Kabiraj, A and Halder, U and Chitikineni, A and Varshney, R K and Bandopadhyay, R (2023) Insight into the genome of an arsenic loving and plant growth-promoting strain of Micrococcus luteus isolated from arsenic contaminated groundwater. Environmental Science and Pollution Research (TSI), 31. pp. 39063-39076. ISSN 0944-1344
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Abstract
Contamination of arsenic in drinking water and foods is a threat for human beings. To achieve the goal for the reduction of arsenic availability, besides conventional technologies, arsenic bioremediation by using some potent bacteria is one of the hot topics for researchers. In this context, bacterium, AKS4c was isolated from arsenic contaminated water of Purbasthali, West Bengal, India, and through draft genome sequence; it was identified as a strain of Micrococcus luteus that comprised of 2.4 Mb genome with 73.1% GC content and 2256 protein coding genes. As the accessory genome, about 22 genomic islands (GIs) associated with many metal-resistant genes were identified. This strain was capable to tolerate more than 46,800 mg/L arsenate and 390 mg/L arsenite salts as well as found to be tolerable to multi-metals such as Fe, Pb, Mo, Mn, and Zn up to a certain limit of concentrations. Strain AKS4c was able to oxidize arsenite to less toxic arsenate, and its arsenic adsorption property was qualitatively confirmed through X-ray fluorescence (XRF) and Fourier transform infrared spectroscopy (FTIR) analysis. Quantitative estimation of plant growth-promoting attributes like Indole acetic acid (IAA), Gibberellic acid (GA), and proline production and enhancement of rice seedling growth in laboratory condition leads to its future applicability in arsenic bioremediation as a plant growth-promoting rhizobacteria (PGPR).
| Item Type: | Article |
|---|---|
| Divisions: | Center of Excellence in Genomics and Systems Biology |
| CRP: | UNSPECIFIED |
| Uncontrolled Keywords: | Arsenic, Bioremediation, Micrococcus luteus, Purbasthali, Oxidation, PGPR |
| Subjects: | Others > Genetics and Genomics Others > Plant Growth Others > Water Resources |
| Depositing User: | Mr Nagaraju T |
| Date Deposited: | 04 Aug 2025 08:11 |
| Last Modified: | 04 Aug 2025 08:11 |
| URI: | http://oar.icrisat.org/id/eprint/13261 |
| Official URL: | https://link.springer.com/article/10.1007/s11356-0... |
| Projects: | UNSPECIFIED |
| Funders: | UNSPECIFIED |
| Acknowledgement: | We are thankful to UGC-Centre for Advanced Study, Department of Botany and DST-FIST, The University of Burdwan, Burdwan, for pursuing all the research facilities. We also acknowledge University Science and Instrumentation Centre (USIC), BU. RB and AK are thankful to DHESTBT (WB-DBT) [Memo. No. 819(Sanc.)/STBT-11012(11)/11/2020-ST SEC], and UH is thankful to SRF (State Fund) for the financial assistance [Fc (Sc.)/RS/SF/BOT./2017-18/22]. |
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