稀土元素和UV-B辐射对根系微生态效应研究进展  

A review on the Micro-ecological Effects of Rare Earth Elements and UV-B Radiation on Plant Roots

作　　者：黄光荣[1,2] 周青[1] 王丽红[1] 

机构地区：[1]江南大学环境与土木工程学院,江苏无锡214122 [2]铜仁职业技术学院工程技术系,贵州铜仁554300

出　　处：《土壤通报》2012年第6期1522-1526,共5页Chinese Journal of Soil Science

基　　金：中央高校基本科研业务费专项资金(JUDCF11013);国家自然科学基金(20471030;30570323)项目资助

摘　　要：稀土(Rare earth,RE)在土壤中的累积日益严重及地球表面UV-B辐射持续增强,然而,植物地下部分(根系)是吸收水分及各种营养物质的重要器官,RE和UV-B辐射对植物根系的微生态效应衍生为农业环境安全研究的新方向,成为科学界关注的焦点,依据国内外研究报道,从根系生长及活力、激素及分泌物、抗氧化系统、细胞结构与功能、剂量效应关系等方面对RE和UV-B辐射的单一与复合响应及机理作了概述,为科学评价RE和UV-B辐射对植物生长与农业环境安全的潜在影响及后续研究,提供参考。Rare earth accumulates increasingly in the soil and the UV-B radiation on the earth surface is becoming serious.However,the underground parts（roots） of plants are vital organs for plants＇ water and nutrients absorption,therefore,the micro-ecological effects of RE and UV-B radiation on plant roots become a new direction of environmental safety research in agricultural and become a focus of the scientific community.According to researches at home and abroad,this paper gives an overview of RE and UV-B radiation＇s single and composite effect and mechanism from root growth and vigor,hormones and secretions,antioxidant systems,cell structure and function,the dose-response relationship and etc,providing a reference for the scientific evaluation of RE and UV-B radiation on plant growth and the potential impact and follow-up study of agricultural and environmental safety.

关 键 词：稀土元素 UV-B辐射 植物根系 微生态效应 

分 类 号：X171.5[环境科学与工程—环境科学] TQ133.3[化学工程—无机化工]