Distribution of culturable endophytic bacteria in aquatic plants and their potential for bioremediation in polluted waters

Aquatic Biology

Yue-Qin Tang¹  Xiao-Lei Wu¹  Kazuhiro Mori¹  Wei-Min Chen¹ 

关键词: Aquatic plants;    Endophytic bacteria;    Phytoremediation;    Organic pollutants;    Phosphorus;   

DOI  :  10.3354/ab004422

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: Plant−bacterial asscociations can improve the degradation of organic pollutants in soil. However, little is known about the diversity and distribution of endophytic bacteria associated with aquatic plants and their potential to enhance phytoremediation of aquatic environments. In the present study, endophytic bacteria were isolated from 4 species of aquatic plants: Phragmites communis, Potamogeton crispus, Nymphaea tetragona and Najas marina. The isolated bacteria were classified into 12 genera in the Gammaproteobacteria, Bacilli, Alphaproteobacteria, Flavobacteria and Actinobacteria. In addition, different strains and/or different concentrations of the bacteria were isolated from different parts of the 4 plants, suggesting the different parts of the 4 plants harbored different endophytic bacteria. Some of the isolates degraded naphthalene and pesticides and some showed potential to dissolve insoluble phosphate. This is one of the first studies to isolate and compare culturable endophytic bacteria among different aquatic plants. This research indicates that culturable endophytes in aquatic plants are very diverse, but are dominated by Gammaproteobacteria, and have the potential to enhance in situ phytoremediation.

【 授权许可】

Unknown