Biological Function of REE in Plants & Microbes
来源期刊：JOURNAL OF RARE EARTHS2005年第6期
论文作者：Li Xikun Qiu Guanming Zhou Wei Li Wei
Key words：bioinorganic chemistry; biological function of REE; plants and microbes; dosage effect; bioaccumulation; rare earths;
Abstract: Rare earth elements (REE) and their compounds are widely applied in agronomic and medical fields for many years. The bioinorganic chemical research of REE during the past few years indicates that REE play important roles in the promotion of photosynthetic rate as well as root absorption, regulation of hormone and nitrogen metabolism, and suppression of microbes, etc. The metallic or non-metallic targets of key biomolecule in various physiological processes can be chosen by REE for the chelation or replacement, which enables REE to regulate the biological functions or behaviors of those biomolecule and consequently leads to significant embodiment of biological function of REE in plants and microbes.Overdose of REE, however, shows an inhibitory effect on living organisms. Therefore, this paper proposes two suggestions that will be available in the extension of full use of REE's biological function. One is to obey the dose law of REE and control REE concentrations within a safe range. The other is to further test the bioaccumulation and long-period influence of REE on organisms.
Li Xikun1，Qiu Guanming3，Zhou Wei2，Li Wei4
(1.Nanjing University of Technology, Nanjing 210009, China;
2.Institute of Genetic Rescourses , College of Life Science, Nanjing Normal University, Nanjing 210097, China;
3.School of Materials and Engineering, Changchun University of Science and Technology, Changchun 130022,China;
4.Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China)
Abstract:Rare earth elements (REE) and their compounds are widely applied in agronomic and medical fields for many years. The bioinorganic chemical research of REE during the past few years indicates that REE play important roles in the promotion of photosynthetic rate as well as root absorption, regulation of hormone and nitrogen metabolism, and suppression of microbes, etc. The metallic or non-metallic targets of key biomolecule in various physiological processes can be chosen by REE for the chelation or replacement, which enables REE to regulate the biological functions or behaviors of those biomolecule and consequently leads to significant embodiment of biological function of REE in plants and microbes.Overdose of REE, however, shows an inhibitory effect on living organisms. Therefore, this paper proposes two suggestions that will be available in the extension of full use of REE''s biological function. One is to obey the dose law of REE and control REE concentrations within a safe range. The other is to further test the bioaccumulation and long-period influence of REE on organisms.
Key words:bioinorganic chemistry; biological function of REE; plants and microbes; dosage effect; bioaccumulation; rare earths;
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