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Titel (primär) Comparative proteomics unravelled the hexachlorocyclohexane (HCH) isomers specific responses in an archetypical HCH degrading bacterium Sphingobium indicum B90A
Autor Sharma, M.; Singh, D.N.; Budhraja, R.; Sood, P.; Rawat, C.D.; Adrian, L.; Richnow, H.-H.; Singh, Y.; Negi, R.K.; Lal, R.;
Journal / Serie Environmental Science and Pollution Research
Erscheinungsjahr 2021
Department ISOBIO; UBT;
Sprache englisch;
Supplements https://static-content.springer.com/esm/art%3A10.1007%2Fs11356-021-13073-8/MediaObjects/11356_2021_13073_MOESM1_ESM.xlsx
https://static-content.springer.com/esm/art%3A10.1007%2Fs11356-021-13073-8/MediaObjects/11356_2021_13073_MOESM2_ESM.xlsx
Keywords Pesticide; Sphingobium indicum B90A; Hexachlorocyclohexane; Stress; Degradation; Proteomics; lin genes
Abstract Hexachlorocyclohexane (HCH) is a persistent organochlorine pesticide that poses threat to different life forms. Sphingobium indicum B90A that belong to sphingomonad is well-known for its ability to degrade HCH isomers (α-, β-, γ-, δ-), but effects of HCH isomers and adaptive mechanisms of strain B90A under HCH load remain obscure. To investigate the responses of strain B90A to HCH isomers, we followed the proteomics approach as this technique is considered as the powerful tool to study the microbial response to environmental stress. Strain B90A culture was exposed to α-, β-, γ-, δ-HCH (5 mgL-1) and control (without HCH) taken for comparison and changes in whole cell proteome were analyzed. In β- and δ-HCH-treated cultures growth decreased significantly when compared to control, α-, and γ-HCH-treated cultures. HCH residue analysis corroborated previous observations depicting the complete depletion of α- and γ-HCH, while only 66% β-HCH and 34% δ-HCH were depleted from culture broth. Comparative proteome analyses showed that β- and δ-HCH induced utmost systemic changes in strain B90A proteome, wherein stress-alleviating proteins such as histidine kinases, molecular chaperons, DNA binding proteins, ABC transporters, TonB proteins, antioxidant enzymes, and transcriptional regulators were significantly affected. Besides study confirmed constitutive expression of linA, linB, and linC genes that are crucial for the initiation of HCH isomers degradation, while increased abundance of LinM and LinN in presence of β- and δ-HCH suggested the important role of ABC transporter in depletion of these isomers. These results will help to understand the HCH-induced damages and adaptive strategies of strain B90A under HCH load which remained unravelled to date.
ID 24518
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24518
Sharma, M., Singh, D.N., Budhraja, R., Sood, P., Rawat, C.D., Adrian, L., Richnow, H.-H., Singh, Y., Negi, R.K., Lal, R. (2021):
Comparative proteomics unravelled the hexachlorocyclohexane (HCH) isomers specific responses in an archetypical HCH degrading bacterium Sphingobium indicum B90A
Environ. Sci. Pollut. Res.