Influence of Ca2+ in biological stimulating effects of AC magnetic fields on germination of bean seeds

Sakhnini, Lama

doi:10.1016/j.jmmm.2006.11.077

Cited by 12 publications

(11 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…hypothesized that MF affects germination by altering water relations due to changes in the ionic current through the cellular membrane in the treated seeds. After bean seeds were germinated, seedlings were grown at different concentrations of CaCl 2 (0.1-10 mM) after seeds were exposed to a local GMF (DC) and sinusoidal timevarying extremely low frequency MF (AC) (28.3 Hz, 20 μT; tuned to cyclotron resonance of Ca 2+ ) (Sakhnini 2007). AC field enhanced the germination of seeds independent of CaCl 2 concentration.…”

Section: Explanation Based On Oriented Movements Of Substancesmentioning

confidence: 99%

Magnetic fields: how is plant growth and development impacted?

2015

View full text Add to dashboard Cite

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.

show abstract

Section: Explanation Based On Oriented Movements Of Substancesmentioning

confidence: 99%

Magnetic fields: how is plant growth and development impacted?

2015

View full text Add to dashboard Cite

show abstract

“…It seems maximum of both treatments have had antagonistic effect on the Fv / Fm parameter of bean. Therefore it could be say that the magnetic field applied on the bean seeds and its permanence effect (due to the paramagnetic components of bean seeds), especially Magnetoteropism or special effect of magnetic field on germination of bean seeds (Cakmak et al 2010;Maffei 2014), increased germination and root length of bean seeds treated with magnetic field were observed in different concentrations of calcium chloride (Sakhnini, 2007), are acceptable but it was reported that bean seed produced more vigorous seedlings just in 100 mT magnetic fields (Rajendra, 2005). In another study, the authors stated that the use of magnetic fields may affect the flow of calcium (paramagnetic element).…”

Section: Resultsmentioning

confidence: 99%

Untitled

et al. 2018

View full text Add to dashboard Cite

Bentazon herbicide is a post-emergent herbicide and a photosynthesis inhibitor in broadleaf weed. However, different parameters of Bean Kautsky curve changed significantly. Seeds were treated magnetically at three levels normal, 100 mT and 150 mT (3 hours) and weed control (weeding by hand), weed free (untreated), control by 25 percent herbicide, or 0.6 l.ha -1 , 50 percent herbicide or 1.2 l.ha -1 , and 100 percent herbicide or 2.5 l.ha -1 . Due to the major paramagnetic components of bean seeds, affected the parameter minimum quantum yield of PS Π (Fv/Fm) significantly (p<0/01) as in the treatment of magnetic field 150 mT and 2.5 l.ha -1 herbicide decreased significantly (0.61) although Bentazon is a selective herbicide of bean. However, besides posing damage to photooxidation and center PS Π, 150 mT magnetic fields lengthened the time to reach maximum fluorescence (493.3) and maximized the stress to the parameter Fo and Fo/Fm. In the case that no herbicide was applied, it amounted to the maximum fluorescence at the least time (183.3). Also, in the absence of herbicides (both weeding and weed free), basic quantum efficiency were always normal (0.14 to 0.21); however, by using the herbicides, it exceeded its normal range. Therefore, the selective of the herbicide did not mean the immunity of the plant against the herbicide completely. In general, 100 mT magnetic fields were known to be an effective treatment for plant's exposure to Bentazon herbicides and stronger field had the opposite effect.

show abstract

“…This is not uncommon for in vivo conditions (see Binhi [ 9 ] for leading references). The relation of MF fieldstrength and EMF amplitude B AC / B DC was selected in many studies in a range 0.3–2 [ 13 , 15 , 41 ], meaning a B AC up to 100 μT. The finding of an effective B AC < 100 nT and vanishing of the ICR effect for EMF amplitudes exceeding some multiples of that value by some laboratories [ 34 ] nonetheless could indicate a relatively narrow and sharply defined plane, in which Larmor orbits lie.…”

Section: Discussionmentioning

confidence: 99%

“…Radish ( R. sativus ) showed slowed germination, but stimulated growth after exposure to Ca 2+ -ICR conditions [ 15 ]. Under similar conditions, germinating beans showed increased radicle lengths, which additionally depended on the external Ca 2+ concentration [ 13 ]. Barley plants had deficiencies in growth, water uptake and photosynthetic pigment synthesis that pertained for several weeks after a treatment during the first 5 days of germination with field frequency combinations matching a Ca 2+ -ICR condition [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Transient effect of weak electromagnetic fields on calcium ion concentration in Arabidopsis thaliana

Pazur

Rassadina

2009

BMC Plant Biol

View full text Add to dashboard Cite

Background: Weak magnetic and electromagnetic fields can influence physiological processes in animals, plants and microorganisms, but the underlying way of perception is poorly understood. The ion cyclotron resonance is one of the discussed mechanisms, predicting biological effects for definite frequencies and intensities of electromagnetic fields possibly by affecting the physiological availability of small ions. Above all an influence on Calcium, which is crucial for many life processes, is in the focus of interest. We show that in Arabidopsis thaliana, changes in Ca 2+ -concentrations can be induced by combinations of magnetic and electromagnetic fields that match Ca 2+ -ion cyclotron resonance conditions.

show abstract

Influence of Ca2+ in biological stimulating effects of AC magnetic fields on germination of bean seeds

Cited by 12 publications

References 6 publications

Magnetic fields: how is plant growth and development impacted?

Magnetic fields: how is plant growth and development impacted?

Untitled

Transient effect of weak electromagnetic fields on calcium ion concentration in Arabidopsis thaliana

Contact Info

Product

Resources

About