AB - Vol. 15 No. 2 - Feature article

Endophytic bacteria in aquatic plants and their potential function in bioremediation

Chen WM, Tang YQ, Mori K, Wu XL


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


The diversity and distribution of endophytic bacteria associated with aquatic plants, as well as their potential function in the removal of organic pollutants from aquatic environments, were investigated in this study. Culturable 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. Some of the isolates were able to degrade naphthalene and pesticides and dissolve insoluble phosphate. In addition, the aquatic plants harbored more potentially opportunistic human and animal pathogenic bacteria than found in terrestrial plants. This suggests that the microbial community is selected by environmental conditions influenced by the discharge of human and animal waste and the historical existence of organic pollutants .


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