Effect of various microwave frequencies on the physiology of a cyanobacterium, Schizothrix mexicana

Asadi, Akram; Soltani, Nepton; Asadi, AliAkbar

doi:10.1007/s11738-012-1153-1

Cited by 4 publications

(2 citation statements)

References 28 publications

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“…Pirogova et al [112] tested the effect of low frequency microwave energy, in the range of 500-900 MHz and at various power levels (1, 0.1 and 0.01 μW) on the activity of l-lactate dehydrogenase in solution for 300 s. They found a 73% increase in the bioactivity of the studied enzyme in microwaveirradiated samples compared to nonirradiated samples. Asadi et al [113] tested the physiology of cyanobacterium (Schizothrix mexicana) against low power microwave modulation of various frequencies; they found that 9.685 GHz significantly increased growth metabolisms. Dreyfuss and Chipley [114] documented that metabolic enzyme activity of S. aureus increased after microwave irradiation.…”

Section: Enzyme Activity As a Function Of Microwave Soil Heatingmentioning

confidence: 99%

Microwave Weed and Soil Treatment in Rice Production

Khan¹,

Brodie²

2018

Rice Crop - Current Developments

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Herbicides resistance has challenged sustainable rice productivity. Consequently, interest in chemical-free weed management has increased to overcome this constraint. This chapter has demonstrated the effect of pre-sowing microwave soil heating as a new alternative to chemicals for confirmed herbicide resistant weeds of the Australian rice production system. Microwave can superheat weed plants, creating micro-steam explosions in the plant structures to kill weeds. This requires the least amount of energy to achieve weed control and can be likened to a 'knock down' herbicide treatment. Considerably, more microwave energy can be applied to the soil to achieve weed seed bank deactivation; however, there is growing evidence that this strategy also changes the soil biota and nutrient profile in favour of substantial increases in crop yield, when crops are planted into this microwave-treated soil. An energy application of approximately 400-500 J cm −2 gave approximately 70-80% reduction in weed establishment in three field trials conducted at two agro-ecological zones of the Australia. In addition, there was a 10 times higher nitrogen use efficiency, and a 37% higher water use efficiency was achieved through this aspect of the microwave technology. There is also evidence that the soil treatment strategy provides persistent effects, beyond a single season; therefore, the rice production is better than when using conventional weed control methods.

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Section: Enzyme Activity As a Function Of Microwave Soil Heatingmentioning

confidence: 99%

Microwave Weed and Soil Treatment in Rice Production

Khan¹,

Brodie²

2018

Rice Crop - Current Developments

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“…The reader may also refer to various commercial uses (see, for example, lgsonic.com/ultrasonic-algae-control/, Accessed date 7 July 2021). At relatively low frequencies and depending on the power density, microwave radiation affects the growth and metabolism of cyanobacteria [ 61 , 62 ]. Since the sensitivities of the vesicles differ between species, the ultrasonic frequency, radiation durations, and densities must be adopted accordingly.…”

Section: In-lake Treatmentsmentioning

confidence: 99%

Cyanobacterial Harmful Algal Blooms in Aquatic Ecosystems: A Comprehensive Outlook on Current and Emerging Mitigation and Control Approaches

Sukenik

2021

Microorganisms

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An intensification of toxic cyanobacteria blooms has occurred over the last three decades, severely affecting coastal and lake water quality in many parts of the world. Extensive research is being conducted in an attempt to gain a better understanding of the driving forces that alter the ecological balance in water bodies and of the biological role of the secondary metabolites, toxins included, produced by the cyanobacteria. In the long-term, such knowledge may help to develop the needed procedures to restore the phytoplankton community to the pre-toxic blooms era. In the short-term, the mission of the scientific community is to develop novel approaches to mitigate the blooms and thereby restore the ability of affected communities to enjoy coastal and lake waters. Here, we critically review some of the recently proposed, currently leading, and potentially emerging mitigation approaches in-lake novel methodologies and applications relevant to drinking-water treatment.

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Antioxidative responses of Nostoc ellipsosporum and Nostoc piscinale to salt stress

Rezayian

Faramarzi

2018

J Appl Phycol

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Effect of various microwave frequencies on the physiology of a cyanobacterium, Schizothrix mexicana

Cited by 4 publications

References 28 publications

Microwave Weed and Soil Treatment in Rice Production

Microwave Weed and Soil Treatment in Rice Production

Cyanobacterial Harmful Algal Blooms in Aquatic Ecosystems: A Comprehensive Outlook on Current and Emerging Mitigation and Control Approaches

Antioxidative responses of Nostoc ellipsosporum and Nostoc piscinale to salt stress

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