Effect of Nd^(3+) on Photosynthesis of Spinach  

作　　者：刘超 洪法水 王玲 郑蕾 

机构地区：[1]College of Life Science [2]Library, Suzhou University, Suzhou 215006, China

出　　处：《Journal of Rare Earths》2004年第2期306-310,共5页稀土学报（英文版）

基　　金：ProjectsupportedbytheNationalNaturalScienceFoundationofChina ( 2 980 5 0 0 3 )andaPersonofAbilityRecommendedFoundationofSuzhouUniversity (XQ3 160 11)

摘　　要：The effect of Nd^(3+) on the photosynthesis and the growth of spinach was studied. The results show that Nd^(3+) improves the growth of spinach and increases chlorophyll content and photosynthetic rate. UV-Vis spectrum indicates that the Soret band of chl-a in spinach with NdCl_3 treatment is blue shifted by 2 nm, and the Q band is red shifted by 1 nm, and the ratio of Soret band intensity and Q band intensity increases. FT-IR spectra show that the peak of porphyrin ring in chl-a of spinach with NdCl_3 treatment is widened, suggesting that the formation of Nd^(3+)-chl-a. Treated by NdCl_3, the fluorescence emission peak of PSⅡ in spinach leaves is blue shifted by 12 nm and the intensity declines obviously, indicating that Nd^(3+) is bound to the PSⅡ protein-pigment complex and the electron transfer rate increases.The effect of Nd^(3+) on the photosynthesis and the growth of spinach was studied. The results show that Nd^(3+) improves the growth of spinach and increases chlorophyll content and photosynthetic rate. UV-Vis spectrum indicates that the Soret band of chl-a in spinach with NdCl_3 treatment is blue shifted by 2 nm, and the Q band is red shifted by 1 nm, and the ratio of Soret band intensity and Q band intensity increases. FT-IR spectra show that the peak of porphyrin ring in chl-a of spinach with NdCl_3 treatment is widened, suggesting that the formation of Nd^(3+)-chl-a. Treated by NdCl_3, the fluorescence emission peak of PSⅡ in spinach leaves is blue shifted by 12 nm and the intensity declines obviously, indicating that Nd^(3+) is bound to the PSⅡ protein-pigment complex and the electron transfer rate increases.

关 键 词：BOTANY Nd^(3+) ion SPINACH CHLOROPHYLL photosystemⅡ rare earths 

分 类 号：Q946.5[生物学—植物学] S511[农业科学—作物学]