稀土学报(英文版)
稀土學報(英文版)
희토학보(영문판)
JOURNAL OF RARE EARTHS
2004年
2期
306-310
,共5页
刘超%洪法水%王玲%郑蕾
劉超%洪法水%王玲%鄭蕾
류초%홍법수%왕령%정뢰
botany%Nd3+ ion%spinach%chlorophyll%photosystemⅡ%rare earths
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.
