TY - JOUR
T1 - Isolation of mesotrione-degrading bacteria from aquatic environments in Brazil
AU - Pileggi, Marcos
AU - Pileggi, Sônia Alvim Veiga
AU - Olchanheski, Luiz Ricardo
AU - da Silva, Paulo Augusto Garbugio
AU - Munoz Gonzalez, Ana M.
AU - Koskinen, Willian C.
AU - Barber, Brian
AU - Sadowsky, Michael Jay
N1 - Funding Information:
The authors thank CAPES for financial support to M. Pileggi and to CNPq for travel grants to the USA. We also thank Syngenta Crop Protection for providing pure mesotrione.
PY - 2012/3
Y1 - 2012/3
N2 - Mesotrione is a benzoylcyclohexane-1,3-dione herbicide that inhibits 4-hydroxyphenyl pyruvate dioxygenase in target plants. Although it has been used since 2000, only a limited number of degrading microorganisms have been reported. Mesotrione-degrading bacteria were selected among strains isolated from Brazilian aquatic environments, located near corn fields treated with this herbicide. Pantoea ananatis was found to rapidly and completely degrade mesotrione. Mesotrione did not serve as a sole C, N, or S source for growth of P. ananatis, and mesotrione catabolism required glucose supplementation to minimal media. LC-MS/MS analyses indicated that mesotrione degradation produced intermediates other than 2-amino-4-methylsulfonyl benzoic acid or 4-methylsulfonyl-2-nitrobenzoic acid, two metabolites previously identified in a mesotrione-degrading Bacillus strain. Since P. ananatis rapidly degraded mesotrione, this strain might be useful for bioremediation purposes.
AB - Mesotrione is a benzoylcyclohexane-1,3-dione herbicide that inhibits 4-hydroxyphenyl pyruvate dioxygenase in target plants. Although it has been used since 2000, only a limited number of degrading microorganisms have been reported. Mesotrione-degrading bacteria were selected among strains isolated from Brazilian aquatic environments, located near corn fields treated with this herbicide. Pantoea ananatis was found to rapidly and completely degrade mesotrione. Mesotrione did not serve as a sole C, N, or S source for growth of P. ananatis, and mesotrione catabolism required glucose supplementation to minimal media. LC-MS/MS analyses indicated that mesotrione degradation produced intermediates other than 2-amino-4-methylsulfonyl benzoic acid or 4-methylsulfonyl-2-nitrobenzoic acid, two metabolites previously identified in a mesotrione-degrading Bacillus strain. Since P. ananatis rapidly degraded mesotrione, this strain might be useful for bioremediation purposes.
KW - Biodegradation
KW - Bioremediation
KW - Callisto
KW - Pantoea ananatis
KW - Xenobiotic
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U2 - 10.1016/j.chemosphere.2011.12.041
DO - 10.1016/j.chemosphere.2011.12.041
M3 - Article
C2 - 22245060
AN - SCOPUS:84857121505
SN - 0045-6535
VL - 86
SP - 1127
EP - 1132
JO - Chemosphere
JF - Chemosphere
IS - 11
ER -
