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Kafle A, Garcia K. Cesium could be used as a proxy for potassium in mycorrhizal Medicago truncatula. PLANT SIGNALING & BEHAVIOR 2022; 17:2134676. [PMID: 36259539 PMCID: PMC9586695 DOI: 10.1080/15592324.2022.2134676] [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: 09/19/2022] [Revised: 10/05/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Arbuscular mycorrhizal (AM) fungi interact with the roots of most land plants and help them to acquire various mineral resources from the soil, including potassium (K+). However, tracking K+ movement in AM symbiosis remains challenging. Recently, we reported that rubidium can be used as a proxy for K+ in mycorrhizal Medicago truncatula. In the present work, we investigated the possibility of using cesium (Cs+) as another proxy for K+ in AM symbiosis. Plants were placed in growing systems that include a separate compartment only accessible to the AM fungus Rhizophagus irregularis isolate 09 and in which various amounts of cesium chloride (0 mM, 0.5 mM, 1.5 mM, or 3.75 mM) were supplied. Plants were watered with sufficient K+ or K+-free nutrient solutions, and shoot and root biomass, fungal colonization, and K+ and Cs+ concentrations were recorded seven weeks after inoculation. Our results indicate that Cs+ accumulated in plant tissues only when K+ was present in the nutrient solution and when the highest concentration of Cs+ was used in the fungal compartment. Consequently, we conclude that Cs+ could be used as a proxy for K+ in AM symbiosis, but with serious limitations.
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Affiliation(s)
- Arjun Kafle
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, USA
| | - Kevin Garcia
- Department of Crop and Soil Sciences, North Carolina State University, Raleigh, North Carolina, USA
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Singh BSM, Dhal NK, Kumar M, Mohapatra D, Seshadri H, Rout NC, Nayak M. Phytoremediation of 137Cs: factors and consequences in the environment. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2022; 61:341-359. [PMID: 35869396 DOI: 10.1007/s00411-022-00985-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 06/27/2022] [Indexed: 06/15/2023]
Abstract
Radionuclide contamination is a concerning threat due to unexpected nuclear disasters and authorized discharge of radioactive elements, both in the past and in present times. Use of atomic power for energy generation is associated with unresolved issues concerning storage of residues and contaminants. For example, the nuclear accidents in Chernobyl 1986 and Fukushima 2011 resulted in considerable deposition of cesium (Cs) in soil, along with other radionuclides. Among Cs radioactive variants, the anthropogenic radioisotope 137Cs (t½ = 30.16 years) is of serious environmental concern, owing to its rapid incorporation into biological systems and emission of β and γ radiation during the decaying process. To remediate contaminated areas, mostly conventional techniques are applied that are not eco-friendly. Hence, an alternative green technology, i.e., phytoremediation, should in future be considered and implemented. This sustainable technology generates limited secondary waste and its objectives are to utilize hyper-accumulating plants to extract, stabilize, degrade, and filter the radionuclides. The review highlights plant mechanisms for up-taking radionuclides and influences of different environmental factors involved in the process, while considering its long-term effects.
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Affiliation(s)
- B S Manisha Singh
- Environment and Sustainability Department, CSIR-IMMT, Bhubaneshwar, 751013, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Human Resource Development Centre, (CSIR-HRDC) Campus, Ghaziabad, Uttar Pradesh, 201002, India
| | - Nabin Kumar Dhal
- Environment and Sustainability Department, CSIR-IMMT, Bhubaneshwar, 751013, India.
| | - Manish Kumar
- Environment and Sustainability Department, CSIR-IMMT, Bhubaneshwar, 751013, India
| | | | | | - Nirad Chandra Rout
- Environment and Sustainability Department, CSIR-IMMT, Bhubaneshwar, 751013, India
| | - Monalisha Nayak
- Atomic Energy Regulatory Board, Niyamak Bhavan, Mumbai, Anushakti nagar, 400094, India
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3
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Cardini A, Pellegrino E, Declerck S, Calonne-Salmon M, Mazzolai B, Ercoli L. Direct transfer of zinc between plants is channelled by common mycorrhizal network of arbuscular mycorrhizal fungi and evidenced by changes in expression of zinc transporter genes in fungus and plant. Environ Microbiol 2021; 23:5883-5900. [PMID: 33913577 PMCID: PMC8597171 DOI: 10.1111/1462-2920.15542] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 04/20/2021] [Accepted: 04/24/2021] [Indexed: 11/28/2022]
Abstract
The role that common mycorrhizal networks (CMNs) play in plant-to-plant transfer of zinc (Zn) has not yet been investigated, despite the proved functions of arbuscular mycorrhizal fungi (AMF) in crop Zn acquisition. Here, two autotrophic Medicago truncatula plants were linked by a CMN formed by Rhizophagus irregularis. Plants were grown in vitro in physically separated compartments (Donor-C and Receiver-C) and their connection ensured only by CMN. A symbiosis-defective mutant of M. truncatula was used as control in Receiver-C. Plants in both compartments were grown on Zn-free medium, and only the leaves of the donor plants were Zn fertilized. A direct transfer of Zn was demonstrated from donor leaves to receiver shoots mediated by CMN. Direct transfer of Zn was supported by changes in the expression of fungal genes, RiZRT1 and RiZnT1, and plant gene MtZIP2 in roots and MtNAS1 in roots and shoots of the receiver plants. Moreover, Zn transfer was supported by the change in expression of MtZIP14 gene in AM fungal colonized roots. This work is the first evidence of a direct Zn transfer from a donor to a receiver plant via CMN, and of a triggering of transcriptional regulation of fungal-plant genes involved in Zn transport-related processes.
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Affiliation(s)
- Alessio Cardini
- Institute of Life Sciences, Sant'Anna School of Advanced Studies, Piazza Martiri della Libertà 33, Pisa, 56127, Italy
| | - Elisa Pellegrino
- Institute of Life Sciences, Sant'Anna School of Advanced Studies, Piazza Martiri della Libertà 33, Pisa, 56127, Italy
| | - Stéphane Declerck
- Université catholique de Louvain, Earth and Life Institute, Applied Microbiology, Mycology, Croix du Sud 2, Box L7.05.06, Louvain-la-Neuve, 1348, Belgium
| | - Maryline Calonne-Salmon
- Université catholique de Louvain, Earth and Life Institute, Applied Microbiology, Mycology, Croix du Sud 2, Box L7.05.06, Louvain-la-Neuve, 1348, Belgium
| | - Barbara Mazzolai
- Center for Micro-BioRobotics, Istituto Italiano di Tecnologia, Viale Rinaldo Piaggio 34, 56025 Pontedera, Pisa, Italy
| | - Laura Ercoli
- Institute of Life Sciences, Sant'Anna School of Advanced Studies, Piazza Martiri della Libertà 33, Pisa, 56127, Italy
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4
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Liu J, Liu X, Zhang Q, Li S, Sun Y, Lu W, Ma C. Response of alfalfa growth to arbuscular mycorrhizal fungi and phosphate-solubilizing bacteria under different phosphorus application levels. AMB Express 2020; 10:200. [PMID: 33141419 PMCID: PMC7609620 DOI: 10.1186/s13568-020-01137-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 10/21/2020] [Indexed: 12/26/2022] Open
Abstract
Alfalfa (Medicago sativa L.) is an important forage legume in farming and animal husbandry systems. This study assessed the effects of arbuscular mycorrhizal fungi (AMF) and phosphate-solubilizing bacteria (PSB) on alfalfa growth under different phosphorus application levels. In this experiment, a complete randomized block design was used. The following four bacterial applications were used: inoculation of Funneliformis mosseae (Fm), inoculation of Bacillus megaterium (Bm), inoculation of mixed species (Fm × Bm) and noninoculation treatment (CK). Phosphorus (P) treatment was applied at the following four levels: 0 mg kg−1 (P0), 50 mg kg−1 (P1), 100 mg kg−1 (P2) and 150 mg P kg−1 (P3). The results showed that with the increase in phosphorus application, each index increased first and then decreased. The J2 treatment was significantly greater than the J0 treatment (P < 0.05) under the same bacterial treatment. In each cropping period the difference in each index to alfalfa was extremely significant under J, P treatment and J × P interactive treatment (P < 0.01). The indexes were compared by membership function. The priority order was as follows: J3P2 > J1P2 > J3P1 treatment. Therefore, when phosphorus was applied at 100 mg kg−1, the mixed inoculation of Fm × Bm was optimal, benefitting mycorrhiza growth and the production performance of alfalfa.
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Salbu B, Teien HC, Lind OC, Tollefsen KE. Why is the multiple stressor concept of relevance to radioecology? Int J Radiat Biol 2019; 95:1015-1024. [DOI: 10.1080/09553002.2019.1605463] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- B. Salbu
- Faculty of Environmental Sciences and Natural Resource Management (MINA), Norwegian University of Life Sciences (NMBU), Ås, Norway
- CERAD Centre for Environmental Radioactivity, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - H. C. Teien
- Faculty of Environmental Sciences and Natural Resource Management (MINA), Norwegian University of Life Sciences (NMBU), Ås, Norway
- CERAD Centre for Environmental Radioactivity, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - O. C. Lind
- Faculty of Environmental Sciences and Natural Resource Management (MINA), Norwegian University of Life Sciences (NMBU), Ås, Norway
- CERAD Centre for Environmental Radioactivity, Norwegian University of Life Sciences (NMBU), Ås, Norway
| | - K. E. Tollefsen
- Faculty of Environmental Sciences and Natural Resource Management (MINA), Norwegian University of Life Sciences (NMBU), Ås, Norway
- CERAD Centre for Environmental Radioactivity, Norwegian University of Life Sciences (NMBU), Ås, Norway
- Section of Ecotoxicology and Risk Assessment, Norwegian Institute of Water Research (NIVA), Oslo, Norway
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Kang DJ, Tazoe H, Ishii Y, Isobe K, Higo M, Yamada M. Effect of Fertilizer with Low Levels of Potassium on Radiocesium-137 Decontamination. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s12892-018-0054-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Zhang L, Jiang C, Zhou J, Declerck S, Tian C, Feng G. Increasing phosphorus concentration in the extraradical hyphae of Rhizophagus irregularis DAOM 197198 leads to a concomitant increase in metal minerals. MYCORRHIZA 2016; 26:909-918. [PMID: 27468824 DOI: 10.1007/s00572-016-0722-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 07/11/2016] [Indexed: 05/11/2023]
Abstract
Plants associated with arbuscular mycorrhizal fungi (AMF) acquire phosphorus via roots and extraradical hyphae. How soil P level affects P accumulation within hyphae and how P in hyphae influences the accumulation of metal minerals remains little explored. A bi-compartmented in vitro cultivation system separating a root compartment (RC), containing a Ri T-DNA transformed carrot root associated to the AMF Rhizophagus irregularis DAOM 197198, from a hyphal compartment (HC), containing only the extraradical hyphae, was used. The HC contained a liquid growth medium (i.e., the modified Strullu-Romand medium containing P in the form of KH2PO4) without (0 μM) or adjusted to 35, 100, and 700 μM of KH2PO4. The accumulation of P and metal minerals (Ca, Mg, K, Na, Fe, Cu, Mn) within extraradical hyphae and AMF-colonized roots, and the expression of the phosphate transporter gene GintPT were assessed. The expression of GintPT in the extraradical hyphae did not differ in absence of KH2PO4 or in presence of 35 and 100 μM KH2PO4 in the HC but was markedly reduced in presence of 700 μM KH2PO4. Hyphal P concentration was significantly lowest in absence of KH2PO4, intermediate at 35 and 100 μM KH2PO4 and significantly highest in presence of 700 μM KH2PO4 in the HC. The concentrations of K, Mg, and Na were positively associated with the concentration of P in the extraradical hyphae developing in the HC. Similarly, P concentration in extraradical hyphae in the HC was related to P concentration in the growth medium and influenced the concentration of K, Mg, and Na. The accumulation of the metal mineral K, Mg, and Na in the extraradical hyphae developing in the HC was possibly related to their function in neutralizing the negative charges of PolyP accumulated in the hyphae.
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Affiliation(s)
- Lin Zhang
- College of Resources and Environmental Sciences; Research Center for Resources, the Environment and Food Safety, China Agricultural University, Beijing, 100193, China
| | - Caiyun Jiang
- College of Resources and Environmental Sciences; Research Center for Resources, the Environment and Food Safety, China Agricultural University, Beijing, 100193, China
| | - Jiachao Zhou
- College of Resources and Environmental Sciences; Research Center for Resources, the Environment and Food Safety, China Agricultural University, Beijing, 100193, China
| | - Stéphane Declerck
- Université Catholique de Louvain, Earth and Life Institute, Applied microbiology, Mycology, Croix du sud 2, bte L7.05.06, B-1348, Louvain-la-Neuve, Belgium
| | - Changyan Tian
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830011, China
| | - Gu Feng
- College of Resources and Environmental Sciences; Research Center for Resources, the Environment and Food Safety, China Agricultural University, Beijing, 100193, China.
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Kothamasi D, Wannijn J, van Hees M, Nauts R, van Gompel A, Vanhoudt N, Cranenbrouck S, Declerck S, Vandenhove H. Rhizophagus irregularis MUCL 41833 can colonize and improve P uptake of Plantago lanceolata after exposure to ionizing gamma radiation in root organ culture. MYCORRHIZA 2016; 26:257-262. [PMID: 26467250 DOI: 10.1007/s00572-015-0664-1] [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: 06/10/2015] [Accepted: 10/04/2015] [Indexed: 06/05/2023]
Abstract
Long-lived radionuclides such as (90)Sr and (137)Cs can be naturally or accidentally deposited in the upper soil layers where they emit β/γ radiation. Previous studies have shown that arbuscular mycorrhizal fungi (AMF) can accumulate and transfer radionuclides from soil to plant, but there have been no studies on the direct impact of ionizing radiation on AMF. In this study, root organ cultures of the AMF Rhizophagus irregularis MUCL 41833 were exposed to 15.37, 30.35, and 113.03 Gy gamma radiation from a (137)Cs source. Exposed spores were subsequently inoculated to Plantago lanceolata seedlings in pots, and root colonization and P uptake evaluated. P. lanceolata seedlings inoculated with non-irradiated AMF spores or with spores irradiated with up to 30.35 Gy gamma radiation had similar levels of root colonization. Spores irradiated with 113.03 Gy gamma radiation failed to colonize P. lanceolata roots. P content of plants inoculated with non-irradiated spores or of plants inoculated with spores irradiated with up to 30.35 Gy gamma radiation was higher than in non-mycorrhizal plants or plants inoculated with spores irradiated with 113.03 Gy gamma radiation. These results demonstrate that spores of R. irregularis MUCL 41833 are tolerant to chronic ionizing radiation at high doses.
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Affiliation(s)
- David Kothamasi
- Biosphere Impact Studies Unit, Belgian Nuclear Research Center (SCK•CEN), Boeretang 200, 2400, Mol, Belgium.
- Laboratory of Soil Biology and Microbial Ecology, Department of Environmental Studies, University of Delhi, Delhi, 110 007, India.
| | - Jean Wannijn
- Biosphere Impact Studies Unit, Belgian Nuclear Research Center (SCK•CEN), Boeretang 200, 2400, Mol, Belgium
| | - May van Hees
- Biosphere Impact Studies Unit, Belgian Nuclear Research Center (SCK•CEN), Boeretang 200, 2400, Mol, Belgium
| | - Robin Nauts
- Biosphere Impact Studies Unit, Belgian Nuclear Research Center (SCK•CEN), Boeretang 200, 2400, Mol, Belgium
| | - Axel van Gompel
- Biosphere Impact Studies Unit, Belgian Nuclear Research Center (SCK•CEN), Boeretang 200, 2400, Mol, Belgium
| | - Nathalie Vanhoudt
- Biosphere Impact Studies Unit, Belgian Nuclear Research Center (SCK•CEN), Boeretang 200, 2400, Mol, Belgium
| | - Sylvie Cranenbrouck
- Earth and Life Institute, Applied Microbiology, Mycology, Mycothèque de l'Université catholique de Louvain (MUCL), Université catholique de Louvain, Croix du Sud 2, bte L7.05.06, B-1348, Louvain-la-Neuve, Belgium
| | - Stéphane Declerck
- Earth and Life Institute, Applied Microbiology, Mycology, Université catholique de Louvain, Croix du Sud 2, bte L7.05.06, B-1348, Louvain-la-Neuve, Belgium
| | - Hildegarde Vandenhove
- Biosphere Impact Studies Unit, Belgian Nuclear Research Center (SCK•CEN), Boeretang 200, 2400, Mol, Belgium
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Ashraf MA, Khan AM, Ahmad M, Akib S, Balkhair KS, Bakar NKA. Release, deposition and elimination of radiocesium ((137)Cs) in the terrestrial environment. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2014; 36:1165-1190. [PMID: 24804829 DOI: 10.1007/s10653-014-9620-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 04/25/2014] [Indexed: 06/03/2023]
Abstract
Radionuclide contamination in terrestrial ecosystems has reached a dangerous level. The major artificial radionuclide present in the environment is (137)Cs, which is released as a result of weapon production related to atomic projects, accidental explosions of nuclear power plants and other sources, such as reactors, evaporation ponds, liquid storage tanks, and burial grounds. The release of potentially hazardous radionuclides (radiocesium) in recent years has provided the opportunity to conduct multidisciplinary studies on their fate and transport. Radiocesium's high fission yield and ease of detection made it a prime candidate for early radio-ecological investigations. The facility setting provides a diverse background for the improved understanding of various factors that contribute toward the fate and transfer of radionuclides in the terrestrial ecosystem. In this review, we summarize the significant environmental radiocesium transfer factors to determine the damaging effects of radiocesium on terrestrial ecosystem. It has been found that (137)Cs can trace the transport of other radionuclides that have a high affinity for binding to soil particles (silts and clays). Possible remedial methods are also discussed for contaminated terrestrial systems. This review will serve as a guideline for future studies of the fate and transport of (137)Cs in terrestrial environments in the wake of the Fukushima Nuclear Power Plant disaster in 2011.
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Affiliation(s)
- Muhammad Aqeel Ashraf
- Department of Geology, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia,
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Behie SW, Bidochka MJ. Nutrient transfer in plant-fungal symbioses. TRENDS IN PLANT SCIENCE 2014; 19:734-740. [PMID: 25022353 DOI: 10.1016/j.tplants.2014.06.007] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 05/26/2014] [Accepted: 06/05/2014] [Indexed: 06/03/2023]
Abstract
Almost all plant species form symbioses with soil fungi, and nutrient transfer to plants is largely mediated through this partnership. Studies of fungal nutrient transfer to plants have largely focused on the transfer of limiting soil nutrients, such as nitrogen and phosphorous, by mycorrhizal fungi. However, certain fungal endophytes, such as Metarhizium and Beauveria, are also able to transfer nitrogen to their plant hosts. Here, we review recent studies that have identified genes and their encoded transporters involved in the movement of nitrogen, phosphorous, and nonlimiting soil nutrients between symbionts. These recent advances in our understanding could lead to applications in agricultural and horticultural settings, and to the development of model fungal systems that could further elucidate the role of fungi in these symbioses.
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Affiliation(s)
- Scott W Behie
- Department of Biological Sciences, Brock University, St Catharines, ON, L2S 3A1, Canada
| | - Michael J Bidochka
- Department of Biological Sciences, Brock University, St Catharines, ON, L2S 3A1, Canada.
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11
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Ghaley BB, Porter JR, Sandhu HS. Soil-based ecosystem services: a synthesis of nutrient cycling and carbon sequestration assessment methods. INTERNATIONAL JOURNAL OF BIODIVERSITY SCIENCE, ECOSYSTEM SERVICES & MANAGEMENT 2014. [DOI: 10.1080/21513732.2014.926990] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
- Bhim B. Ghaley
- Faculty of Science, Department of Plant and Environmental Sciences, University of Copenhagen, Højbakkegård Allé 30, 2630 Taastrup, Denmark
- Copenhagen Plant Science Centre, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - John R. Porter
- Faculty of Science, Department of Plant and Environmental Sciences, University of Copenhagen, Højbakkegård Allé 30, 2630 Taastrup, Denmark
| | - Harpinder S. Sandhu
- School of the Environment, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia
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12
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Garcia K, Zimmermann SD. The role of mycorrhizal associations in plant potassium nutrition. FRONTIERS IN PLANT SCIENCE 2014; 5:337. [PMID: 25101097 PMCID: PMC4101882 DOI: 10.3389/fpls.2014.00337] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 06/25/2014] [Indexed: 05/05/2023]
Abstract
Potassium (K(+)) is one of the most abundant elements of soil composition but it's very low availability limits plant growth and productivity of ecosystems. Because this cation participates in many biological processes, its constitutive uptake from soil solution is crucial for the plant cell machinery. Thus, the understanding of strategies responsible of K(+) nutrition is a major issue in plant science. Mycorrhizal associations occurring between roots and hyphae of underground fungi improve hydro-mineral nutrition of the majority of terrestrial plants. The contribution of this mutualistic symbiosis to the enhancement of plant K(+) nutrition is not well understood and poorly studied so far. This mini-review examines the current knowledge about the impact of both arbuscular mycorrhizal and ectomycorrhizal symbioses on the transfer of K(+) from the soil to the plants. A model summarizing plant and fungal transport systems identified and hypothetically involved in K(+) transport is proposed. In addition, some data related to benefits for plants provided by the improvement of K(+) nutrition thanks to mycorrhizal symbioses are presented.
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Affiliation(s)
| | - Sabine D. Zimmermann
- Biochimie et Physiologie Moléculaire des Plantes, UMR 5004 CNRS/INRA/SupAgro/UM2Montpellier, France
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Vinichuk M, Mårtensson A, Rosén K. Inoculation with arbuscular mycorrhizae does not improve 137Cs uptake in crops grown in the Chernobyl region. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2013; 126:14-19. [PMID: 23933082 DOI: 10.1016/j.jenvrad.2013.07.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 07/02/2013] [Accepted: 07/02/2013] [Indexed: 06/02/2023]
Abstract
Methods for cleaning up radioactive contaminated soils are urgently needed. In this study we investigated whether the use of arbuscular mycorrhizal (AM) fungi can improve (137)Cs uptake by crops. Barley, cucumber, perennial ryegrass, and sunflower were inoculated with AM fungi and grown in low-level radionuclide contaminated soils in a field experiment 70 km southwest of Chernobyl, Ukraine, during two successive years (2009-2010). Roots of barley, cucumber and sunflower plants were slightly or moderately infected with AM fungus and root infection frequency was negatively or non-correlated with (137)Cs uptake by plants. Roots of ryegrass were moderately infected with AM fungus and infection frequency was moderately correlated with (137)Cs uptake by ryegrass. The application of AM fungi to soil in situ did not enhance radionuclide plant uptake or biomass. The responsiveness of host plants and AM fungus combination to (137)Cs uptake varied depending on the soil, although mycorrhization of soil in the field was conditional and did not facilitate the uptake of radiocesium. The total amount of (137)Cs uptake by plants growing on inoculated soil was equal to amounts in plant cultivated on non-inoculated soil. Thus, the use of AM fungi in situ for bioremediation of soil contaminated with a low concentration of (137)Cs could not be recommended.
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Affiliation(s)
- M Vinichuk
- Department of Soil and Environment, Swedish University of Agricultural Sciences, P.O. Box 7014, SE-750 07 Uppsala, Sweden; Department of Ecology, Zhytomyr State Technological University, 103 Chernyakhovsky Str., 10005 Zhytomyr, Ukraine.
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14
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Vinichuk M, Mårtensson A, Ericsson T, Rosén K. Effect of arbuscular mycorrhizal (AM) fungi on 137Cs uptake by plants grown on different soils. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2013; 115:151-156. [PMID: 22939950 DOI: 10.1016/j.jenvrad.2012.08.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 07/13/2012] [Accepted: 08/04/2012] [Indexed: 06/01/2023]
Abstract
The potential use of mycorrhiza as a bioremediation agent for soils contaminated by radiocesium was evaluated in a greenhouse experiment. The uptake of (137)Cs by cucumber, perennial ryegrass, and sunflower after inoculation with a commercial arbuscular mycorrhizal (AM) product in soils contaminated with (137)Cs was investigated, with non-mycorrhizal quinoa included as a "reference" plant. The effect of cucumber and ryegrass inoculation with AM fungi on (137)Cs uptake was inconsistent. The effect of AM fungi was most pronounced in sunflower: both plant biomass and (137)Cs uptake increased on loamy sand and loamy soils. The total (137)Cs activity accumulated within AM host sunflower on loamy sand and loamy soils was 2.4 and 3.2-fold higher than in non-inoculated plants. Although the enhanced uptake of (137)Cs by quinoa plants on loamy soil inoculated by the AM fungi was observed, the infection of the fungi to the plants was not confirmed.
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Affiliation(s)
- M Vinichuk
- Department of Soil and Environment, Swedish University of Agricultural Sciences, P.O. Box 7014, SE-750 07 Uppsala, Sweden.
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15
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Sreenivasa Chari M, Manjaiah KM, Sachdev P, Sachdev MS. 134Cs transfer factors to green gram and soybean as influenced by waste mica. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2012; 104:46-54. [PMID: 22115435 DOI: 10.1016/j.jenvrad.2011.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2010] [Revised: 08/05/2011] [Accepted: 08/11/2011] [Indexed: 05/31/2023]
Abstract
Greenhouse pot culture experiment was carried out to study the (134)Cs transfer factors from soils to green gram and soybean as influenced by waste mica application (@ 0, 10, 20, 40 g mica kg(-1) soil) and compared with muriate of potash (MOP) application (0.17 g kg(-1) soil). For the study, the soils were contaminated with (134)Cs radionuclide @ 37 kBq kg(-1) soil. The shoot biomass and K uptake by crops were significantly improved with waste mica application (@ 40 g kg(-1) soil). Compared to control, waste mica and MOP application significantly improved the yield, K content in plant and its uptake. Amongst the soils, crops grown in vertisol recorded higher shoot biomass compared to inceptisol and ultisol. Irrespective of the treatments, higher (134)Cs transfer factors were seen in ultisol (0.30) as compared to inceptisol (0.16) and vertisol (0.13). It was observed that higher the K concentration in soil and plant, lowered (134)Cs transfer to green gram and soybean. The study recommended that waste mica @ 20 g kg(-1) would be useful for checking the (134)Cs transfer factors from soils to green gram and soybean.
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Affiliation(s)
- M Sreenivasa Chari
- Division of Soil Science and Agricultural Chemistry, Indian Agricultural Research Institute, New Delhi 110012, India
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Vinichuk M, Rosén K, Johanson KJ, Dahlberg A. Correlations between potassium, rubidium and cesium ((133)Cs and (137)Cs) in sporocarps of Suillus variegatus in a Swedish boreal forest. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2011; 102:386-392. [PMID: 21388727 DOI: 10.1016/j.jenvrad.2011.02.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Revised: 02/01/2011] [Accepted: 02/13/2011] [Indexed: 05/30/2023]
Abstract
An analysis of sporocarps of ectomycorrhizal fungi Suillus variegatus assessed whether cesium ((133)Cs and (137)Cs) uptake was correlated with potassium (K) or rubidium (Rb) uptake. The question was whether intraspecific correlations of Rb, K and (133)Cs mass concentrations with (137)Cs activity concentrations in sporocarps were higher within, rather than among, different fungal species, and if genotypic origin of sporocarps within a population affected uptake and correlation. Sporocarps (n = 51) from a Swedish forest population affected by the fallout after the Chernobyl accident were studied. The concentrations were 31.9 ± 6.79 g kg(-1) for K (mean ± SD, dwt), 0.40 ± 0.09 g kg(-1) for Rb, 8.7 ± 4.36 mg kg(-1) for (133)Cs and 63.7 ± 24.2 kBq kg(-1) for (137)Cs. The mass concentrations of (133)Cs correlated with (137)Cs activity concentrations (r = 0.61). There was correlation between both (133)Cs concentrations (r = 0.75) and (137)Cs activity concentrations (r = 0.44) and Rb, but the (137)Cs/(133)Cs isotopic ratio negatively correlated with Rb concentration. Concentrations of K and Rb were weakly correlated (r = 0.51). The (133)Cs mass concentrations, (137)Cs activity concentrations and (137)Cs/(133)Cs isotopic ratios did not correlate with K concentrations. No differences between, within or, among genotypes in S. variegatus were found. This suggested the relationships between K, Rb, (133)Cs and (137)Cs in sporocarps of S. variegatus is similar to other fungal species.
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Affiliation(s)
- M Vinichuk
- Department of Soil and Environment, Swedish University of Agricultural Sciences, P.O. Box 7014, SE-750 07 Uppsala, Sweden.
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Gyuricza V, Thiry Y, Wannijn J, Declerck S, Dupré de Boulois H. Radiocesium transfer between Medicago truncatula plants via a common mycorrhizal network. Environ Microbiol 2010; 12:2180-9. [PMID: 21966912 DOI: 10.1111/j.1462-2920.2009.02118.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Common mycorrhizal networks of arbuscular mycorrhizal fungi have been reported to transfer cesium between plants. However, a direct hyphae-mediated transfer (via cytoplasm/protoplasm) cannot be distinguished from an indirect transfer. Indeed, cesium released by the roots of the donor plant can be taken up by the receiver plant or fungal hyphae. In the present study, Medicago truncatula plants were connected by a common mycorrhizal network and Prussian Blue (ammonium-ferric-hexacyano ferrate) was added in the growth medium to adsorb the released radiocesium. A direct transfer of radiocesium to roots and shoots of the receiver plant was clearly demonstrated for the first time. Even though this transfer was quantitatively low, it suggested that shared mycorrhizal networks could contribute to the redistribution of this radionuclide in the environment, which otherwise would be restricted both in time and space. This finding may also help to understand the behaviour of its chemical analogue, potassium.
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Affiliation(s)
- Veronika Gyuricza
- Université catholique de Louvain, Unité de Microbiologie, Croix du Sud 3, 1348 Louvain-Neuve, Belgium
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Gyuricza V, Declerck S, Dupré de Boulois H. Arbuscular mycorrhizal fungi decrease radiocesium accumulation in Medicago truncatula. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2010; 101:591-6. [PMID: 20378216 DOI: 10.1016/j.jenvrad.2010.03.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Revised: 03/05/2010] [Accepted: 03/05/2010] [Indexed: 05/08/2023]
Abstract
The role of arbuscular mycorrhizal fungi (AMF) in plant radiocesium uptake and accumulation remains ambiguous. This is probably due to the presence of other soil microorganisms, the variability of soil characteristics and plant nutritional status or the availability of its chemical analogue, potassium (K). Here, we used an in vitro culture system to study the impact of increased concentration of K on radiocesium accumulation in non K-starved mycorrhizal and non-mycorrhizal Medicago truncatula plants. In the presence of AMF radiocesium uptake decreased regardless of the concentration of K, and its translocation from root to shoot was also significantly lower. Potassium also reduced the accumulation of radiocesium in plants but to a lesser extent than mycorrhization, and without any effect on translocation. These results suggest that AMF in combination with K can play a key role in reducing radiocesium uptake and its subsequent translocation to plant shoots, thereby representing good potential for improved phytomanagement of contaminated areas.
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Affiliation(s)
- Veronika Gyuricza
- Université catholique de Louvain, Earth and Life Institute (ELI), Laboratoire de Mycologie, 1348 Louvain-la-Neuve, Belgium
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