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Muratova A, Lyubun Y, Sungurtseva I, Turkovskaya O, Nurzhanova A. Physiological and biochemical characteristic of Miscanthus × giganteus grown in heavy metal - oil sludge co-contaminated soil. J Environ Sci (China) 2022; 115:114-125. [PMID: 34969442 DOI: 10.1016/j.jes.2021.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/13/2021] [Accepted: 07/13/2021] [Indexed: 06/14/2023]
Abstract
The effect of oil sludge and zinc, present in soil both separately and as a mixture on the physiological and biochemical parameters of Miscanthus × giganteus plant was examined in a pot experiment. The opposite effect of pollutants on the accumulation of plant biomass was established: in comparison with uncontaminated control the oil sludge increased, and Zn reduced the root and shoot biomass. Oil sludge had an inhibitory effect on the plant photosynthetic apparatus, which intensified in the presence of Zn. The specific antioxidant response of M. × giganteus to the presence of both pollutants was a marked increase in the activity of superoxide dismutase (mostly owing to oil sludge) and glutathione-S-transferase (mostly owing to zinc) in the shoots. The participation of glutathione-S-transferase in the detoxification of both the organic and the inorganic pollutants was assumed. Zn inhibited the activity of laccase-like oxidase, whereas oil sludge promoted laccase and ascorbate oxidase activities. This finding suggests that these enzymes play a part in the oxidative detoxification of the organic pollutаnt. With both pollutants used jointly, Zn accumulation in the roots increased 6-fold, leading to increase in the efficiency of soil clean-up from the metal. In turn, Zn did not significantly affect the soil clean-up from oil sludge. This study shows for the first time the effect of co-contamination of soil with oil sludge and Zn on the physiological and biochemical characteristics of the bioenergetic plant M. × giganteus. The data obtained are important for understanding the mechanisms of phytoremediation with this plant.
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Affiliation(s)
- Anna Muratova
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov 410015, Russia.
| | - Yelena Lyubun
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov 410015, Russia
| | - Irina Sungurtseva
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov 410015, Russia
| | - Olga Turkovskaya
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov 410015, Russia
| | - Asil Nurzhanova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
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Zeng X, Sheng J, Zhu F, Wei T, Zhao L, Hu X, Zheng X, Zhou F, Hu Z, Diao Y, Jin S. Genetic, transcriptional, and regulatory landscape of monolignol biosynthesis pathway in Miscanthus × giganteus. BIOTECHNOLOGY FOR BIOFUELS 2020; 13:179. [PMID: 33117433 PMCID: PMC7590476 DOI: 10.1186/s13068-020-01819-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 10/16/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Miscanthus × giganteus is widely recognized as a promising lignocellulosic biomass crop due to its advantages of high biomass production, low environmental impacts, and the potential to be cultivated on marginal land. However, the high costs of bioethanol production still limit the current commercialization of lignocellulosic bioethanol. The lignin in the cell wall and its by-products released in the pretreatment step is the main component inhibiting the enzymatic reactions in the saccharification and fermentation processes. Hence, genetic modification of the genes involved in lignin biosynthesis could be a feasible strategy to overcome this barrier by manipulating the lignin content and composition of M. × giganteus. For this purpose, the essential knowledge of these genes and understanding the underlying regulatory mechanisms in M. × giganteus is required. RESULTS In this study, MgPAL1, MgPAL5, Mg4CL1, Mg4CL3, MgHCT1, MgHCT2, MgC3'H1, MgCCoAOMT1, MgCCoAOMT3, MgCCR1, MgCCR2, MgF5H, MgCOMT, and MgCAD were identified as the major monolignol biosynthetic genes in M. × giganteus based on genetic and transcriptional evidence. Among them, 12 genes were cloned and sequenced. By combining transcription factor binding site prediction and expression correlation analysis, MYB46, MYB61, MYB63, WRKY24, WRKY35, WRKY12, ERF021, ERF058, and ERF017 were inferred to regulate the expression of these genes directly. On the basis of these results, an integrated model was summarized to depict the monolignol biosynthesis pathway and the underlying regulatory mechanism in M. × giganteus. CONCLUSIONS This study provides a list of potential gene targets for genetic improvement of lignocellulosic biomass quality of M. × giganteus, and reveals the genetic, transcriptional, and regulatory landscape of the monolignol biosynthesis pathway in M. × giganteus.
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Affiliation(s)
- Xiaofei Zeng
- School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan, 430023 People’s Republic of China
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055 People’s Republic of China
| | - Jiajing Sheng
- School of Life Sciences, Nantong University, Nantong, 226019 People’s Republic of China
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Hubei Lotus Engineering Center, Wuhan University, Wuhan, 430072 People’s Republic of China
| | - Fenglin Zhu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Hubei Lotus Engineering Center, Wuhan University, Wuhan, 430072 People’s Republic of China
| | - Tianzi Wei
- School of Medicine, Southern University of Science and Technology, Shenzhen, 518055 People’s Republic of China
| | - Lingling Zhao
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Hubei Lotus Engineering Center, Wuhan University, Wuhan, 430072 People’s Republic of China
| | - Xiaohu Hu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Hubei Lotus Engineering Center, Wuhan University, Wuhan, 430072 People’s Republic of China
| | - Xingfei Zheng
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Hubei Lotus Engineering Center, Wuhan University, Wuhan, 430072 People’s Republic of China
| | - Fasong Zhou
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Hubei Lotus Engineering Center, Wuhan University, Wuhan, 430072 People’s Republic of China
| | - Zhongli Hu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Hubei Lotus Engineering Center, Wuhan University, Wuhan, 430072 People’s Republic of China
| | - Ying Diao
- School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan, 430023 People’s Republic of China
| | - Surong Jin
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, 430070 People’s Republic of China
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Zeinali F, Homaei A, Kamrani E, Patel S. Use of Cu/Zn-superoxide dismutase tool for biomonitoring marine environment pollution in the Persian Gulf and the Gulf of Oman. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 151:236-241. [PMID: 29353173 DOI: 10.1016/j.ecoenv.2018.01.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 01/09/2018] [Accepted: 01/11/2018] [Indexed: 06/07/2023]
Abstract
Superoxide dismutase (SOD) is the pivotal antioxidant enzyme that defends organisms against the oxidative stresses of superoxide radicals. In this experimental study, purification of SOD from the leaves of Avicennia marina (grey mangrove or white mangrove) from the family Acanthaceae, located in Sirik mangrove forest on the shore of the Gulf of Oman was performed, for the intended characterization of SOD. The Sirik AmSOD (A. marina SOD) expressed optimum activity in the pH range of 6-9 with the maximum activity at pH 8. The optimal temperature for Sirik AmSOD activity was 70°C. Comparison of the pH and temperature optima in two regions (the Persian Gulf and the Gulf of Oman) showed significant differences with P<0.05. The SOD from the Persian Gulf was more resistant against the environmental stressors, because of the biochemical adaption to this environment, which is harsher. The evidence from these results suggests that AmSOD has different characteristics in each place, and mangroves undergo different adaptations and require different protections. The results of the enzymatic research can be useful for ecological management of organisms.
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Affiliation(s)
- Farrokhzad Zeinali
- Department of Marine Biology, Faculty of Sciences, Hormozgan University, Bandarabbas, Iran
| | - Ahmad Homaei
- Department of Biochemistry, Faculty of Sciences, Hormozgan University, Bandarabbas, Iran.
| | - Ehsan Kamrani
- Department of Marine Biology, Faculty of Sciences, Hormozgan University, Bandarabbas, Iran; Fisheries Department, Faculty of Marine Sciences, University of Hormozgan, Bandar Abbas, Iran
| | - Seema Patel
- Bioinformatics and Medical Informatics Research Center, San Diego State University, San Diego 92182, USA
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Kan G, Wen H, Wang X, Zhou T, Shi C. Cloning and characterization of iron-superoxide dismutase in Antarctic yeast strain Rhodotorula mucilaginosa AN5. J Basic Microbiol 2017. [PMID: 28639705 DOI: 10.1002/jobm.201700165] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A novel superoxide dismutase gene from Antarctic yeast Rhodotorula mucilaginosa AN5 was cloned, sequenced, and then expressed in Escherichia coli. The R. mucilaginosa AN5 SOD (RmFeSOD) gene was 639 bp open reading frame in length, which encoded a protein of 212 amino acids with a deduced molecular mass of 23.5 kDa and a pI of 7.89. RmFeSOD was identified as iron SOD type with a natural status of homodimer. The recombinant RmFeSOD showed good pH stability in the pH 1.0-9.0 after 1 h incubation. Meanwhile, it was found to behave relatively high thermostability, and maintained more than 80% activity at 50 °C for 1 h. By addition of 1 mM metal ions, the enzyme activity increased by Zn2+ , Cu2+ , Mn2+ , and Fe3+ , and inhibited only by Mg2+ . RmFeSOD showed relatively low tolerance to some compounds, such as PMSF, SDS, Tween-80, Triton X-100, DMSO, β-ME, and urea. However, DTT showed no inhibition to enzyme activity. Using copper stress experiment, the RmFeSOD recombinant E. coli exhibited better growth than non-recombinant bacteria, which revealed that RmFeSOD might play an important role in the adaptability of heavy metals.
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Affiliation(s)
- Guangfeng Kan
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, China
| | - Hua Wen
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, China
| | - Xiaofei Wang
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, China
| | - Ting Zhou
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, China
| | - Cuijuan Shi
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai, China
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