Effects of Pb and Zn Toxicity on Chlorophyll Fluorescence and Biomass Production of Koelreuteria Paniculata and Zelkova Schneideriana Young Plants
Files
View the Research
Academic Unit
College of Arts and Sciences
Publication Date
2-2019
Document Type
Article
Abstract
The influence of Pb and Zn on chlorophyll (Chl) fluorescence and plant growth of one-year-old Koelreuteria paniculata and Zelkova schneideriana young plants was investigated. Pb and Zn contents in plant organs were measured. The results showed Pb and Zn stress decreased photochemical quenching and quantum efficiency of PSII, but increased energy dissipation in the tested plants. At the same time, maximum net photosynthetic rate, maximum quantum use efficiency, and organ biomass were reduced. Under the same concentration of heavy metals, the damage induced by Zn toxicity was more serious than that of Pb. Pb was less accumulated in leaves, with a mild effect on photosynthesis. Zn was mostly accumulated in leaves and strongly disturbed chloroplast functioning and affected photosynthesis. Pb and Zn had different pathway to influence biomass production, and both tested plants might use different mechanisms of action for heavy metal stress resistance.
Journal Title
Photosynthetica
Volume
57
Issue
2
Beginning Page Number
688
Last Page Number
697
DOI
10.32615/ps.2019.050
Recommended Citation
Huang, Xinhao; Fan, Fnu; Chen, Xiaoyong; Yan, W.D.; Wang, R.J.; and Wang, G.J., "Effects of Pb and Zn Toxicity on Chlorophyll Fluorescence and Biomass Production of Koelreuteria Paniculata and Zelkova Schneideriana Young Plants" (2019). Faculty Authors and Creators Reception. 236.
https://opus.govst.edu/fac/236