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Jiang M, Wang M, Zhang X, Zhang Z, Sha J, Wan J, Wei L, Wang R, Wang W, Wang W, Hu Z, Leng P, He X. Genome-wide identification of metal tolerance protein genes in Quercus dentata and their roles in response to various heavy metal stresses. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 283:116942. [PMID: 39216217 DOI: 10.1016/j.ecoenv.2024.116942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 08/22/2024] [Accepted: 08/23/2024] [Indexed: 09/04/2024]
Abstract
Metal tolerance protein (MTP) is a cation transporter that plays an important role in tolerance to heavy metal stress. However, thus far, there has been no genome-wide investigation of the MTP gene family in Quercus plants. Quercus dentata is one of the main constructive species of forest in northern China. It has strong tolerance to a variety of heavy metal stresses. In this study, 25 MTPs were identified from the Q. dentata genome and classified into three subfamilies and seven groups according to their sequence characteristics and phylogenetic relationships. Both tandem and segmental duplication events contributed to the expansion of the QdMTP gene family. Interestingly, all 10 tandem duplication events contributed to the expansion of the Mn-CDF subfamily. The expression of Mn-CDF subfamily members in different organs and tissues of Q. dentata was different, and they responded differently to manganese, iron, zinc and cadmium stress treatments. QdMTP10.7, a member of the Mn-CDF subfamily, enhanced yeast growth under manganese, zinc and iron stresses. The subcellular localization in tobacco leaf epidermis cells showed that QdMTP10.7 was located in vacuoles. These data generated from this study provide an important foundation to elucidate the biological roles of QdMTP genes related to heavy metal tolerance in Q. dentata.
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Affiliation(s)
- Meng Jiang
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China.
| | - Meijia Wang
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China.
| | - Xuejiao Zhang
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China.
| | - Zhen Zhang
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China.
| | - Jingjing Sha
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China.
| | - Junyi Wan
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China.
| | - Liyi Wei
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China.
| | - Rui Wang
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing 100193, China.
| | - Wenbo Wang
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China.
| | - Wenhe Wang
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China.
| | - Zenghui Hu
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China.
| | - Pingsheng Leng
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China; Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing 102206, China.
| | - Xiangfeng He
- College of Landscape Architecture, Beijing University of Agriculture, Beijing 102206, China; Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing 102206, China.
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Wu L, Wang R, Li M, Du Z, Jin Y, Shi Y, Jiang W, Chen J, Jiao Y, Hu B, Huang J. Functional analysis of a rice 12-oxo-phytodienoic acid reductase gene (OsOPR1) involved in Cd stress tolerance. Mol Biol Rep 2024; 51:198. [PMID: 38270739 DOI: 10.1007/s11033-023-09159-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 12/14/2023] [Indexed: 01/26/2024]
Abstract
BACKGROUND The accumulation of cadmium (Cd) in plants may compromise the growth and development of plants, thereby endangering human health through the food chain. Understanding how plants respond to Cd is important for breeding low-Cd rice cultivars. METHODS In this study, the functions of 12-oxo-phytodienoic acid reductase 1 (OsOPR1) were predicted through bioinformatics analysis. The expression levels of OsOPR1 under Cd stress were analyzed by using qRT-PCR. Then, the role that OsOPR1 gene plays in Cd tolerance was studied in Cd-sensitive yeast strain (ycf1), and the Cd concentration of transgenic yeast was analyzed using inductively coupled plasma mass spectrometry (ICP-MS). RESULTS Bioinformatics analysis revealed that OsOPR1 was a protein with an Old yellow enzyme-like FMN (OYE_like_FMN) domain, and the cis-acting elements which regulate hormone synthesis or responding abiotic stress were abundant in the promoter region, which suggested that OsOPR1 may exhibit multifaceted biological functions. The expression pattern analysis showed that the expression levels of OsOPR1 were induced by Cd stress both in roots and roots of rice plants. However, the induced expression of OsOPR1 by Cd was more significant in the roots compared to that in roots. In addition, the overexpression of OsOPR1 improved the Cd tolerance of yeast cells by affecting the expression of antioxidant enzyme related genes and reducing Cd content in yeast cells. CONCLUSION Overall, these results suggested that OsOPR1 is a Cd-responsive gene and may has a potential for breeding low-Cd or Cd-tolerant rice cultivars and for phytoremediation of Cd-contaminated in farmland.
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Affiliation(s)
- Longying Wu
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Ruolin Wang
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Mingyu Li
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Zhiye Du
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Yufan Jin
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Yang Shi
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Wenjun Jiang
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Ji Chen
- College of Agronomy, Sichuan Agricultural University, Sichuan, 611130, China.
| | - Yuan Jiao
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China
| | - Binhua Hu
- Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, Sichuan, 610066, China
| | - Jin Huang
- College of Ecology and Environment, Chengdu University of Technology, Sichuan, 610059, China.
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Han L, Wu X, Zhang X, Hou K, Zhang H, Shen C. Identification and functional analysis of cation-efflux transporter 1 from Brassica juncea L. BMC PLANT BIOLOGY 2022; 22:174. [PMID: 35387616 PMCID: PMC8985314 DOI: 10.1186/s12870-022-03569-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Brassica juncea behaves as a moderate-level accumulator of various heavy metal ions and is frequently used for remediation. To investigate the roles of metal ion transporters in B. juncea, a cation-efflux family gene, BjCET1, was cloned and functionally characterized. RESULTS BjCET1 contains 382 amino acid residues, including a signature motif of the cation diffusion facilitator protein family, six classic trans-membrane-spanning structures and a cation-efflux domain. A phylogenetic analysis showed that BjCET1 has a high similarity level with metal tolerance proteins from other Brassica plants, indicating that this protein family is highly conserved in Brassica. BjCET1 expression significantly increased at very early stages during both cadmium and zinc treatments. Green fluorescence detection in transgenic tobacco leaves revealed that BjCET1 is a plasma membrane-localized protein. The heterologous expression of BjCET1 in a yeast mutant increased the heavy-metal tolerance and decreased the cadmium or zinc accumulations in yeast cells, suggesting that BjCET1 is a metal ion transporter. The constitutive expression of BjCET1 rescued the heavy-metal tolerance capability of transgenic tobacco plants. CONCLUSIONS The data suggest that BjCET1 is a membrane-localized efflux transporter that plays essential roles in heavy metal ion homeostasis and hyper-accumulation.
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Affiliation(s)
- Lu Han
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036 China
- Zhejiang Key Laboratory of Organ Development and Regeneration, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036 Zhejiang China
| | - Xiaohua Wu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036 China
- Zhejiang Key Laboratory of Organ Development and Regeneration, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036 Zhejiang China
| | - Xinyu Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036 China
- Zhejiang Key Laboratory of Organ Development and Regeneration, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036 Zhejiang China
| | - Kailin Hou
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036 China
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou, 310036 China
| | - Hongshan Zhang
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036 China
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou, 310036 China
| | - Chenjia Shen
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036 China
- Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medicinal Plants, Hangzhou Normal University, Hangzhou, 310036 China
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