study, we tested a Φ PSII – I model based on the fundamental properties of light absorption and transfer of energy to the reaction centers via photosynthetic pigment molecules. Using a modeling-observation intercomparison approach, the performance of our model versus three widely used empirical Φ PSII – I models were compared against observations for two C 3 crops (peanut and cotton) and two cultivars of a C 4 crop (sweet sorghum). The results highlighted the significance of our model in (1) its accurate and simultaneous reproduction of light response of both Φ PSII and the photosynthetic electron transport rate ( ETR ) over a wide I range from light limited to photoinhibition I levels and (2) accurately returning key parameters defining the light response curves.
Source: Frontiers in Plant Science
Institutions: Chinese Academy of Sciences, Nantong University, Research Center for Eco-Environmental Sciences, State Key Laboratory of Environmental Chemistry and Ecotoxicology, Jiangxi Agricultural University, Jinggangshan University, Guangdong Baiyun University, Guangdong ATV College of Performing Arts, Poznań University of Life Sciences, Macquarie University
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $3,801
OpenAlex ID: W4408207365