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Dhiman SK, Wu F, Galland P. Effects of weak static magnetic fields on the development of seedlings of Arabidopsis thaliana. PROTOPLASMA 2023; 260:767-786. [PMID: 36129584 DOI: 10.1007/s00709-022-01811-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 09/04/2022] [Indexed: 06/15/2023]
Abstract
To study magnetoreception of Arabidopsis thaliana, we analysed several developmental responses including cryptochrome-independent seed germination and the phytochrome- and cryptochrome-dependent hypocotyl elongation and photo-accumulation of anthocyanins and chlorophylls in weak static magnetic fields ranging from near null to 122 μT. A field of 50 μT accelerated seed germination by about 20 h relative to samples maintained in a near-null field. The double mutant, cry1cry2, lacking cryptochromes 1 and 2 displayed the same magnetic field-induced germination acceleration under blue light as the wild-type strain. Magnetic field-induced germination acceleration was masked in the presence of exogenous sucrose. Stimulus-response curves for hypocotyl elongation in a range between near-null to 122 μT indicated maxima near 9 and 60 μT for the wild-type strain as well as mutant cry1cry2. The photo-accumulation of anthocyanins and chlorophylls could be effectively modulated by magnetic fields in the presence of low-irradiance red and blue light, respectively. The findings indicate that Arabidopsis thaliana possesses light-independent mechanisms of magnetic field reception, which remain presently unidentified. Our results are in better agreement with predictions of the level crossing mechanism (LCM) of magnetoreception rather than those of the cryptochrome-associated radical-pair mechanism (RPM).
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Affiliation(s)
- Sunil Kumar Dhiman
- Kirori Mal College, Delhi University (North Campus), Delhi, 110007, India.
| | - Fan Wu
- Faculty of Biology, Philipps-University Marburg, Karl-von-Frisch-Str. 8, 35032, Marburg, Germany
| | - Paul Galland
- Faculty of Biology, Philipps-University Marburg, Karl-von-Frisch-Str. 8, 35032, Marburg, Germany
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Hassan S, Zeng XA, Khan MK, Farooq MA, Ali A, Kumari A, Mahwish, Rahaman A, Tufail T, Liaqat A. Recent developments in physical invigoration techniques to develop sprouts of edible seeds as functional foods. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2022. [DOI: 10.3389/fsufs.2022.997261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
For nutritional security, the availability of nutrients from food sources is a crucial factor. Global consumption of edible seeds including cereals, pulses, and legumes makes it a valuable source of nutrients particularly vitamins, minerals, and fiber. The presence of anti-nutritional factors forms complexes with nutrients, this complexity of the nutritional profile and the presence of anti-nutritional factors in edible seeds lead to reduced bioavailability of nutrients. By overcoming these issues, the germination process may help improve the nutrient profile and make them more bioavailable. Physical, physiological, and biological methods of seed invigoration can be used to reduce germination restraints, promote germination, enhance early crop development, to increase yields and nutrient levels through sprouting. During sprouting early start of metabolic activities through hydrolytic enzymes and resource mobilization causes a reduction in emergence time which leads to a better nutritional profile. The use of physical stimulating methods to increase the sprouting rate gives several advantages compared to conventional chemical-based methods. The advantages of physical seed treatments include environment-friendly, high germination rate, early seedling emergence, uniform seedling vigor, protection from chemical hazards, and improved yield. Different physical methods are available for seed invigoration viz. gamma irradiation, laser irradiation, microwaves, magnetic field, plasma, sound waves, and ultrasonic waves. Still, further research is needed to apply each technique to different seeds to identify the best physical method and factors for seed species along with different environmental parameters. The present review will describe the use and effects of physical processing techniques for seed invigoration.
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Zareei E, Zaare-Nahandi F, Oustan S, Hajilou J, Dadpour M. Insight into the role of magnetic nutrient solution on leaf morphology and biochemical attributes of Rasha grapevine (Vitis vinifera L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 185:290-301. [PMID: 35728421 DOI: 10.1016/j.plaphy.2022.06.017] [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: 02/14/2022] [Revised: 06/07/2022] [Accepted: 06/13/2022] [Indexed: 06/15/2023]
Abstract
The growth, development, and morphology of plants are extremely affected by many internal and external factors. In this regard, plant nourishing solutions take the most impact. Nowadays, the magnetization of nutrient solutions has been recommended as a promising eco-friendly approach for improving the growth and development of plants. This study was designed to explore the potential of magnetic nutrient solutions in altering morphometric characteristics as well as some physiological and nutritional attributes of Rasha grapevines. Magnetic treatments included magnetized nutrient solution (MagS) and pre-magnetized water completed with nutrients (MagW + S) at magnetic field intensities (0.1 and 0.2 T). According to the results, the most considerable changes in leaf shape and size as well as fresh and dry weights were observed in the plants treated with MagS at 0.2 T. Also, MagS 0.2 had a significant effect on increasing photosynthetic pigments, content of total soluble carbohydrates and protein, and activity of antioxidant enzymes. The content of TNK, K, P, Fe, and Cu was considerably amplified by MagW + S 0.2. Overall, the magnetic solutions had favorable influences on physiological, nutritional state, and leaf morphology of grapevines possibly through alerting water and solution properties, mineral solubility, and phytohormones signalling.
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Affiliation(s)
- Elnaz Zareei
- Department of Horticultural Sciences, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
| | - Fariborz Zaare-Nahandi
- Department of Horticultural Sciences, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
| | - Shahin Oustan
- Department of Soil Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Jafar Hajilou
- Department of Horticultural Sciences, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Mohammadreza Dadpour
- Department of Horticultural Sciences, Faculty of Agriculture, University of Tabriz, Tabriz, Iran.
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Effect of Magnetic and Electrical Fields on Yield, Shelf Life and Quality of Fruits. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12063183] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The presented article is a review of the literature reports on the influence of magnetic and electric fields on the growth, yield, ripening, and durability of fruits and their quality. The article shows the potential application of MF and EF in agricultural production. Magnetic and electrical fields increase the shelf life of the fruit and improve its quality. Alternating magnetic fields (AMF) with a value of 0.1–200 mT and a power frequency of 50 Hz or 60 Hz improve plant growth parameters. MF cause an increase in firmness, the rate of maturation, the content of beta-carotene, lycopene, and fructose, sugar concentration, and a reduction in acidity and respiration. The most common is a high-voltage electric field (HVEF) of 2–3.61 kV/cm. These fields extend the shelf life and improve the quality of fruit by decreasing respiration rate and ethylene production. The presented methods seem to be a promising way to increase the quantity and quality of crops in agricultural and fruit production. They are suitable for extending the shelf life of fruit and vegetables during their storage. Further research is needed to develop an accessible and uncomplicated way of applying MF and AEF in agricultural and fruit production.
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Bera K, Dutta P, Sadhukhan S. Seed priming with non-ionizing physical agents: plant responses and underlying physiological mechanisms. PLANT CELL REPORTS 2022; 41:53-73. [PMID: 34654949 DOI: 10.1007/s00299-021-02798-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 09/26/2021] [Indexed: 06/13/2023]
Abstract
Seed priming has long been explored as an effective value-added potential technique that results in improved germination, reduced seedling emergence time, shortened crop duration, increased stress tolerance and eventually increased higher grain production. However, the wider applicability of water or chemical-based conventional methods of seed priming is often restricted considering its deleterious effects on post-treatment storability or agricultural pollution due to the persistence of chemicals in plant systems or in the environment. In this context, the utilization of physical methods of seed priming for enhancing plant productivity has created a new horizon in the domain of seed technology. Being eco-friendly and cost-effective approaches, priming with extra-terrestrial or physical agents such as ionizing radiation such as X-rays and gamma rays and non-ionizing radiation such as ultrasonic wave, magnetic field, microwaves, and infrared light offers many advantages along with ensuring enhanced production over conventional methods. Ultraviolet radiations, bridging between ionizing and non-ionizing radiation, are important electromagnetic waves that would also be an effective priming agent. Non-ionizing radiation has certain biological advantages over ionizing radiation since it does not generate charged ions while passing through a subject, but has enough energy to cause biological effects. Extensive research works to study the effects of various non-ionizing physical priming methods are required before their wider exploitation in agriculture. With this background, this review aims to highlight the current understanding of non-ionizing physical methods of seed priming and its applicability to combat present-day challenges to achieve agro-ecological resilience.
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Affiliation(s)
- Kuntal Bera
- Department of Seed Science and Technology, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal, 736165, India
- Plant Molecular Biology Laboratory, Department of Botany, Raiganj University, Raiganj, Uttar Dinajpur, West Bengal, 733134, India
| | - Puspendu Dutta
- Department of Seed Science and Technology, Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal, 736165, India
| | - Sanjoy Sadhukhan
- Plant Molecular Biology Laboratory, Department of Botany, Raiganj University, Raiganj, Uttar Dinajpur, West Bengal, 733134, India.
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Causal theory on acceleration of seed germination in the vicinity of high voltage direct current transmission line. J Theor Biol 2021; 531:110899. [PMID: 34509491 DOI: 10.1016/j.jtbi.2021.110899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 08/17/2021] [Accepted: 09/06/2021] [Indexed: 11/20/2022]
Abstract
Seed germination is the primary stage of growth in a seed. A wealth of experiments exist in literature to support the existence of correlation between seed germination to the electric and magnetic fields. This becomes more important as researchers have suggested to develop technologies to build ecologically clean and environment-friendly solutions to agricultural practices. Although the literature supports the existence of seed germination acceleration, the lack of a definite causal theory has been observed by numerous researchers over decades. After considering all the existing experimental data, we have formulated a causal theory to explain the factors influencing seed germination around high voltage DC transmission lines. This work opens new avenues of research in this field.
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Sarraf M, Deamici KM, Taimourya H, Islam M, Kataria S, Raipuria RK, Abdi G, Brestic M. Effect of Magnetopriming on Photosynthetic Performance of Plants. Int J Mol Sci 2021; 22:ijms22179353. [PMID: 34502258 PMCID: PMC8431099 DOI: 10.3390/ijms22179353] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 11/16/2022] Open
Abstract
Magnetopriming has emerged as a promising seed-priming method, improving seed vigor, plant performance and productivity under both normal and stressed conditions. Various recent reports have demonstrated that improved photosynthesis can lead to higher biomass accumulation and overall crop yield. The major focus of the present review is magnetopriming-based, improved growth parameters, which ultimately favor increased photosynthetic performance. The plants originating from magnetoprimed seeds showed increased plant height, leaf area, fresh weight, thick midrib and minor veins. Similarly, chlorophyll and carotenoid contents, efficiency of PSII, quantum yield of electron transport, stomatal conductance, and activities of carbonic anhydrase (CA), Rubisco and PEP-carboxylase enzymes are enhanced with magnetopriming of the seeds. In addition, a higher fluorescence yield at the J-I-P phase in polyphasic chlorophyll a fluorescence (OJIP) transient curves was observed in plants originating from magnetoprimed seeds. Here, we have presented an overview of available studies supporting the magnetopriming-based improvement of various parameters determining the photosynthetic performance of crop plants, which consequently increases crop yield. Additionally, we suggest the need for more in-depth molecular analysis in the future to shed light upon hidden regulatory mechanisms involved in magnetopriming-based, improved photosynthetic performance.
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Affiliation(s)
- Mohammad Sarraf
- Department of Horticulture Science, Shiraz Branch, Islamic Azad University, Shiraz 71987-74731, Iran;
| | | | - Houda Taimourya
- Department of Horticulture, Horticol Complex of Agadir (CHA), Agronomy and Veterinary Institute Hassan II, Agadir 80000, Morocco;
| | - Monirul Islam
- Department of Sustainable Crop Production, Università Cattolica Del Sacro Cuore, Via Emilia Parmense 84, 29122 Piacenza, Italy;
| | - Sunita Kataria
- School of Biochemistry, Devi Ahilya Vishwavidyalaya, Khandwa Road, Indore 452001, India
- Correspondence: (S.K.); (M.B.)
| | | | - Gholamreza Abdi
- Department of Biotechnology, Persian Gulf Research Institute, Persian Gulf University, Bushehr 7516913817, Iran;
| | - Marian Brestic
- Department of Plant Physiology, Slovak University of Agriculture, Nitra, Tr. A. Hlinku 2, 949 01 Nitra, Slovakia
- Department of Botany and Plant Physiology, Faculty of Agrobiology, Food, and Natural Resources, Czech University of Life Sciences Prague, Kamycka 129, 165 00 Prague, Czech Republic
- Correspondence: (S.K.); (M.B.)
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Michalak I, Lewandowska S, Niemczyk K, Detyna J, Bujak H, Arik P, Bartniczak A. Germination of soybean seeds exposed to the static/alternating magnetic field and algal extract. Eng Life Sci 2019; 19:986-999. [PMID: 32624988 PMCID: PMC6999070 DOI: 10.1002/elsc.201900039] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/22/2019] [Accepted: 06/07/2019] [Indexed: 01/09/2023] Open
Abstract
In the present study, the effect of the static and alternating magnetic field applied individually and in combination with an algal extract on the germination of soybean seeds (Glycine max (L.) Merrill) and chlorophyll content was examined. The exposure time of seeds to the static magnetic field was 3, 6, and 12 min, whereas to the alternating magnetic field was 1, 2.5, and 5 min. The static magnetic field was obtained by means of a permanent magnets system while the alternating magnetic field by means of magnetic coils. Algal extract was produced from a freshwater macroalga-Cladophora glomerata using ultrasound homogenizer. In the germination tests, 10% extract was applied to the paper substrate before sowing. This is the first study that compares the germination of soybean seeds exposed to the static and alternating magnetic field. The best effect on the germination and chlorophyll content in seedlings had synergistic action of the static magnetic field on seeds for 3 min applied together with the extract and alternating magnetic field used for 2.5 min. It is not possible to clearly state which magnetic field better stimulated the germination of seeds, but the chlorophyll content in seedlings was much higher for alternating magnetic field.
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Affiliation(s)
- Izabela Michalak
- Department of Advanced Material TechnologiesFaculty of ChemistryWrocław University of Science and TechnologyWrocławPoland
| | - Sylwia Lewandowska
- Department of GeneticsPlant Breeding and Seed ProductionWrocław University of Environmental and Life SciencesWrocławPoland
| | - Katarzyna Niemczyk
- Department of MechanicsMaterials Science and EngineeringFaculty of Mechanical EngineeringWrocław University of Science and TechnologyWrocławPoland
| | - Jerzy Detyna
- Department of MechanicsMaterials Science and EngineeringFaculty of Mechanical EngineeringWrocław University of Science and TechnologyWrocławPoland
| | - Henryk Bujak
- Department of GeneticsPlant Breeding and Seed ProductionWrocław University of Environmental and Life SciencesWrocławPoland
- Plant Breeding and Acclimatization Institute (IHAR) ‐ National Research InstituteBłoniePoland
| | - Pelin Arik
- Department of Advanced Material TechnologiesFaculty of ChemistryWrocław University of Science and TechnologyWrocławPoland
| | - Annika Bartniczak
- Department of Advanced Material TechnologiesFaculty of ChemistryWrocław University of Science and TechnologyWrocławPoland
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Radhakrishnan R. Magnetic field regulates plant functions, growth and enhances tolerance against environmental stresses. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2019; 25:1107-1119. [PMID: 31564775 PMCID: PMC6745571 DOI: 10.1007/s12298-019-00699-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/04/2019] [Accepted: 08/01/2019] [Indexed: 05/20/2023]
Abstract
Global climatic fluctuations and the increasing population have been responsible for the decline in the crop productivity. The chemical fertilizers, pesticides, and suitable genetic resources are commonly used for improving the crop yield. Magnetic field (MF) therapy for plants and animals has been found to be an effective and emerging tool to control diseases and increase tolerance against the adverse environment. Very limited studies have been attempted to determine the role of MF on plant tolerance against various stress conditions. This review aims to highlight the mitigating effect of MF on plants against abiotic and biotic stresses. MF interacts with seeds and plants and accelerates metabolism, which leads to an improved germination. The primary and secondary metabolites, enzyme activities, uptake of nutrient and water are reprogrammed to stimulate the plant growth and yield under favorable conditions. During adverse conditions of abiotic stress such as drought, salt, heavy metal contamination in soil, MF mitigates the stress effects by increasing antioxidants and reducing oxidative stress in plants. The stunted plant growth under different light and temperature conditions can be overcome by the exposure to MF. An MF treatment lowers the disease index of plants due to the modulation of calcium signaling, and proline and polyamines pathways. This review explores the basic and recent information about the impact of MF on plant survival against the adverse environment and emphasizes that thorough research is required to elucidate the mechanism of its interaction to protect the plants from biotic and abiotic stresses.
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Affiliation(s)
- Ramalingam Radhakrishnan
- Department of Microbiology, Karpagam Academy of Higher Education, Coimbatore, Tamilnadu 641 021 India
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10
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Lewandowska S, Michalak I, Niemczyk K, Detyna J, Bujak H, Arik P. Influence of the Static Magnetic Field and Algal Extract on the Germination of Soybean Seeds. OPEN CHEM 2019. [DOI: 10.1515/chem-2019-0039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractThis study examines the effect of a separate static magnetic field (SMF) and algal extract and their synergistic effect on soybean seeds germination. To our knowledge, this is the first time these kinds of factors were used for the biostimulation of soybean seeds germination. Soybean – Glycine max (L.) Merrill variety ‘Merlin’ was used in the present study. The exposure of seeds to the magnetic field was applied for 3, 6 and 12 min. The algal extract, produced from a freshwater green macroalga – Cladophora glomerata using an ultrasonic homogenizer, was used directly to the paper substrate at a dose of 10%. The highest germination ability of soybean seeds was observed in a group, where the magnetic field (12 min.) was used together with 10% of algal extract. However, it was very low – only 21%, which may have resulted from the seed dormancy. Future experiments on soybean seeds are required to confirm the stimulation effect of the magnetic field (various induction values) and algal extract on seeds germination.
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Affiliation(s)
- Sylwia Lewandowska
- Department of Genetics, Plant Breeding and Seed Production, Wrocław University of Environmental and Life Sciences, Pl. Grunwaldzki 24A, 50-363Wrocław, Poland
| | - Izabela Michalak
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372Wrocław, Poland
| | - Katarzyna Niemczyk
- Department of Mechanics, Materials Science and Engineering, Faculty of Mechanical Engineering, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-370Wrocław, Poland
| | - Jerzy Detyna
- Department of Mechanics, Materials Science and Engineering, Faculty of Mechanical Engineering, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-370Wrocław, Poland
| | - Henryk Bujak
- Department of Genetics, Plant Breeding and Seed Production, Wrocław University of Environmental and Life Sciences, Pl. Grunwaldzki 24A, 50-363Wrocław, Poland
| | - Pelin Arik
- Department of Advanced Material Technologies, Faculty of Chemistry, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-372Wrocław, Poland
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Radhakrishnan R. Exposure of magnetic waves stimulates rapid germination of soybean seeds by enzymatic regulation in cotyledons and embryonic axis. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.101273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Two-Hour Magneto-Priming with Static Magnetic Fields Ranging from 65 ± 3 to 505 ± 8 mT Does Not Improve the Germination Percentage of Industrial Hemp Seed at a Sub-Optimal Germination Temperature. J 2018. [DOI: 10.3390/j1010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Industrial hemp is a non-psychoactive variety of Cannabis sativa L., i.e., it contains less than 0.3% tetrahydrocannabinols (THC). This crop is one of historical importance in the U.S. as manufacturers seek industrial hemp as a renewable and sustainable resource for a wide variety of consumer and industrial products. To help farmers succeed, agronomic research on industrial hemp is needed. In this trial, investigations were performed to determine whether magneto-priming, a form of seed priming that involves magnetic fields, effects the germination percentage of industrial hemp seed. Beneficial effects of magnetic fields on seedling growths and germination have been reported for many different plant species. Dry industrial hemp seed was exposed to static magnetic fields ranging from 65 ± 3 to 505 ± 8 mT for 2 h prior to seed germination. Germination was performed at 13.6 ± 0.7 °C, a temperature that is representative of the germination temperatures of industrial hemp in the U.S. state of Colorado. Magneto-priming of seed had no statistically significant effect on seed germination percentage.
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Bahadir A, Beyaz R, Yildiz M. Effect of magnetic field on in vitro seedling growth and shoot regeneration from cotyledon node explants of Lathyrus chrysanthus boiss. Bioelectromagnetics 2018; 39:547-555. [PMID: 30260490 DOI: 10.1002/bem.22139] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 07/16/2018] [Indexed: 11/11/2022]
Abstract
The stimulatory effects on germination of seeds and growth of plants of static magnetic field (MF) pre-treatments depending on MF intensity, exposure time periods, signal form, flux density, and source frequencies on plants are reported. Seed germination frequency is low due to dormancy in Lathyrus chrysanthus Boiss. from Fabaceae family, consisting of 187 taxa. Tissue culture protocol for this plant has already been optimized. This plant is also used as a model for developing alternative methods to overcome dormancy. This study was conducted to determine the effects of MF on in vitro seed germination, seedling growth, and shoot regeneration capacity of cotyledon node explants in Lathyrus chrysanthus Boiss. to obtain healthy seedlings in large quantities. The seeds of an ecotype (Diyarbakir) were subjected to 125 mT MF strength for different exposure time periods (0-untreated, 24, 48, and 72 h). Sterilized seeds were germinated on growth basal medium in Magenta vessels. Seed germination and seedling growth percentages were recorded after 7 and 14 days of culture initiation, whereas seedling and root lengths were noted 28 days after culture initiation. At the end of the culture, shoot regeneration percentage, shoot number per explant, highest shoot height per explant, and total shoot number per petri dish were recorded. According to the results, it could be concluded that MF treatment could clearly be used to improve germination by breaking dormancy not only in Lathyrus chrysanthus Boiss. but also other plant species. Bioelectromagnetics. 39:547-555, 2018.© 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Anzel Bahadir
- Faculty of Medicine, Department of Biophysics, Duzce University, Duzce, Turkey
| | - Ramazan Beyaz
- Faculty of Agriculture, Department of Soil Science and Plant Nutrition, Ahi Evran University, Kırşehir, Turkey
| | - Mustafa Yildiz
- Faculty of Agriculture, Department of Field Crops, Ankara University, Ankara, Turkey
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Ulgen C, Birinci Yıldırım A, Uçar Turker A. Effect of Magnetic Field Treatments on Seed Germination of Melissa officinalis L. INTERNATIONAL JOURNAL OF SECONDARY METABOLITE 2017. [DOI: 10.21448/ijsm.356283] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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15
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Influence of cold plasma on the enzymatic activity in germinating mung beans (Vigna radiate). Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2016.12.026] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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16
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Iqbal M, Haq ZU, Jamil Y, Nisar J. Pre-sowing seed magnetic field treatment influence on germination, seedling growth and enzymatic activities of melon ( Cucumis melo L.). BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2016. [DOI: 10.1016/j.bcab.2016.04.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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17
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da Silva JAT, Dobránszki J. Magnetic fields: how is plant growth and development impacted? PROTOPLASMA 2016; 253:231-48. [PMID: 25952081 DOI: 10.1007/s00709-015-0820-7] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 04/13/2015] [Indexed: 05/24/2023]
Abstract
This review provides detailed insight on the effects of magnetic fields on germination, growth, development, and yield of plants focusing on ex vitro growth and development and discussing the possible physiological and biochemical responses. The MFs considered in this review range from the nanoTesla (nT) to geomagnetic levels, up to very strong MFs greater than 15 Tesla (T) and also super-weak MFs (near 0 T). The theoretical bases of the action of MFs on plant growth, which are complex, are not discussed here and thus far, there is limited mathematical background about the action of MFs on plant growth. MFs can positively influence the morphogenesis of several plants which allows them to be used in practical situations. MFs have thus far been shown to modify seed germination and affect seedling growth and development in a wide range of plants, including field, fodder, and industrial crops; cereals and pseudo-cereals; grasses; herbs and medicinal plants; horticultural crops (vegetables, fruits, ornamentals); trees; and model crops. This is important since MFs may constitute a non-residual and non-toxic stimulus. In addition to presenting and summarizing the effects of MFs on plant growth and development, we also provide possible physiological and biochemical explanations for these responses including stress-related responses of plants, explanations based on dia-, para-, and ferromagnetism, oriented movements of substances, and cellular and molecular changes.
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Affiliation(s)
| | - Judit Dobránszki
- Research Institute of Nyíregyháza, University of Debrecen, Nyíregyháza, P.O. Box 12, 4400, Hungary.
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Hozayn M, Abdallha MM, Abd EMAA, El Saady AA, Darwish MA, Hozayn M, Abdallha MM, Abd EMAA, El Saady AA, Darwish MA. Applications of magnetic technology in agriculture: A novel tool for improving crop productivity (1): Canola. ACTA ACUST UNITED AC 2016. [DOI: 10.5897/ajar2015.9382] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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19
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An improved process for high nutrition of germinated brown rice production: Low-pressure plasma. Food Chem 2016; 191:120-7. [DOI: 10.1016/j.foodchem.2015.01.083] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 12/29/2014] [Accepted: 01/18/2015] [Indexed: 11/18/2022]
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20
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Novel Magnetic Field System: Application to Micropropagation of Horticultural Plants. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.2478/v10133-010-0078-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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21
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Alikamanoğlu S, Yaycılı O, Atak Ç, Rzakoulieva A. Effect of Magnetic Field and Gamma Radiation onPaulowinia TomentosaTissue Culture. BIOTECHNOL BIOTEC EQ 2014. [DOI: 10.1080/13102818.2007.10817412] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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22
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Poinapen D, Brown DCW, Beeharry GK. Seed orientation and magnetic field strength have more influence on tomato seed performance than relative humidity and duration of exposure to non-uniform static magnetic fields. JOURNAL OF PLANT PHYSIOLOGY 2013; 170:1251-1258. [PMID: 23759543 DOI: 10.1016/j.jplph.2013.04.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Revised: 04/11/2013] [Accepted: 04/12/2013] [Indexed: 06/02/2023]
Abstract
Different factors (e.g., light, humidity, and temperature) including exposure to static magnetic fields (SMFs), referred here as critical factors, can significantly affect horticultural seed performance. However, the link between magnetic field parameters and other interdependent factors affecting seed viability is unclear. The importance of these critical factors affecting tomato (Solanum lycopersicum L.) var. MST/32 seed performance was assessed after performing several treatments based on a L9 (3(4)) (four factors at three levels) orthogonal array (OA) design. The variable factors in the design were magnetic flux density (R1=332.1±37.8mT; R2=108.7±26.9mT; and R3=50.6±10.5mT), exposure time (1, 2, and 24h), seed orientation (North polarity, South polarity, and control - no magnetic field), and relative humidity (RH) (7.0, 25.5, and 75.5%). After seed moisture content stabilisation at the different chosen RH, seeds were exposed in dark under laboratory conditions to several treatments based on the OA design before performance evaluation. Treatments not employing magnetic field exposure were used as controls. Results indicate that electrolyte leakage rate was reduced by a factor of 1.62 times during seed imbibition when non-uniform SMFs were employed. Higher germination (∼11.0%) was observed in magnetically-exposed seeds than in non-exposed ones, although seedlings emerging from SMF treatments did not show a consistent increase in biomass accumulation. The respective influence of the four critical factors tested on seed performance was ranked (in decreasing order) as seed orientation to external magnetic fields, magnetic field strength, RH, and exposure time. This study suggests a significant effect of non-uniform SMFs on seed performance with respect to RH, and more pronounced effects are observed during seed imbibition rather than during later developmental stages.
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Affiliation(s)
- Danny Poinapen
- Department of Biology, University of Western Ontario, London, Ontario, Canada.
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23
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Nagaraju M, Reddy KV, Reshma SR, Jareena S. Exposure of Greengram Seeds (Vigna radiate var. radiata) to Static Magnetic Fields: Effects on Germination and a-amylase Activity. ACTA ACUST UNITED AC 2012. [DOI: 10.3923/rjss.2012.106.114] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Cakmak T, Dumlupinar R, Erdal S. Acceleration of germination and early growth of wheat and bean seedlings grown under various magnetic field and osmotic conditions. Bioelectromagnetics 2010; 31:120-9. [PMID: 19681058 DOI: 10.1002/bem.20537] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Magnetic field (MF) can have different effects on plant metabolism depending on its application style, intensity, and environmental conditions. This study reports the effects of different intensities of static MF (4 or 7 mT) on seed germination and seedling growth of bean or wheat seeds in different media having 0, 2, 6, and 10 atmosphere (atm) osmotic pressure prepared with sucrose or salt. The germination percentages of the treated seeds were compared with untreated seeds germinated in different osmotic pressure during 7 days of incubation. The application of both MFs promoted the germination ratios of bean and wheat seeds, regardless of increasing osmotic pressure of sucrose or salt. Growth data measured on the 7th day showed that the treated plants grew faster than control. After 7 days of incubation, the mean length of treated seedlings was statistically higher than control plants in all the media. The greatest germination and growth rates in both plants were from the test groups exposed to 7 mT MF. Strikingly, effects of static MF on germination and growth increased positively with increasing osmotic pressure or salt stress compared to their respective controls. On the other hand, MF application caused an increase in dry biomass accumulation of root and shoots of both seedlings; however, this effect was found statistically important in all the conditions for wheat but not for bean, in general.
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Affiliation(s)
- Turgay Cakmak
- Department of Biology, Science Faculty, Atatürk University, Erzurum, Turkey.
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25
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Vashisth A, Nagarajan S. Effect on germination and early growth characteristics in sunflower (Helianthus annuus) seeds exposed to static magnetic field. JOURNAL OF PLANT PHYSIOLOGY 2010; 167:149-56. [PMID: 19783321 DOI: 10.1016/j.jplph.2009.08.011] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 08/12/2009] [Accepted: 08/12/2009] [Indexed: 05/20/2023]
Abstract
Seeds of sunflower (Helianthus annuus) were exposed in batches to static magnetic fields of strength from 0 to 250mT in steps of 50mT for 1-4h in steps of 1h. Treatment of sunflower seeds in these magnetic fields increased the speed of germination, seedling length and seedling dry weight under laboratory germination tests. Of the various treatments, 50 and 200mT for 2h yielded the peak performance. Exposure of seeds to magnetic fields improved seed coat membrane integrity and reduced the cellular leakage and electrical conductivity. Treated seeds planted in soil resulted in statistically higher seedling dry weight, root length, root surface area and root volume in 1-month-old seedlings. In germinating seeds, enzyme activities of alpha-amylase, dehydrogenase and protease were significantly higher in treated seeds in contrast to controls. The higher enzyme activity in magnetic-field-treated sunflower seeds could be triggering the fast germination and early vigor of seedlings.
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Affiliation(s)
- Ananta Vashisth
- Division of Agricultural Physics, Indian Agricultural Research Institute, New Delhi 110012, India.
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26
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Hunt RW, Zavalin A, Bhatnagar A, Chinnasamy S, Das KC. Electromagnetic biostimulation of living cultures for biotechnology, biofuel and bioenergy applications. Int J Mol Sci 2009; 10:4515-4558. [PMID: 20057958 PMCID: PMC2790121 DOI: 10.3390/ijms10104515] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2009] [Revised: 09/17/2009] [Accepted: 10/19/2009] [Indexed: 11/16/2022] Open
Abstract
The surge of interest in bioenergy has been marked with increasing efforts in research and development to identify new sources of biomass and to incorporate cutting-edge biotechnology to improve efficiency and increase yields. It is evident that various microorganisms will play an integral role in the development of this newly emerging industry, such as yeast for ethanol and Escherichia coli for fine chemical fermentation. However, it appears that microalgae have become the most promising prospect for biomass production due to their ability to grow fast, produce large quantities of lipids, carbohydrates and proteins, thrive in poor quality waters, sequester and recycle carbon dioxide from industrial flue gases and remove pollutants from industrial, agricultural and municipal wastewaters. In an attempt to better understand and manipulate microorganisms for optimum production capacity, many researchers have investigated alternative methods for stimulating their growth and metabolic behavior. One such novel approach is the use of electromagnetic fields for the stimulation of growth and metabolic cascades and controlling biochemical pathways. An effort has been made in this review to consolidate the information on the current status of biostimulation research to enhance microbial growth and metabolism using electromagnetic fields. It summarizes information on the biostimulatory effects on growth and other biological processes to obtain insight regarding factors and dosages that lead to the stimulation and also what kind of processes have been reportedly affected. Diverse mechanistic theories and explanations for biological effects of electromagnetic fields on intra and extracellular environment have been discussed. The foundations of biophysical interactions such as bioelectromagnetic and biophotonic communication and organization within living systems are expounded with special consideration for spatiotemporal aspects of electromagnetic topology, leading to the potential of multipolar electromagnetic systems. The future direction for the use of biostimulation using bioelectromagnetic, biophotonic and electrochemical methods have been proposed for biotechnology industries in general with emphasis on an holistic biofuel system encompassing production of algal biomass, its processing and conversion to biofuel.
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Affiliation(s)
- Ryan W. Hunt
- Department of Biological and Agricultural Engineering, The University of Georgia, Athens, GA 30602, USA; E-Mails:
(A.B.);
(S.C.);
(K.C.D.)
- Author to whom correspondence should be addressed; E-Mail:
(R.W.H.); Tel.: +1-706-227-7147; Fax: +1-706-542-8806
| | - Andrey Zavalin
- Mass Spectrometry Research Center, Vanderbilt University Medical Center, Nashville, TN 37232, USA; E-Mail:
(A.Z.)
| | - Ashish Bhatnagar
- Department of Biological and Agricultural Engineering, The University of Georgia, Athens, GA 30602, USA; E-Mails:
(A.B.);
(S.C.);
(K.C.D.)
| | - Senthil Chinnasamy
- Department of Biological and Agricultural Engineering, The University of Georgia, Athens, GA 30602, USA; E-Mails:
(A.B.);
(S.C.);
(K.C.D.)
| | - Keshav C. Das
- Department of Biological and Agricultural Engineering, The University of Georgia, Athens, GA 30602, USA; E-Mails:
(A.B.);
(S.C.);
(K.C.D.)
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Leelapriya T, Dhilip KS, Sanker Narayan PV. Effect of Weak Sinusoidal Magnetic Field on Germination and Yield of Cotton (Gossypiumspp.). Electromagn Biol Med 2009. [DOI: 10.1081/jbc-120024621] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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28
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Flórez M, Carbonell MV, Martínez E. Early Sprouting and First Stages of Growth of Rice Seeds Exposed to a Magnetic Field. Electromagn Biol Med 2009. [DOI: 10.1081/lebm-200042316] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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29
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Kaddah N, Rizk S, Kaddah A, Salama K, Lotfy H. Study of Possible Genetic Factors Determining the Clinical Picture of Thalassemia Intermedia. JOURNAL OF MEDICAL SCIENCES 2009. [DOI: 10.3923/jms.2009.151.155] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Vashisth A, Nagarajan S. Exposure of seeds to static magnetic field enhances germination and early growth characteristics in chickpea (Cicer arietinum L.). Bioelectromagnetics 2008; 29:571-8. [DOI: 10.1002/bem.20426] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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De Souza A, Garcí D, Sueiro L, Gilart F, Porras E, Licea L. Pre-sowing magnetic treatments of tomato seeds increase the growth and yield of plants. Bioelectromagnetics 2006; 27:247-57. [PMID: 16511881 DOI: 10.1002/bem.20206] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The effects of pre-sowing magnetic treatments on growth and yield of tomato (cv Campbell-28) were investigated under field conditions. Tomato seeds were exposed to full-wave rectified sinusoidal non-uniform magnetic fields (MFs) induced by an electromagnet at 100 mT (rms) for 10 min and at 170 mT (rms) for 3 min. Non-treated seeds were considered as controls. Plants were grown in experimental plots (30.2 m(2)) and were cultivated according to standard agricultural practices. During the vegetative and generative growth stages, samples were collected at regular intervals for growth rate analyses, and the resistance of plants to geminivirus and early blight was evaluated. At physiological maturity, the plants were harvested from each plot and the yield and yield parameters were determined. In the vegetative stage, the treatments led to a significant increase in leaf area, leaf dry weight, and specific leaf area (SLA) per plant. Also, the leaf, stem, and root relative growth rates of plants derived from magnetically treated seeds were greater than those shown by the control plants. In the generative stage, leaf area per plant and relative growth rates of fruits from plants from magnetically exposed seeds were greater than those of the control plant fruits. At fruit maturity stage, all magnetic treatments increased significantly (P < .05) the mean fruit weight, the fruit yield per plant, the fruit yield per area, and the equatorial diameter of fruits in comparison with the controls. At the end of the experiment, total dry matter was significantly higher for plants from magnetically treated seeds than that of the controls. A significant delay in the appearance of first symptoms of geminivirus and early blight and a reduced infection rate of early blight were observed in the plants from exposed seeds to MFs. Pre-sowing magnetic treatments would enhance the growth and yield of tomato crop.
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Affiliation(s)
- A De Souza
- Laboratory of Non-Ionizing Radiation, Center for Environmental Research, Services and Technologies, Agricultural Research Institute Jorge Dimitrov, Granma, Cuba.
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Galland P, Pazur A. Magnetoreception in plants. JOURNAL OF PLANT RESEARCH 2005; 118:371-89. [PMID: 16283069 DOI: 10.1007/s10265-005-0246-y] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2005] [Accepted: 10/02/2005] [Indexed: 05/05/2023]
Abstract
This article reviews phenomena of magnetoreception in plants and provides a survey of the relevant literature over the past 80 years. Plants react in a multitude of ways to geomagnetic fields-strong continuous fields as well as alternating magnetic fields. In the past, physiological investigations were pursued in a somewhat unsystematic manner and no biological advantage of any magnetoresponse is immediately obvious. As a result, most studies remain largely on a phenomenological level and are in general characterised by a lack of mechanistic insight, despite the fact that physics provides several theories that serve as paradigms for magnetoreception. Beside ferrimagnetism, which is well proved for bacterial magnetotaxis and for some cases of animal navigation, two further mechanisms for magnetoreception are currently receiving major attention: (1) the "radical-pair mechanism" consisting of the modulation of singlet-triplet interconversion rates of a radical pair by weak magnetic fields, and (2) the "ion cyclotron resonance" mechanism. The latter mechanism centres around the fact that ions should circulate in a plane perpendicular to an external magnetic field with their Lamor frequencies, which can interfere with an alternating electromagnetic field. Both mechanisms provide a theoretical framework for future model-guided investigations in the realm of plant magnetoreception.
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Affiliation(s)
- Paul Galland
- Faculty of Biology, Philipps-Universität Marburg, 35032 Marburg, Germany.
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Sandu DD, Goiceanu IC, Ispas A, Creanga I, Miclaus S, Creanga DE. A preliminary study on ultra high frequency electromagnetic fields effect on black locust chlorophylls. ACTA BIOLOGICA HUNGARICA 2005; 56:109-17. [PMID: 15813219 DOI: 10.1556/abiol.56.2005.1-2.11] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Chlorophylls were quantitatively studied in the leaves of black locust (Robinia pseudoacacia L.) seedlings exposed to electromagnetic fields of high frequency. Exposure system was designed and built up to make possible simultaneous exposure of seedling lots (3 months old) to low power density electromagnetic fields corresponding to a frequency of 400 MHz. After three weeks of daily exposures (1, 2, 3 and 8 hours), chlorophyll levels were measured using adequate spectral device. Statistical analysis of experimental results was performed by means of t-test to identify significant modifications induced by electromagnetic treatment in exposed samples in comparison to the control. Chlorophyll-a as well as chlorophyll-b level was found to decrease except the exposure time of two hours, where a considerable enhancement was noticed. It was revealed that the ratio of the two main types of chlorophyll was decreasing logarithmically to the increase of daily exposure time.
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Affiliation(s)
- D D Sandu
- Faculty of Physics, "Al I Cuza" University, 6600 lasi
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Singh M, Garbyal RS, Singh KP, Singh UP. Effect of 50‐Hz‐Powerline‐Exposed Water on Hematological Parameters in Rats. Electromagn Biol Med 2003. [DOI: 10.1081/jbc-120020375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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35
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. SO, . GE. Evaluation of Chlorophyll Contents and Peroxidase Activities in Helianthus annuus Genotypes Exposed to Radiation and Magnetic Fields. ACTA ACUST UNITED AC 2002. [DOI: 10.3923/jas.2002.934.937] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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36
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Martinez E, Carbonell MV, Florez M. MAGNETIC BIOSTIMULATION OF INITIAL GROWTH STAGES OF WHEAT (TRITICUM AESTIVUM, L.). Electromagn Biol Med 2002. [DOI: 10.1081/jbc-120003110] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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