Microbial diversity and bioremediation of rhizospheric soils from Trindade Island - Brazil

JOURNAL OF ENVIRONMENTAL MANAGEMENT

卷:236

Article

Camacho-Montealegre, Celia Marcela¹  Rodrigues, Edmo Montes¹  Totola, Marcos Rogerio¹ 

[1] Univ Fed Vicosa, Dept Microbiol, Lab Biotecnol & Biodiversidade Meio Ambiente, Av PH Rolfs S-N, Vicosa, MG, Brazil

关键词: Hydrocarbon degradation;    Microbial community;    Rhizoremediation;    Microbial ecology;   

DOI  :  10.1016/j.jenvman.2019.02.013

来源: Elsevier

【 摘 要 】

Pristine environments may harbor complex microbial communities with metabolic potential for use in bioremediation of organic pollutants. This study aimed to evaluate crude oil biodegradation by microbial communities present in rhizospheric soils of Bulbostylis nesiotis and Cyperus atlanticus on Trindade Island and the compositional structure of these communities. After 60 days under aerobic conditions, Total Petroleum Hydrocarbon biodegradation ranged from 66 to 75%, depending on the plant species and the origin of the soil samples. There was no response of petroleum biodegradation to fertilization with N:P:K (80:160:80 mg dm(-3)). Soil contamination with crude oil did not necessarily reduce microbial diversity. The richness and diversity increased in contaminated soils in some specific situations. We conclude that microbial communities from pristine soils have the ability to remove hydrocarbons through biodegradation and that Bulbostylis nesiotis and Cyperus atlanticus inhabiting Trindade Island harbor rhizospheric microbial communities with potential for application in rhizoremediation.

【 授权许可】

Free