Journal
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART C-TOXICOLOGY AND CARCINOGENESIS
Volume 40, Issue 1, Pages 68-85Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/26896583.2022.2050155
Keywords
Endosulfan; bioremediation; degradation potential; characterization; bacterial strains
Categories
Funding
- Department of Science and Technology (DST), Government of India [SR/WOS-A/LS-257/2009]
Ask authors/readers for more resources
In this study, endosulfan tolerant bacterial strains were isolated from the rhizosphere of plants in a pesticide-contaminated area. The tolerance capacities and degradation potential of these strains were tested, and it was found that certain strains were able to survive high concentrations of endosulfan and degrade it to some extent.
In the present study, we have isolated endosulfan tolerant bacterial strains from the rhizosphere of plants growing in a pesticide-contaminated area. The tolerance capacities of these strains were tested up to 50,000 mu g ml(-1) of endosulfan. It was found that out of nineteen, four strains (EAG-EC-12, EAG-EC-13, EAG-EC-14, and EAG-EC-15) were capable of surviving up to 50,000 mu g ml(-1) endosulfan concentration in the media; thus, these four strains were selected for the characterization. Among four, two strains were identified as Serratia liquefaciens, while the other two strains were Bacillus sp. and Brevibacterium halotolerans. The result shows that growth of strain Serratia liquefaciens 1 and Serratia liquefaciens 2 in treated medium was statistically similar to that of control (cfu 6.8 x 10(7)) after 24 h, while strains Bacillus sp. and Brevibacterium halotolerans have shown growth significantly less than the control. The degradation potential of these strains was analyzed against 100 to 250 mu g ml(-1) of endosulfan in a Minimal Broth Medium (MBM), and it was recorded that only 9, 2, 7, and 19% of endosulfan (100 mu g ml(-1)) remain after a 72 h incubation period of Bacillus sp., Serratia liquefaciens 1, Serratia liquefaciens 2, and Brevibacterium halotolerans, respectively. This endosulfan removal potential of studied strains was decreased with an increase in concentration of endosulfan.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available