Drought stress strengthens the link between chlorophyll fluorescence parameters and photosynthetic traits.

ABSTRACT: Chlorophyll fluorescence (ChlF) has been used to understand photosynthesis and its response to climate change, particularly with satellite-based data. However, it remains unclear how the ChlF ratio and photosynthesis are linked at the leaf level under drought stress. Here, we examined the link between ChlF ratio and photosynthesis at the leaf level by measuring photosynthetic traits, such as net CO₂ assimilation rate (A_n), the maximum carboxylation rate of Rubisco (V_cmax), the maximum rate of electron transport (J_max), stomatal conductance (g_s) and total chlorophyll content (Chl_t). The ChlF ratio of the leaf level such as maximum quantum efficiency of PSII (F_v/F_m) is based on fluorescence kinetics. ChlF

SUBMITTER: Zhuang J 

PROVIDER: S-EPMC7520092 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature