Effect of Nd^3＋ on Photosynthesis of Spinach
Effect of Nd^3＋ on Photosynthesis of Spinach
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发表时间：
2004
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通讯作者：
刘超;洪法水;王玲;郑蕾
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作者：
刘超;洪法水;王玲;郑蕾
研究了Nd3+对菠菜光合作用和生长的影响。结果表明，Nd3+促进了菠菜的生长，提高了菠菜的叶绿素含量和光合速率。UV-Vis光谱表明，NdCl3处理的菠菜Chl-a的Soret带蓝移了2 nm，Q带红移了1 nm，Soret带和Q带的比值增大。FT-IR光谱表明，NdCl3处理的菠菜Chl-a中的卟啉环峰变宽，表明NdCl3处理的菠菜形成了Nd3+-chl-。菠菜叶片PSⅡ的荧光发射峰蓝移12 nm，荧光强度明显减弱，表明Nd3+结合在PSⅡ蛋白-色素复合体上，电子传递速率增加。
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.