title: The Chlorophyll a Fluorescence Modulated by All-Trans-β-Carotene in the Process of Photosystem II.
abstract: Modulating the chlorophyll a (Chl-a) fluorescence by all-trans-β-Carotene (β-Car) in the polarity and non-polarity solutions was investigated. The fluorescence intensity of Chl-a decreased as the concentration of β-Car increased. The excited electronic levels of Chl-a and β-Car became much closer owing to the solvent effect, which led to the electron transfer between both two molecules. A electron-separated pair Chl(-)·Chl⁺ that is not luminous was formed due to electron transfer. The solution of Chl-a and β-car in C₃H₆O was similar to the internal environment of chloroplast. We conclude that the polar solvent is good for the fluorescent modulation in photosystem II.
authors.affiliation: Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China. tianyu14@mails.jlu.edu.cn.
authors.forename: Tianyu
authors.initials: T
authors.lastname: Li
authors.affiliation: College of Plant Science, Jilin University, Changchun 130062, China. 13258880526@163.com.
authors.forename: Ye
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China. gongnan15@mails.jlu.edu.cn.
authors.forename: Nan
authors.initials: N
authors.lastname: Gong
authors.affiliation: Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China. zuowei_li@163.com.
authors.forename: Zuowei
authors.initials: Z
authors.lastname: Li
authors.affiliation: Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China. chenglin@jlu.edu.cn.
authors.forename: Chenglin
authors.initials: C
authors.lastname: Sun
authors.affiliation: Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China. zwmen@jlu.edu.cn.
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Men
mesh_terms: D002734:Chlorophyll / Q000737:chemistry / Q000378:metabolism*; D000077194:Chlorophyll A; D005453:Fluorescence; D045332:Photosystem II Protein Complex / Q000737:chemistry / Q000378:metabolism*; D012997:Solvents; D019207:beta Carotene / Q000737:chemistry / Q000378:metabolism*
chemical_list: D045332:Photosystem II Protein Complex; D012997:Solvents; D019207:beta Carotene; D002734:Chlorophyll; D000077194:Chlorophyll A
keywords: all-trans-β-carotene; chlorophyll a; electron transfer; fluorescence