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Bolan S, Wijesekara H, Amarasiri D, Zhang T, Ragályi P, Brdar-Jokanović M, Rékási M, Lin JY, Padhye LP, Zhao H, Wang L, Rinklebe J, Wang H, Siddique KHM, Kirkham MB, Bolan N. Boron contamination and its risk management in terrestrial and aquatic environmental settings. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 894:164744. [PMID: 37315601 DOI: 10.1016/j.scitotenv.2023.164744] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 06/03/2023] [Accepted: 06/06/2023] [Indexed: 06/16/2023]
Abstract
Boron (B) is released to terrestrial and aquatic environments through both natural and anthropogenic sources. This review describes the current knowledge on B contamination in soil and aquatic environments in relation to its geogenic and anthropogenic sources, biogeochemistry, environmental and human health impacts, remediation approaches, and regulatory practices. The common naturally occurring sources of B include borosilicate minerals, volcanic eruptions, geothermal and groundwater streams, and marine water. Boron is extensively used to manufacture fiberglass, thermal-resistant borosilicate glass and porcelain, cleaning detergents, vitreous enamels, weedicides, fertilizers, and B-based steel for nuclear shields. Anthropogenic sources of B released into the environment include wastewater for irrigation, B fertilizer application, and waste from mining and processing industries. Boron is an essential element for plant nutrition and is taken up mainly as boric acid molecules. Although B deficiency in agricultural soils has been observed, B toxicity can inhibit plant growth in soils under arid and semiarid regions. High B intake by humans can be detrimental to the stomach, liver, kidneys and brain, and eventually results in death. Amelioration of soils and water sources enriched with B can be achieved by immobilization, leaching, adsorption, phytoremediation, reverse osmosis, and nanofiltration. The development of cost-effective technologies for B removal from B-rich irrigation water including electrodialysis and electrocoagulation techniques is likely to help control the predominant anthropogenic input of B to the soil. Future research initiatives for the sustainable remediation of B contamination using advanced technologies in soil and water environments are also recommended.
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Affiliation(s)
- Shiv Bolan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, Australia; Healthy Environments and Lives (HEAL) National Research Network, Australia
| | - Hasintha Wijesekara
- Department of Natural Resources, Faculty of Applied Sciences, Sabaragamuwa University, Belihuloya 70140, Sri Lanka
| | - Dhulmy Amarasiri
- Department of Natural Resources, Faculty of Applied Sciences, Sabaragamuwa University, Belihuloya 70140, Sri Lanka
| | - Tao Zhang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, People's Republic of China
| | - Péter Ragályi
- Institute for Soil Sciences, Centre for Agricultural Research, Budapest 1022, Hungary
| | - Milka Brdar-Jokanović
- Department of Vegetable and Alternative Crops, Institute of Field and Vegetable Crops, National Institute of the Republic of Serbia, Novi Sad 21000, Republic of Serbia
| | - Márk Rékási
- Institute for Soil Sciences, Centre for Agricultural Research, Budapest 1022, Hungary
| | - Jui-Yen Lin
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 807, Taiwan
| | - Lokesh P Padhye
- Department of Civil and Environmental Engineering, Faculty of Engineering, The University of Auckland, Auckland 1010, New Zealand
| | - Haochen Zhao
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia
| | - Liuwei Wang
- School of Environment, Tsinghua University, Beijing 100084, People's Republic of China
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, People's Republic of China; Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, Zhejiang 311300, People's Republic of China
| | - Kadambot H M Siddique
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, Australia
| | - M B Kirkham
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA
| | - Nanthi Bolan
- UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA 6009, Australia; The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, Australia; Healthy Environments and Lives (HEAL) National Research Network, Australia.
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Kumar V, Pandita S, Kaur R, Kumar A, Bhardwaj R. Biogeochemical cycling, tolerance mechanism and phytoremediation strategies of boron in plants: A critical review. CHEMOSPHERE 2022; 300:134505. [PMID: 35395266 DOI: 10.1016/j.chemosphere.2022.134505] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/28/2022] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
Boron (B) is an inimitable plant micronutrient, predominantly distinguished by super-narrow range between its deficiency and toxicity concentrations, which depends upon boron speciation in the growth media and form of living organisms. Moreover, the significant variations in its mobility amid different species, and distinctive inter and intra-species responses to extreme concentrations. Therefore, it is necessary to screen the bioavailability, speciation, biogeochemical cycling and exposure pathways of boron in the environment. The genes involved in the tolerance mechanism of boron in different plants were discussed in the current review paper. The functions related to scarcity and excess of boron concentration are assessed. The diverse plants implicated in phytoremediation of boron contaminated sites that restrict boron accumulation in food crops and health risks associated with soils containing deficit or surplus boron concentration were appraised. Ultimately, a summary of numerous strategies involved in the recovery and repair of boron-contaminated soils have been reviewed.
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Affiliation(s)
- Vinod Kumar
- Department of Botany, Government Degree College, Ramban, India.
| | | | - Ravdeep Kaur
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Ashok Kumar
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
| | - Renu Bhardwaj
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, India
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Rai GK, Bhat BA, Mushtaq M, Tariq L, Rai PK, Basu U, Dar AA, Islam ST, Dar TUH, Bhat JA. Insights into decontamination of soils by phytoremediation: A detailed account on heavy metal toxicity and mitigation strategies. PHYSIOLOGIA PLANTARUM 2021; 173:287-304. [PMID: 33864701 DOI: 10.1111/ppl.13433] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/19/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
In the current era of rapid industrialization, the foremost challenge is the management of industrial wastes. Activities such as mining and industrialization spill over a large quantity of toxic waste that pollutes soil, water, and air. This poses a major environmental and health challenge. The toxic heavy metals present in the soil and water are entering the food chain, which in turn causes severe health hazards. Environmental clean-up and reclamation of heavy metal contaminated soil and water are very important, and it necessitates efforts of environmentalists, industrialists, scientists, and policymakers. Phytoremediation is a plant-based approach to remediate heavy metal/organic pollutant contaminated soil and water in an eco-friendly, cost-effective, and permanent way. This review covers the effect of heavy metal toxicity on plant growth and physiological process, the concept of heavy metal accumulation, detoxification, and the mechanisms of tolerance in plants. Based on plants' ability to uptake heavy metals and metabolize them within tissues, phytoremediation techniques have been classified into six types: phytoextraction, phytoimmobilization, phytovolatilization, phytodegradation, rhizofiltration, and rhizodegradation. The development of research in this area led to the identification of metal hyper-accumulators, which could be utilized for reclamation of contaminated soil through phytomining. Concurrently, breeding and biotechnological approaches can enhance the remediation efficiency. Phytoremediation technology, combined with other reclamation technologies/practices, can provide clean soil and water to the ecosystem.
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Affiliation(s)
- Gyanendra K Rai
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Basharat A Bhat
- Department of Bioresources, University of Kashmir, Jammu and Kashmir, India
| | - Muntazir Mushtaq
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Lubna Tariq
- Department of Biotechnology, BGSB University, Jammu and Kashmir, India
| | - Pradeep K Rai
- Advance Center for Horticulture, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Umer Basu
- Division of Pathology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Aejaz A Dar
- School of Biotechnology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, Jammu, India
| | - Sheikh T Islam
- Department of Bioresources, University of Kashmir, Jammu and Kashmir, India
| | - Tanvir U H Dar
- Department of Biotechnology, BGSB University, Jammu and Kashmir, India
| | - Javaid A Bhat
- Ministry of Agriculture (MOA) Key Laboratory of Biology and Genetic Improvement of Soybean (General), State Key Laboratory for Crop Genetics and Germplasm Enhancement, Soybean Research Institute, National Center for Soybean Improvement, Nanjing Agricultural University, Nanjing, China
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Sharma SS, Kumar V, Dietz KJ. Emerging Trends in Metalloid-Dependent Signaling in Plants. TRENDS IN PLANT SCIENCE 2021; 26:452-471. [PMID: 33257259 DOI: 10.1016/j.tplants.2020.11.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 10/12/2020] [Accepted: 11/03/2020] [Indexed: 06/12/2023]
Abstract
Metalloids are semiconducting elements that constitute a small group in the periodic table of elements. Their occurrence in nature either poses an environmental threat or benefit to plants. The precise mechanisms or manner of crosstalk of metalloid interference and sensing remain open questions. Standard plant nutrient solutions contain the metalloid boron (B) as a micronutrient, while silicon (Si) is considered a beneficial element routinely supplied only to some plants such as grasses. By contrast, arsenic (As) is a severe environmental hazard to most organisms, including plants, while the less abundant metalloids germanium (Ge), antimony (Sb), and tellurium (Te) display variable degrees of toxicity. Here we review the molecular events and mechanisms that could explain the contrasting (or overlapping) action of metalloids on the cell and cell signaling.
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Affiliation(s)
- Shanti S Sharma
- Department of Botany, School of Life Sciences, Sikkim University, Gangtok 737102, Sikkim, India
| | - Vijay Kumar
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, Bielefeld, Germany; Department of Biosciences, Himachal Pradesh University, Shimla 171005, India
| | - Karl-Josef Dietz
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, Bielefeld, Germany.
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Brown biotechnology: a powerful toolbox for resolving current and future challenges in the development of arid lands. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2980-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Ou Y, Wu X, Gao Y, Wu Y, Yao Y. Analysis of physiological responses and expression profiling of boron transporter-like genes in response to excess boron in Populus russkii. CHEMOSPHERE 2019; 224:369-378. [PMID: 30831488 DOI: 10.1016/j.chemosphere.2019.02.130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 02/20/2019] [Accepted: 02/21/2019] [Indexed: 06/09/2023]
Abstract
Poplars (Populus species) are tolerant to boron (B) toxicity and have phytoremediation potential in B-contaminated soils. However, the detoxification strategy is largely unknown. To screen the key B transporter-like (BOR-like) genes for B compartmentation, Populus russkii plants were exposed to different levels of excess B and the plant growth, physiological responses, B distribution, and the expression patterns of BOR-like genes were characterized. P. russkii showed moderate tolerance to excess B although the plant growth was inhibited. The enhanced proline level and well-regulated antioxidant defense system were associated with B tolerance in leaves. The B absorbed by plants was predominantly allocated to leaves. Ten BOR-like genes were identified and seven of them showed tissue-specific expression patterns. PrBOR7 was identified as an important BOR-like gene possibly involved in the export of B from leaf cytoplasm because it was expressed specifically in leaves and induced by excess B. Yeast experiment assays verified that PrBOR7 functions as an efflux-type transporter and strongly improved cell tolerance to excess B. The expression patterns of BOR-like genes highlight the diversity of the family members in P. russkii, and PrBOR7 has potential as a candidate gene for B detoxification.
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Affiliation(s)
- Yongbin Ou
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China; Sichuan Key Laboratory of Soil Environment Treatment and Remediation, Chengdu, 610021, China
| | - Xiuli Wu
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Yongfeng Gao
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China; Sichuan Key Laboratory of Soil Environment Treatment and Remediation, Chengdu, 610021, China
| | - Yingqing Wu
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Yinan Yao
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China; Sichuan Key Laboratory of Soil Environment Treatment and Remediation, Chengdu, 610021, China.
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Zhao Q, Li J, Dai Z, Ma C, Sun H, Liu C. Boron tolerance and accumulation potential of four salt-tolerant plant species. Sci Rep 2019; 9:6260. [PMID: 31000729 PMCID: PMC6472400 DOI: 10.1038/s41598-019-42626-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 04/02/2019] [Indexed: 11/09/2022] Open
Abstract
Boron (B) is an essential element for plants, but excess B is phytotoxic. Since excess B often occurs along with high salinity in the environment, the purposes of the experiments are to screen plants that tolerate both excess B and high salinity for the remediation of B-contaminated saline water or soils. Here we tested the capacities of B tolerance and accumulation of four salt-tolerant plant species, Tripolium pannonicum, Suaeda glauca, Iris wilsonii, and Puccinellia tenuiflora using hydroponic culture systems, and compared their potential for application in phytoremediation. The maximum B supply concentrations for the survival of T. pannonicum, S. glauca, I. wilsonii, and P. tenuiflora are 40, 250, 700, and 300 mg/L, respectively. The maximum B concentrations in the shoot tissue of these plants are 0.45, 2.48, 15.21, and 8.03 mg/g DW, and in the root are 0.23, 0.70, 6.69, and 2.63 mg/g DW, respectively. Our results suggest that S. glauca, I. wilsonii, and P. tenuiflora are capable of tolerating and accumulating high levels of B, and I. wilsonii is a most promising candidate for the remediation of B-contaminated sites. This study will provide evidence in support of our future pilot studies (e.g., constructed wetlands) on the phytoremediation of B-contaminated water and soil.
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Affiliation(s)
- Qian Zhao
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China.,College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
| | - Jia Li
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
| | - Zheng Dai
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
| | - Chengcang Ma
- College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
| | - Hongwen Sun
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
| | - Chunguang Liu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China.
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Liu Q, Tang J, Wang W, Zhang Y, Yuan H, Huang S. Transcriptome analysis reveals complex response of the medicinal/ornamental halophyte Iris halophila Pall. to high environmental salinity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 165:250-260. [PMID: 30199796 DOI: 10.1016/j.ecoenv.2018.09.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 08/28/2018] [Accepted: 09/01/2018] [Indexed: 05/25/2023]
Abstract
The remediation and subsequent use of saline-alkaline land are of great significance to ecological environment construction and sustainable agricultural development. Iris halophila Pall. is a salt-tolerant medicinal and ornamental plant, which has good application prospects in the ecological construction of saline-alkaline land; therefore, study of the molecular mechanisms of salt tolerance in I. halophila has important theoretical and practical value. To evaluate the molecular mechanism of the response of I. halophila to salt toxicity, I. halophila seedlings were treated with salt (300 mM NaCl) and subjected to deep RNA sequencing. The clean reads were obtained and assembled into 297,188 unigenes. Among them, 1120 and 100 salt-responsive genes were identified in I. halophila shoots and roots, respectively. Among them, the key flavonoid and lignin biosynthetic genes, hormone signaling genes, sodium/potassium ion transporter genes, and transcription factors were analyzed and summarized. Quantitative reverse-transcription PCR analysis strengthened the reliability of the RNA sequencing results. This work provides an overview of the transcriptomic responses to salt toxicity in I. halophila and identifies the responsive genes that may contribute to its reduced salt toxicity. These results lay an important foundation for further study of the molecular mechanisms of salt tolerance in I. halophila and related species.
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Affiliation(s)
- Qingquan Liu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Jun Tang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China; Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
| | - Weilin Wang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Yongxia Zhang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Haiyan Yuan
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China
| | - Suzhen Huang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; The Jiangsu Provincial Platform for Conservation and Utilization of Agricultural Germplasm, Nanjing 210014, China.
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Papadakis IE, Tsiantas PI, Tsaniklidis G, Landi M, Psychoyou M, Fasseas C. Changes in sugar metabolism associated to stem bark thickening partially assist young tissues of Eriobotrya japonica seedlings under boron stress. JOURNAL OF PLANT PHYSIOLOGY 2018; 231:337-345. [PMID: 30388673 DOI: 10.1016/j.jplph.2018.10.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/09/2018] [Accepted: 10/10/2018] [Indexed: 06/08/2023]
Abstract
Boron (B) toxicity frequently affects plant performances and productivity, especially in arid and semi-arid environments. In this experiment, loquat seedlings were subjected to 25 μM (control) or 400 μM B (B excess) to test the hypothesis that (i) B alters sugar/polyol metabolism in polyol-producing tree species as loquat and (ii) changes of leaf and stem anatomy assist young tissues against toxic effect of B. Gas exchange was monitored from the beginning of the experiment (FBE) till one week after the first visible symptoms of B toxicity appeared in the upper part of the stems (147 d FBE). At 147 FBE, plant biometric parameters and pattern of B accumulation, leaf and stem anatomy, chlorophyll a fluorescence kinetics as well as biochemical measurements were assessed in top (asymptomatic) leaves and upper stem bark. Boron accumulated principally (in the row) in top leaves > top bark > top wood in B-stressed plants, but no changes in allocation pattern were found between controls and B-stressed plants. Excess B promoted the increase in the spongy layer of top leaves and caused the development of cork and numerous collenchyma cells with increased cell wall thickness. This mechanism, which has never been described before, can be considered an attempt to store excessive B in tissues where B ions are less harmful. The accumulation of sorbitol (B-complexing polyol) in top leaves and stem bark can be considered as a further attempt to detoxify B excess. However, B toxicity drastically affects the photosynthetic rate of top leaves, mainly due to non-stomatal limitations, i.e., reduction of ambient CO2 use efficiency and of photosystem II (PSII) efficiency, modification of the partitioning excess energy dissipation in PSII, thus leading to an increased level of lipid peroxidation. Our results suggest that changes in sugar metabolism associated with leaf and stem bark thickening partially assist (but not totally preserve) young tissues of loquat plants under B stress.
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Affiliation(s)
- Ioannis E Papadakis
- Department of Crop Science, Agricultural University of Athens, Athens, Greece.
| | - Petros I Tsiantas
- Department of Crop Science, Agricultural University of Athens, Athens, Greece
| | - Georgios Tsaniklidis
- Institute of Viticulture, Floriculture and Vegetable Crops of Heraklion, Hellenic Agricultural Organisation "Demeter", Lycovrissi, Greece
| | - Marco Landi
- Department of Agriculture, Food & Environment, University of Pisa, Pisa, Italy
| | - Maria Psychoyou
- Department of Natural Resources Management & Agricultural Engineering, Agricultural University of Athens, Athens, Greece
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Liu C, Dai Z, Cui M, Lu W, Sun H. Arbuscular mycorrhizal fungi alleviate boron toxicity in Puccinellia tenuiflora under the combined stresses of salt and drought. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 240:557-565. [PMID: 29758530 DOI: 10.1016/j.envpol.2018.04.138] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 04/27/2018] [Accepted: 04/29/2018] [Indexed: 05/08/2023]
Abstract
To investigate the effect of arbuscular mycorrhizal fungi (AMF) on boron (B) toxicity in plants under the combined stresses of salt and drought, Puccinellia tenuiflora was grown in the soil with the inoculation of Funneliformis mosseae and Claroideoglomus etunicatum. After three weeks of treatment, the plants were harvested to determine mycorrhizal colonization rates, plant biomass, as well as tissue B, phosphorus, sodium, and potassium concentrations. The results show that the combined stresses reduced mycorrhizal colonization. Mycorrhizal inoculation significantly increased plant biomass while reduced shoot B concentrations. Mycorrhizal inoculation also slightly increased shoot phosphorus and potassium concentrations, and reduced shoot sodium concentrations. F. mosseae and C. etunicatum were able to alleviate the combined stresses of B, salt, and drought. The two fungal species and their combination showed no significant difference in the alleviation of B toxicity. It is inferred that AMF is able to alleviate B toxicity in P. tenuiflora by increasing biomass and reducing tissue B concentrations. The increase in plant phosphorus and potassium, as well as the decrease in sodium accumulation that induced by AMF, can help plant tolerate the combined stresses of salt and drought. Our findings suggest that F. mosseae and C. etunicatum are potential candidates for facilitating the phytoremediation of B-contaminated soils with salt and drought stress.
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Affiliation(s)
- Chunguang Liu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China.
| | - Zheng Dai
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
| | - Mengying Cui
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
| | - Wenkai Lu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
| | - Hongwen Sun
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tianjin, 300350, China
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11
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Öztürk SE, Göktay M, Has C, Babaoğlu M, Allmer J, Doğanlar S, Frary A. Transcriptomic analysis of boron hyperaccumulation mechanisms in Puccinellia distans. CHEMOSPHERE 2018; 199:390-401. [PMID: 29453065 DOI: 10.1016/j.chemosphere.2018.02.070] [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: 10/26/2017] [Revised: 02/07/2018] [Accepted: 02/09/2018] [Indexed: 06/08/2023]
Abstract
Puccinellia distans, common alkali grass, is found throughout the world and can survive in soils with boron concentrations that are lethal for other plant species. Indeed, P. distans accumulates very high levels of this element. Despite these interesting features, very little research has been performed to elucidate the boron tolerance mechanism in this species. In this study, P. distans samples were treated for three weeks with normal (0.5 mg L-1) and elevated (500 mg L-1) boron levels in hydroponic solution. Expressed sequence tags (ESTs) derived from shoot tissue were analyzed by RNA sequencing to identify genes up and down-regulated under boron stress. In this way, 3312 differentially expressed transcripts were detected, 67.7% of which were up-regulated and 32.3% of which were down-regulated in boron-treated plants. To partially confirm the RNA sequencing results, 32 randomly selected transcripts were analyzed for their expression levels in boron-treated plants. The results agreed with the expected direction of change (up or down-regulation). A total of 1652 transcripts had homologs in A. thaliana and/or O. sativa and mapped to 1107 different proteins. Functional annotation of these proteins indicated that the boron tolerance and hyperaccumulation mechanisms of P. distans involve many transcriptomic changes including: alterations in the malate pathway, changes in cell wall components that may allow sequestration of excess boron without toxic effects, and increased expression of at least one putative boron transporter and two putative aquaporins. Elucidation of the boron accumulation mechanism is important in developing approaches for bioremediation of boron contaminated soils.
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Affiliation(s)
- Saniye Elvan Öztürk
- Department of Molecular Biology and Genetics, Izmir Institute of Technology, Urla, Izmir 35430, Turkey
| | - Mehmet Göktay
- Department of Molecular Biology and Genetics, Izmir Institute of Technology, Urla, Izmir 35430, Turkey
| | - Canan Has
- Department of Molecular Biology and Genetics, Izmir Institute of Technology, Urla, Izmir 35430, Turkey
| | - Mehmet Babaoğlu
- Department of Field Crops, Selcuk University, Selçuklu, Konya, 42030, Turkey
| | - Jens Allmer
- Department of Molecular Biology and Genetics, Izmir Institute of Technology, Urla, Izmir 35430, Turkey
| | - Sami Doğanlar
- Department of Molecular Biology and Genetics, Izmir Institute of Technology, Urla, Izmir 35430, Turkey
| | - Anne Frary
- Department of Molecular Biology and Genetics, Izmir Institute of Technology, Urla, Izmir 35430, Turkey.
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Zhu H, Bañuelos G. Evaluation of two hybrid poplar clones as constructed wetland plant species for treating saline water high in boron and selenium, or waters only high in boron. JOURNAL OF HAZARDOUS MATERIALS 2017; 333:319-328. [PMID: 28376360 DOI: 10.1016/j.jhazmat.2017.03.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/02/2017] [Accepted: 03/19/2017] [Indexed: 06/07/2023]
Abstract
Wetland mesocosms were constructed to assess two hybrid poplar clones (Populustrichocarpa×P. deltoides×P. nigra '345-1' and '347-14') for treating saline water high in boron (B) and selenium (Se), and a hydroponic experiment was performed to test the B tolerance and B accumulation in both clones. In the mesocosm experiment, clone 345-1 exhibited no toxic symptoms at an EC of 10mScm-1, while clone 347-14 showed slight toxic symptoms at 7.5mScm-1. The removal percentages of B, Se, sodium (Na), and chloride (Cl) ranged from 26.7-45.6%, 50-69.4%, 18.4-24.0%, and 15.8-23.2%, respectively, by clone 345-1, and from 22.9-29.4%, 31.7-43.8%, 16.5-24.2%, and 14.9-23.9%, respectively, by clone 347-1. In the hydroponic experiment, B toxic symptoms were observed at treatments of 150 and 200mg B L-1 for clones 345-1 and 347-14, respectively. The greatest leaf B concentrations of 3699 and 1913mgkg-1 were found in clone 345-1 and clone 347-14, respectively. The translocation factor (TF) of clone 347-14 was less than clone 345-1. Clone 345-1 only showed significantly greater (P<0.05) B removal percentages than clone 347-14 when B treatment was <20mg B L-1. In conclusion, both tested poplar clones competitively accumulated and removed B and Se in constructed wetlands.
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Affiliation(s)
- Hui Zhu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, PR China
| | - Gary Bañuelos
- USDA, Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center, 9611 South Riverbend Avenue, Parlier, CA 93648-9757, USA.
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