Biorremediation of phenylurea herbicides by a novel degrading bacterium, Advenella sp. JRO

Comunicación oral presentada en el VIII International Conference on Environmental, Industrial and Applied Microbiology - BioMicroWorld2018 Book of Abstracts Torremolinos-Málaga (Spain), 24-25 May 2018 ; The phenylurea herbicides are one of the most important and used in the world and are probably the most widely distributed contaminants in the environment. Several researchers have focused on degradation of pesticide by microorganisms. In this work, an isolated strain in our laboratory from a highly contaminated industrial site Advenella sp. JRO, has been employed for phenylurea herbicides biodegradation, in particular, diuron, linuron, chlorotoluron, isoproturon and fluometuron. All phenylureas were metabolized by Advenella sp. JRO, in a percent of biotransformation after 60 days of 58.3%, 40.0%, 39%, 59% and 15.2% for diuron, isoproturon, linuron, fluometuron and chlorotoluron respectively. 3,4-Dichloroaniline (3,4-DCA) has been described as main metabolite of diuron and linuron and is considered as highly toxic to different micro- and macroorganisms. Hence, Advenella sp. JRO was tested in our laboratory to remove it, reaching an extent of 3,4-DCA biodegradation of about 98.1% after 14 days where DT50 was 2 days. ; Peer Reviewed