Proline Accumulation in Response to Magnetic Fields in Date Palm (Phoenix dactylifera L.)

Dhawi, Faten; Al-Khayri, Jameel M.

doi:10.2174/1874331500802010080

Cited by 23 publications

(19 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lower values indicted that those treatments reduced the impact of stress conditions on the plant performance. The obtained results are in harmony with those obtained by Levent et al (2008) on wheat plants, Dhawi and Al-Khayri (2008) on date palm and Mervat et al (2013) found that, using Unisale or magnetic iron significantly reduced proline content in leaves of Thompson seedless grapevine comparing to control. In this respect, plants experincing salinity/ water stress in their roots zone respond physiologically by regulating their metabolism to adjust to the adversse conditions.…”

Section: Nutrientssupporting

confidence: 90%

Effect of some applications on the performance of mandarin trees under soil salinity conditions

Hamed¹

2017

NIDOC-ASRT

View full text Add to dashboard Cite

T HE RESPONSE of "Murcott" mandarin trees grown on salt affected soil to different amendments that alleviate salinity stress was studied. The present study was carried out in a private orchard located at "El-Adlia Association", El-Sharqia Governorate, Egypt, during two successive seasons (2014/2015 and 2016/2017). Nine different treatments were used as follow: Potassium silicate (PSat500 and 1000ppm), Magnetite (Mag) at a rate of 58 kg/ fed/ year, Mag + PS at 500, Mag + PSat 1000, Unisale at a rate of 7.9 L/fed., Unisale + PS at 500, and Unisale + PS at 1000 ppm beside control (Uniform fertilizer program). These different treatments mitigated salinity stress and increased root distribution, photosynthetic pigments, leaves minerals contents, fruit yield and quality of Murcott trees compared with control. The highest yield was obtained by Unisale followed in descending order by PS at 500 ppm and Magnetite treatment. Proline accumulation in fresh leaves, soil pH and EC at the end of the two seasons also were recorded.

show abstract

Section: Nutrientssupporting

confidence: 90%

Effect of some applications on the performance of mandarin trees under soil salinity conditions

Hamed¹

2017

NIDOC-ASRT

View full text Add to dashboard Cite

show abstract

“…Photosynthetic pigments content have shown a significant increase in response to magnetic fields at low dose. Short exposure to alternating magnetic field had a positive impact, whereas long exposure had a negative effect on pigments content similar to MF effect on proline [26]. Using magnetic field treatment could be a promising technique for agricultural improvements but extensive research is required, using different levels of magnetic field doses to determine the optimum dose.…”

Section: Discussionmentioning

confidence: 94%

Magnetic Fields Induce Changes in Photosynthetic Pigments Content in Date Palm (Phoenix dactylifera L.) Seedlings

Dhawi¹,

Al-Khayri²

2009

TOASJ

Self Cite

View full text Add to dashboard Cite

Growth, development and plants productivity are usually affected by photosynthetic pigments activity. Magnetic fields are known to induce biochemical changes and could be used as a stimulator for growth related reactions including affecting photosynthetic pigments. The impact of magnetic field strengths on chlorophyll and carotenoids were investigated in this study through the use of date palm (Phoenix dactylifera L.) seedlings. To study the effects of magnetic treatments on photosynthetic pigments, date palm seedlings were exposed to magnetic fields in two experiments. In the first experiment, seedlings were treated with static magnetic field at three levels of (10, 50 and 100 mT) and different durations (30, 60, 180, 240 and 360 min). At the second experiment, seedlings were treated with alternating magnetic field at 1.5 T for different durations (1, 5, 10 and 15 min). The photosynthetic pigments (chlorophyll a, chlorophyll b, carotenoids and total pigments) were assayed using spectrophotometric methods. Results indicated that pigments content (chlorophyll a, chlorophyll b, carotenoids and total pigments) was significantly increased under static magnetic field. The highest measurements were recorded at 100 mT, after 360 min of exposure. On the other hand, alternating magnetic field has decreased photosynthetic pigments content after 10 min of treatment with 1.5 T. Low magnetic field doses had a simulative effect on photosynthetic pigments whereas high doses had a negative effect. Chlorophyll a and carotenoids were more affected than chlorophyll b. Magnetic fields treatment could be used to enhance plant growth and productivity.

show abstract

“…For this reason, studies have shifted to physical methods such as gamma rays, laser, electron beam, microwave, MF, and radiofrequency energies to bring about biostimulation of seeds, which lead to increased vigor and contribute to the improved development of plants. Oxidative stress is a major factor that enhances mutation [Galland and Pazur, 2005] and increases general biological stress [Dhawi and Al-Khayri, 2008]. Values followed by the different letters in a column are significantly different at the 0.01 level.…”

Section: Discussionmentioning

confidence: 99%

“…Free radical release and element uptake enhance plant seed vigor and stimulate proteins and enzyme activities [Kurinobu and Okazaki, 1995;Stange et al, 2002]. Another explanation of increased water uptake after MF treatment is an increase in ion uptake [Dhawi et al, 2009a] and free radicals [Scaiano et al, 1994;Parola et al, 2006;Ghanati et al, 2007], causing stress and proline accumulation [Dhawi and Al-Khayri, 2008] which change the osmotic [Belyavskaya, 2001] and electric potential. The last hypothesis is that MF may increase mass and water content in plants [Dhawi, 2014] by acting as an auxin, leading to fruit ripening and increased growth [Krylov and Tarakonova, 1960;Boe and Salunkhe, 1963].…”

Section: Discussionmentioning

confidence: 99%

“…Numerous reports indicate that various metobolic pathways including reactive oxygen species (ROS), free radical metabolism [Shine and Guruprasad, 2012;Guruprasad et al, 2013], starch metabolism (a-and b-amylases, dehydrogenase, and protease) [Maffei, 2014], photosynthetic pigment contents (chlorophyll and carotenoids) [Atak et al, 2003;Taia et al, 2007;Telci et al, 2011;Guruprasad et al, 2013;Dhawi, 2014;Maffei, 2014;Yildiz et al, 2017], lipid peroxidation, oxidative metabolism, nitric oxide (NO) metabolism, catalase (CAT) activity, malondialdehyde (MDA) content, H 2 O 2 production, superoxide dismutase (SOD), glutathione reductase (GR), glutathione transferase (GT), peroxidase (PO), polyphenoloxidase (PPO), ascorbate peroxidase (APX), NO, and NO synthase [Atak et al, 2007;Sahebjamei et al, 2007;Shine and Guruprasad, 2012;Guruprasad et al, 2013;Tauati et al, 2013;Maffei, 2014], polyhenols (polyphenols oxidase activity) , amino acid metabolism (proline content) [Stange et al, 2002;Dhawi and Al-Khayri, 2008;Dhawi, 2014], protein metabolism (protein content and cryptochrome proteins: CRY 1 and CRY2) [Guruprasad et al, 2013;Maffei, 2014], and lipid metabolism (phospholipid content) [Maffei, 2014] were affected after exposing plants to MFs by alterating enzymes or metabolites in different plant species.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of magnetic field on in vitro seedling growth and shoot regeneration from cotyledon node explants of Lathyrus chrysanthus boiss

Bahadir

Beyaz

Yıldız

2018

Bioelectromagnetics

View full text Add to dashboard Cite

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.

show abstract

Proline Accumulation in Response to Magnetic Fields in Date Palm (Phoenix dactylifera L.)

Cited by 23 publications

References 26 publications

Effect of some applications on the performance of mandarin trees under soil salinity conditions

Effect of some applications on the performance of mandarin trees under soil salinity conditions

Magnetic Fields Induce Changes in Photosynthetic Pigments Content in Date Palm (Phoenix dactylifera L.) Seedlings

Effect of magnetic field on in vitro seedling growth and shoot regeneration from cotyledon node explants of Lathyrus chrysanthus boiss

Contact Info

Product

Resources

About