title: Effect of artificial acid rain and SO2 on characteristics of delayed light emission.
abstract: The structure and function of chloroplast in plant leaves can be affected by acid rain and air pollution. The photosystem II in a plant is considered the primary site where light-induced delayed light emission (DLE) is produced. With the lamina of zijinghua (Bauhinia variegata L.) and soybean (Glycine max (L.) Merr.) as testing models, we studied the effects of artificial acid rain and SO2 on characteristics of DLE by using a home-made weak luminescence detection system. The results show that the changes in DLE intensity of green plants can reflect the changes in chloroplast intactness and function. With proper calibration, DLE may provide an alternative means of evaluating environmental acid stress on plants. The changes in DLE intensity may provide a new approach for the detection of environmental pollution and its impact on the ecosystem.
authors.affiliation: Institute of Laser Life Science, South China Normal University, Guangzhou 510631, People's Republic of China.
authors.forename: Chenglong
authors.initials: C
authors.lastname: Wang
authors.forename: Da
authors.initials: D
authors.lastname: Xing
authors.forename: Lizhang
authors.initials: L
authors.lastname: Zeng
authors.forename: Chunfeng
authors.initials: C
authors.lastname: Ding
authors.forename: Qun
authors.initials: Q
authors.lastname: Chen
mesh_terms: D015258:Acid Rain; D036481:Bauhinia / Q000187:drug effects; D002736:Chloroplasts / Q000187:drug effects*; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D008163:Luminescent Measurements; D018515:Plant Leaves / Q000187:drug effects; D013458:Sulfur Dioxide / Q000737:chemistry / Q000494:pharmacology*; D013997:Time Factors
chemical_list: D015258:Acid Rain; D013458:Sulfur Dioxide; D006861:Hydrogen Peroxide