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黄晓华教授课题组在ENVIRONMENTAL POLLUTION发表研究论文

发布时间:17-12-19 16:36:29 文章来源:化科院 浏览次数: [ 字号:


Combined acid rain and lanthanum pollution and its potential ecological risk for nitrogen assimilation in soybean seedling roots
Zhang, F (Zhang, Fan)[ 1 ] ; Cheng, MZ (Cheng, Mengzhu)[ 2 ] ; Sun, ZG (Sun, Zhaoguo)[ 1 ] ; Wang, LH (Wang, Lihong)[ 1 ] ; Zhou, Q (Zhou, Qing)[ 1,3 ]*; Huang, XH (Huang, Xiaohua)[ 2 ]*(黄晓华)

[ 1 ] Jiangnan Univ, Sch Environm & Civil Engn, State Key Lab Food Sci & Technol, Jiangsu Key Lab Anaerob Biotechnol, Wuxi 214122, Peoples R China
[ 2 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Jiangsu Key Lab Biomed Mat, Nanjing 210046, Jiangsu, Peoples R China
[ 3 ] Suzhou Univ Sci & Technol, Jiangsu Cooperat Innovat Ctr Water Treatment Tech, Suzhou 215009, Peoples R China

ENVIRONMENTAL POLLUTION,201712,231,524-532

Rare earth elements (REEs) are used in various fields, resulting in their accumulation in the environment. This accumulation has affected the survival and distribution of crops in various ways. Acid rain is a serious global environmental problem. The combined effects on crops from these two types of pollution have been reported, but the effects on crop root nitrogen assimilation are rarely known. To explore the impact of combined contamination from these two pollutants on crop nitrogen assimilation, the soybean seedlings were treated with simulated environmental pollution from acid rain and a representative rare earth ion, lanthanum ion (La3+), then the indexes related to plant nitrogen assimilation process in roots were determined. The results showed that combined treatment with pH 4.5 acid rain and 0.08 mM La3+ promoted nitrogen assimilation synergistically, while the other combined treatments all showed inhibitory effects. Moreover, acid rain aggravated the inhibitory effect of 1.20 or 0.40 mM La3+ on nitrogen assimilation in soybean seedling roots. Thus, the effects of acid rain and La3+ on crops depended on the combination levels of acid rain intensity and La3+ concentration. Acid rain increases the bioavailability of La3+, and the combined effects of these two pollutants were more serious than that of either pollutant alone. These results provide new evidence in favor of limiting overuse of REEs in agriculture. This work also provides a new framework for ecological risk assessment of combined acid rain and REEs pollution on soybean crops.


文章链接:
http://www.sciencedirect.com/science/article/pii/S0269749117315208?via%3Dihub
 


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