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Zhang K, Liu F, Zhang H, Duan Y, Luo J, Sun X, Wang M, Ye D, Wang M, Zhu Z, Li D. Trends in phytoremediation of heavy metals-contaminated soils: A Web of science and CiteSpace bibliometric analysis. CHEMOSPHERE 2024; 352:141293. [PMID: 38280645 DOI: 10.1016/j.chemosphere.2024.141293] [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: 10/05/2023] [Revised: 01/21/2024] [Accepted: 01/22/2024] [Indexed: 01/29/2024]
Abstract
Heavy metals pollution in soils is an urgent environmental issue worldwide. Phytoremediation is a green and eco-friendly way of remediating heavy metals. However, a systematic overview of this field is limited, and little is known about future development trends. Therefore, we used CiteSpace software to conduct bibliometric and visual analyses of published literature in the field of phytoremediation of heavy metals in soils from the Web of Science core collection and identified research hotspots and development trends in this field. Researchers are paying increased attention to phytoremediation of heavy metals in soils, especially environmental researchers. A total of 121 countries or regions, 3790 institutions, 4091 funded organisations and 15,482 authors have participated in research in this area. China, India, and Pakistan are the largest contributors. There has been extensive cooperation between countries, institutions, and authors worldwide, but there is a lack of cooperation among top authors. 'Calcareous soil', 'Co-contaminated soil' and 'Metal availability' are the most intensively investigated topics. 'EDTA', 'Plant growth-promoting Rhizobacteria', 'Photosynthesis', 'Biochar' and 'Phytoextraction' are research hotspots in this field. In addition, more and more researchers are beginning to pay attention to research on co-contaminated soil, metal availability, chelating agents, and microbial-assisted phytoremediation. In summary, bibliometric, and visual analyses in the field of phytoremediation of heavy metals in soils identifies probable directions for future research and provides a resource through which to better understand this rapidly advancing subject.
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Affiliation(s)
- Kailu Zhang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Fan Liu
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Haixiang Zhang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Yali Duan
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Jialiang Luo
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Xiaoyan Sun
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Meng Wang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Dandan Ye
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Miaomiao Wang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Zhiqiang Zhu
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China.
| | - Dong Li
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China.
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Zhang M, Xiao N, Yang H, Li Y, Gao F, Li J, Zhang Z. The layout measures of micro-sprinkler irrigation under plastic film regulate tomato soil bacterial community and root system. FRONTIERS IN PLANT SCIENCE 2023; 14:1136439. [PMID: 36968356 PMCID: PMC10030703 DOI: 10.3389/fpls.2023.1136439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION The change in rhizosphere soil bacterial community and root system under new water-saving device is not clear. METHODS A completely randomized experimental design was used to explore the effects of different micropore group spacing (L1: 30 cm micropore group spacing, L2: 50 cm micropore group spacing) and capillary arrangement density (C1: one pipe for one row, C2: one pipe for two rows, C3: one pipe for three rows) on tomato rhizosphere soil bacteria community, roots and tomato yield under MSPF. The bacteria in tomato rhizosphere soil were sequenced by 16S rRNA gene amplicon metagenomic sequencing technology, the interaction of bacterial community, root system and yield in tomato rhizosphere soil was quantitatively described based on regression analysis. RESULTS Results showed that L1 was not only beneficial to the development of tomato root morphology, but also promoted the ACE index of tomato soil bacterial community structure and the abundance of nitrogen and phosphorus metabolism functional genes. The yield and crop water use efficiency (WUE) of spring tomato and autumn tomato in L1 were about 14.15% and 11.27%, 12.64% and 10.35% higher than those in L2. With the decrease of capillary arrangement density, the diversity of bacterial community structure in tomato rhizosphere soil decreased, and the abundance of nitrogen and phosphorus metabolism functional genes of soil bacteria also decreased. The small abundance of soil bacterial functional genes limited the absorption of soil nutrients by tomato roots and roots morphological development. The yield and crop water use efficiency of spring and autumn tomato in C2 were significantly higher than those in C3 about 34.76% and 15.23%, 31.94% and 13.91%, respectively. The positive interaction between soil bacterial community and root morphological development of tomato was promoted by the capillary layout measures of MSPF. DISCUSSION The L1C2 treatment had a stable bacterial community structure and good root morphological development, which positively promoted the increase of tomato yield. The interaction between soil microorganisms and roots of tomato was regulated by optimizing the layout measures of MSPF to provide data support for water-saving and yield-increasing of tomato in Northwest China.
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Affiliation(s)
- Mingzhi Zhang
- Faculty of Engineering, Huanghe Science and Technology University, Zhengzhou, China
- Institute of Water Resources and Rural Water Conservancy, Henan Provincial Water Conservancy Research Institute, Zhengzhou, China
| | - Na Xiao
- Faculty of Engineering, Huanghe Science and Technology University, Zhengzhou, China
| | - Haijian Yang
- Faculty of Engineering, Huanghe Science and Technology University, Zhengzhou, China
| | - Yuan Li
- Vegetable station, Northwest Land and Resources Research Center, Shaanxi Normal University, Xi’an, China
| | - Fangrong Gao
- Hydraulic Research Laboratory, Yellow River Hydrologic Survey Planning and Design Co., Ltd., Zhengzhou, China
| | - Jianbin Li
- Agricultural Technology Extension Center of Xi’an City, Xi’an, Shaanxi, China
| | - Zhenxing Zhang
- Key Laboratory of Vegetation Ecology, Ministry of Education, Northeast Normal University, Changchun, China
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, China
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Yu J, Zhang J, Hong H. Characterization and Expression Analysis of Four Cadmium-Tolerance-Associated Genes of Avicennia marina (Forsk.). BIOLOGY 2023; 12:biology12020216. [PMID: 36829494 PMCID: PMC9952839 DOI: 10.3390/biology12020216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/31/2022] [Accepted: 01/09/2023] [Indexed: 01/31/2023]
Abstract
Mangroves colonize the intertidal area of estuaries (e.g., Pichavaram, Payardia, and Mai Po) with remarkable cadmium (Cd) pollution. A study on the mechanism of mangrove plant response to Cd pollution can help to understand the adaptive characteristics of plants under Cd stress. This study explored the roles of peroxidase (PRX), pectate lyase (PL), and phytosulfokine (PSK) genes in cadmium tolerance of mangrove Avicennia marina. Full-length sequences of four genes (i.e., AmPRX1, AmPRX2, AmPL, and AmPSK) associated with metal tolerance were identified with suppression subtractive hybridization and rapid amplification of cDNA ends. These genes showed the characteristic features of the respective protein family, indicating functions similar to other plant proteins. Real-time quantitative PCR analysis demonstrated that cadmium exposure resulted in differences in expression patterns among the tissues. Our findings emphasize the complex regulatory mechanism of these four genes in response to trace metal pollution and reveal their functions in metabolic signaling during the stress response.
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Affiliation(s)
- Jinfeng Yu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361102, China
- Xiamen Innovax Biotech, Xiamen 361022, China
| | - Jicheng Zhang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361102, China
- Frasergen, Wuhan 430075, China
| | - Hualong Hong
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361102, China
- Correspondence:
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Liu J, Zhang D, Luo Y, Zhang Y, Xu L, Chen P, Wu E, Ma Q, Wang H, Zhao L, Feng B. Cadmium tolerance and accumulation from the perspective of metal ion absorption and root exudates in broomcorn millet. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 250:114506. [PMID: 36608571 DOI: 10.1016/j.ecoenv.2023.114506] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 12/27/2022] [Accepted: 01/02/2023] [Indexed: 06/17/2023]
Abstract
Cadmium (Cd) is a persistent heavy metal that poses environmental and public health concerns. This study aimed to identify the potential biomarkers responsible for Cd tolerance and accumulation by investigating the response of the content of essential metal elements, transporter gene expression, and root exudates to Cd stress in broomcorn millet (Panicum miliaceum). A hydroponics experiment was conducted using two broomcorn millet cultivars with distinct Cd tolerance levels and accumulation phenotypes (Cd-tolerant and Cd-sensitive cultivars). Cd stress inhibited lateral root growth, especially in the Cd-sensitive cultivar. Furthermore, Cd accumulation was significantly greater in the Cd-tolerant cultivar than in the Cd-sensitive cultivar. Cd stress significantly inhibited the absorption of essential metal elements and significantly increased the calcium concentration. Differentially expressed genes involved in metal ion transport were identified via transcriptome analysis. Cd stress altered the composition of root exudates, thus increasing lipid species and decreasing alkaloid, lignan, sugar, and alcohol species. Moreover, Cd stress significantly reduced most alkaloid, organic acid, and phenolic acid exudates in the Cd-tolerant cultivar, while it increased most lipid and phenolic acid exudates in the Cd-sensitive cultivar. Some significantly changed root exudates (ferulic acid, O-coumaric acid, and spermine) are involved in the phenylalanine biosynthesis, and arginine and proline metabolic pathways, thus, may be potential biomarkers of Cd stress response. Overall, metal ion absorption and root exudates are critical for Cd tolerance and accumulation in broomcorn millet. These findings provide valuable insights into improving Cd phytoremediation by applying mineral elements or metabolites.
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Affiliation(s)
- Jiajia Liu
- College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Dazhong Zhang
- College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yan Luo
- College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yuanbo Zhang
- College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Lei Xu
- College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Pengliang Chen
- College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Enguo Wu
- College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qian Ma
- College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Honglu Wang
- College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Lin Zhao
- Shaanxi Provincial Research Academy of Environmental Sciences, Xi'an, Shaanxi 710061, China.
| | - Baili Feng
- College of Agronomy, State Key Laboratory of Crop Stress Biology in Arid Areas, Northwest A&F University, Yangling, Shaanxi 712100, China.
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