Effects of gamma irradiation on morphological changes and biological responses in plants

Wi, Seung Gon; Chung, Byung Yeoup; Kim, Jae-Sung; Kim, Jin Hong; Baek, Myung-Hwa; Lee, Ju-Woon; Kim, So Hyun

doi:10.1016/j.micron.2006.11.002

Cited by 270 publications

(150 citation statements)

References 28 publications

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“…Seed germination and 5-days growth post-emergence was not affected by previous gamma irradiation. Wi et al [15] found that plants exposed to relatively low doses of gamma rays (1-5 Gy) developed normally while the growth of plants irradiated at high doses (50 Gy) was seriously hampered. Growth of A. thaliana seedlings exposed to low-dose gamma rays (1-2 Gy) was even slightly increased compared to that of the control.…”

Section: Gross Plant Responses: Growth and Reproductionmentioning

confidence: 99%

Effect of low-dose chronic gamma exposure on growth and oxidative stress related responses inArabidopsis thaliana

et al. 2009

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Abstract. The biological responses induced by low-dose chronic gamma exposure of hydroponically grown Arabidopsis thaliana, irradiated during a full life cycle (seed to seed) were investigated. Applied dose rates were 2300, 375 and 85 Gray h −1 . Plants (roots and shoots) were harvested after 24 day (inflorescence emergence), at 34 days (∼50% of flowers open) and at 54 days (silice ripening). Gamma exposure significantly reduced root weight compared to the control but no clear effect of dose rate level on root dry weight was observed. Leaf weight was significantly reduced at the highest irradiation level, only after 54 days exposure. ED-10 was estimated at 10 Gy h −1 . Seed germination was not affected by gamma irradiation. For several of the stress enzymes studied enzyme capacity was generally stimulated at the low and intermediate gamma irradiation level compared to the control and highest irradiation level. No pattern was observed in concentration or reduction state of the non-enzymatic antioxidants, ascorbate and glutathione. Lipid peroxidation products in leaves were present highest at full flowering and decreased with exposure level at this growth stage. At the other two growth stages, lipid peroxidation products were unaffected by gamma treatment.

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Section: Gross Plant Responses: Growth and Reproductionmentioning

confidence: 99%

Effect of low-dose chronic gamma exposure on growth and oxidative stress related responses inArabidopsis thaliana

et al. 2009

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“…Pertinent to this, the increased level of H 2 O 2 in plants exposed to gamma radiation is well documented, the highest concentrations being observed in leaves, 6 while SOD activity has been closely related to the adaptive responses provoked by low dose radiation. 7,8 Hydrogen peroxide is the key species in redox signaling showing the ability to modulate different biological processes by activating/inhibiting gene transcription and enzyme activity.…”

mentioning

confidence: 87%

“…However, some low dose radiation effects in plants are not in accordance with the linear nothreshold (LNT) dose response model. It has been reported that low dose gamma radiation provokes in plants: various physiological changes on the cellular level, 6 promoted expression of specific genes, e.g., those for antioxidative defense enzymes, 10-12 hormesis, 13 cross-adaptation to UV-B irradiation, high-intensity light, and drought stress, 11,14 increased biomass yield, plant vigor and growth, and grain yield, 11,[15][16][17] fruit ripening, 18 enhancements of embryogenesis, 19 and additional trichome formation. 8 The link between PGA and low dose gamma radiation-activated redox signaling cascades is implicated by the observation that the radiation induces drastic inhibition of PGA-decomposing enzyme polygalacturonase and the upregulation of pectin methylesterase, 18 thus Figure 1.…”

Section: Disclosure Of Potential Conflicts Of Interestmentioning

confidence: 99%

Converting low dose radiation to redox signaling

Pristov

Spasić

Spasojević

2013

Plant Signaling & Behavior

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“…Oxygen can easily react with many free radicals. The amount of the radicals presents in deoxyribose or bases; harmful DNA damages occur [9][10][11].…”

Section: Effects Of Ionizing Radiationsmentioning

confidence: 99%

Applications of Ionizing Radiation in Mutation Breeding

Çelik¹,

Atak²

2017

New Insights on Gamma Rays

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As a predicted result of increasing population worldwide, improvements in the breeding strategies in agriculture are valued as mandatory. The natural resources are limited, and due to the natural disasters like sudden and severe abiotic stress factors, excessive floods, etc., the production capacities are changed per year. In contrast, the yield potential should be significantly increased to cope with this problem. Despite rich genetic diversity, manipulation of the cultivars through alternative techniques such as mutation breeding becomes important. Radiation is proven as an effective method as a unique method to increase the genetic variability of the species. Gamma radiation is the most preferred physical mutagen by plant breeders. Several mutant varieties have been successfully introduced into commercial production by this method. Combinational use of in vitro tissue culture and mutation breeding methods makes a significant contribution to improve new crops. Large populations and the target mutations can be easily screened and identified by new methods. Marker assisted selection and advanced techniques such as microarray, next generation sequencing methods to detect a specific mutant in a large population will help to the plant breeders to use ionizing radiation efficiently in breeding programs.

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Effects of gamma irradiation on morphological changes and biological responses in plants

Cited by 270 publications

References 28 publications

Effect of low-dose chronic gamma exposure on growth and oxidative stress related responses inArabidopsis thaliana

Effect of low-dose chronic gamma exposure on growth and oxidative stress related responses inArabidopsis thaliana

Converting low dose radiation to redox signaling

Applications of Ionizing Radiation in Mutation Breeding

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