PMID- 34954436 OWN - NLM STAT- MEDLINE DCOM- 20220127 LR - 20220127 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 426 DP - 2022 Mar 15 TI - A tau class glutathione-S-transferase (OsGSTU5) confers tolerance against arsenic toxicity in rice by accumulating more arsenic in root. PG - 128100 LID - S0304-3894(21)03069-7 [pii] LID - 10.1016/j.jhazmat.2021.128100 [doi] AB - Arsenic (As) considered as one of the hazardous metalloid that hampers various physiological activities in rice. To study the mechanism of As tolerance in rice, one differentially expressed tau class glutathione-S-transferase (OsGSTU5) has been selected and transgenic rice plants with knockdown (KD) and overexpressing (OE) OsGSTU5 were generated. Our results suggested that KD lines became less tolerant to As stress than WT plants, while OE lines showed enhanced tolerance to As. Under As toxicity, OE and KD lines showed enhanced and reduced antioxidant activities such as, SOD, PRX and catalase, respectively indicating its role in ROS homeostasis. In addition, higher malondialdehyde content, poor photosynthetic parameters and higher reactive oxygen species (ROS) in KD plant, suggests that knockdown of OsGSTU5 renders KD plants more susceptible to oxidative damage. Also, the relative expression profile of various transporters such as OsABCC1 (As sequestration), Lsi2 and Lsi6 (As translocaters) and GSH dependent activity of GSTU5 suggests that GSTU5 might help in chelation of As with GSH and sequester it into the root vacuole using OsABCC1 transporter and thus limits the upward translocation of As towards shoot. This study suggests the importance of GSTU5 as a good target to improve the As tolerance in rice. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Tiwari, Madhu AU - Tiwari M AD - Biotechnology and Molecular Biology Division, CSIR-National Botanical Research Institute, Lucknow 226001, India; Laboratory of Microbial Genetics, Department of Botany, Banaras Hindu University, Varanasi 221005, India. FAU - Kidwai, Maria AU - Kidwai M AD - Biotechnology and Molecular Biology Division, CSIR-National Botanical Research Institute, Lucknow 226001, India. FAU - Dutta, Prasanna AU - Dutta P AD - Biotechnology and Molecular Biology Division, CSIR-National Botanical Research Institute, Lucknow 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India. FAU - Narayan, Shiv AU - Narayan S AD - Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Plant Physiology Laboratory, CSIR-National Botanical Research Institute, Lucknow 226001, India. FAU - Gautam, Neelam AU - Gautam N AD - Biotechnology and Molecular Biology Division, CSIR-National Botanical Research Institute, Lucknow 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India. FAU - Chawda, Khushboo AU - Chawda K AD - Biotechnology and Molecular Biology Division, CSIR-National Botanical Research Institute, Lucknow 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India. FAU - Shirke, Pramod Arvind AU - Shirke PA AD - Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Plant Physiology Laboratory, CSIR-National Botanical Research Institute, Lucknow 226001, India. FAU - Mishra, Arun Kumar AU - Mishra AK AD - Laboratory of Microbial Genetics, Department of Botany, Banaras Hindu University, Varanasi 221005, India. FAU - Chakrabarty, Debasis AU - Chakrabarty D AD - Biotechnology and Molecular Biology Division, CSIR-National Botanical Research Institute, Lucknow 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India. Electronic address: chakrabartyd@nbri.res.in. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20211218 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (Antioxidants) RN - EC 2.5.1.18 (Glutathione Transferase) RN - GAN16C9B8O (Glutathione) RN - N712M78A8G (Arsenic) SB - IM MH - Antioxidants MH - *Arsenic/toxicity MH - Glutathione MH - Glutathione Transferase/genetics MH - *Oryza/genetics MH - Plant Roots OTO - NOTNLM OT - Arsenic OT - Arsenic transporters OT - Buthionine sulfoximine (BSO) OT - Glutathione-s-transferase (GST) OT - Rice EDAT- 2021/12/27 06:00 MHDA- 2022/01/28 06:00 CRDT- 2021/12/26 20:44 PHST- 2021/02/05 00:00 [received] PHST- 2021/09/03 00:00 [revised] PHST- 2021/12/15 00:00 [accepted] PHST- 2021/12/27 06:00 [pubmed] PHST- 2022/01/28 06:00 [medline] PHST- 2021/12/26 20:44 [entrez] AID - S0304-3894(21)03069-7 [pii] AID - 10.1016/j.jhazmat.2021.128100 [doi] PST - ppublish SO - J Hazard Mater. 2022 Mar 15;426:128100. doi: 10.1016/j.jhazmat.2021.128100. Epub 2021 Dec 18.