Effect of Nd3+ on Photosynthesis of Spinach
来源期刊：JOURNAL OF RARE EARTHS2004年第2期
论文作者：洪法水 王玲 刘超 郑蕾
Key words：botany; Nd3+ ion; spinach; chlorophyll; photosystemⅡ; rare earths;
Abstract: The effect of Nd3+ on the photosynthesis and the growth of spinach was studied.The results show that Nd3+ 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 NdCl3 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 NdCl3 treatment is widened,suggesting that the formation of Nd3+-chl-a.Treated by NdCl3,the fluorescence emission peak of PSⅡ in spinach leaves is blue shifted by 12 nm and the intensity declines obviously,indicating that Nd3+ is bound to the PSⅡ protein-pigment complex and the electron transfer rate increases.
洪法水1，王玲2，刘超1，郑蕾1
(1.College of Life Science;
2.Library,Suzhou University,Suzhou 215006,China)
Abstract:The effect of Nd3+ on the photosynthesis and the growth of spinach was studied.The results show that Nd3+ 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 NdCl3 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 NdCl3 treatment is widened,suggesting that the formation of Nd3+-chl-a.Treated by NdCl3,the fluorescence emission peak of PSⅡ in spinach leaves is blue shifted by 12 nm and the intensity declines obviously,indicating that Nd3+ is bound to the PSⅡ protein-pigment complex and the electron transfer rate increases.
Key words:botany; Nd3+ ion; spinach; chlorophyll; photosystemⅡ; rare earths;
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