同济大学学报（自然科学版）2013，Vol.41Issue(7)：1072-1077,6.DOI:10.3969/j.issn.0253-374x.2013.07.019
低含量铅对镉污染下冬小麦根际微生物的影响
Effects of Low Lead Content on Rhizosphere Microorganism of Winter Wheat Seedlings Under Stress of Cadmium
摘要
Abstract
The Biolog Eco method was used to investigate the effect of low lead content (＜ 350 mg · kg-1 dry weight soil,soil pH ＞ 7.5) on the rhizosphere microbial community of potted winter wheat seedlings under the stress of cadmium.The low lead content significantly results in the shift of rhizosphere carbon source utilization of microorganisms,microbial metabolic diversity indexes,and microbial community structure in the stress of cadmium.And it mainly strengthens the inhibition of cadmium on the ability of the rhizosphere microbes to utilize different carbon resources,meanwile it enhances the effect of cadmium on the microbial metabolic diversity.Furthermore,the correlation between rhizosphere microbial metabolic diversity indexes and the content of simple sugars and phenolic acid exudates under PbCd is obviously different from that under Cd,and the correlation direction and the significant level all change evidently.关键词
低含量Pb/Cd污染/冬小麦幼苗/根际土壤微生物群落Key words
low lead content Pb/ Cd pollution/ winter wheat seedlings/ rhizosphere soil microbial community分类
资源环境引用本文复制引用
贾夏,何云华,周春娟..低含量铅对镉污染下冬小麦根际微生物的影响[J].同济大学学报（自然科学版）,2013,41(7):1072-1077,6.基金项目
国家自然科学基金(31270665) （31270665）
中央高校基本科研业务费专项资金(CHD2012JC041) （CHD2012JC041）
