Effects of CO2 laser pretreatment on drought stress resistance in wheat

Qiu, Zongbo; Liu, Xiao; Tian, Xiang-Jun; Yue, Ming

doi:10.1016/j.jphotobiol.2007.09.014

Cited by 84 publications

(72 citation statements)

References 27 publications

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“…These results are in agreement with those repoted by [29] on cotton seeds, [30] on iris, [31] on potatoes plant and [32] on vicia faba under effect of gamma rays and [33] on wheat plants by using laser radiation.…”

Section: Catalase (Eugfwt)supporting

confidence: 92%

Studies on the Effect of Gamma, Laser Irradiation and Progesterone Treatments on Gerbera Leaves

Metwally¹

2015

EJB

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Abstract:The present study, we aimed to evaluate the effect of progesterone (prog.) concentrations (10, 20 and 30 ppm), gamma rays (γ) doses (100,150 and 250 rad), helium neon laser rays (He-Ne) exposure time (1.0, 5.5 and 11.5 min.) and argon laser rays (Ar) exposure time (1.0, 7.5 and 15.5 min.) and some interaction treatments between progesterone and irradiation treatments on biochemical constituents i.e. growth regulators and some enzymes activity in gerbera leaves. For this reason, at the greenhouse of the National Research Centre, Dokki, Giza, Egypt. Pot experiments were carried out two successive seasons of 2006 and 2007, and growth regulators (IAA, GA 3 , Cytok. and ABA), some enzymes activity in gerbera leaves (POD, CAT, Alk. phosph and Acid. phosph) and protein content were determined. The results showed that, low conc. of progesterone hormone, low exposure time of argon and He-Ne laser has a great effect on increasing POD activities and Cytokine content. Gamma rays at 150 rad increased ABA, POD, CAT and Alkaline and acid phosphatase, while 250 rad increased IAA and GAlike substances. The least value of alkaline phosphatase activity was recorded by progesterone treatments.

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Section: Catalase (Eugfwt)supporting

confidence: 92%

Studies on the Effect of Gamma, Laser Irradiation and Progesterone Treatments on Gerbera Leaves

Metwally¹

2015

EJB

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“…Many studies have shown that lasers play a positive role in accelerating plant growth and metabolism (Paleg and Aspinall 1970;Govil et al 1991;Qi et al 2002;Chen et al 2005;Qiu et al 2008), and suitable doses of laser irradiation improved germination capacity of plant seeds, enzymatic activities and the concentration of chlorophyll (Qi et al 2000;Chen et al 2005;Qiu et al 2007). Qi et al (2000Qi et al ( , 2002 and Han et al (2002) have also illustrated that laser pretreatment could protect cells of broad bean and wheat from enhanced UV-B radiation damage, and has a repair role on the seedlings of broad bean damaged by enhanced UV-B.…”

Section: Mots Clé Smentioning

confidence: 99%

The damage repair role of He-Ne laser on wheat exposed to osmotic stress

Qiu¹,

Li²,

Yue³

2010

Can. J. Plant Sci.

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M. 2010. The damage repair role of He-Ne laser on wheat exposed to osmotic stress. Can. J. Plant Sci. 90: 691Á698. In order to determine the damage repair role of helium-neon (He-Ne) laser on wheat (Triticum aestivum L.) exposed to osmotic stress, 12-d-old seedlings (with two fully expanded leaves) were treated with osmotic stress using 5% (wt/vol), 10% (wt/vol) and 15% (wt/vol) polyethylene glycol (PEG 6000) treatment for 9 d. After 9 d of osmotic stress, a He-Ne laser was employed to irradiate seedlings of spring wheat for 0 min, 1 min and 3 min. Changes in the concentration of malondialdehyde (MDA), hydrogen peroxide (H 2 O 2 ), glutathione (GSH), ascorbate (AsA), the production rate of superoxide radical (O ( 2 ), the activities of ascorbate peroxidase (APX), peroxidase (POD), catalase (CAT), superoxide dismutase (SOD) and glutathione reductase (GR) were measured to test the effects of laser radiation. The results showed that laser radiation for 3 min conferred tolerance to osmotic stress in wheat seedlings by decreasing the concentration of MDA and the production rate of O ( 2 , and increasing the activities of SOD and APX and GSH concentration. It was suggested that those changes in MDA, O ( 2 , antioxidative enzymes and antioxidative compounds were responsible for the increase in osmotic stress tolerance observed in the experiments. Therefore, antioxidative enzymes and antioxidative compounds may participate in the repair effect of laser on seedlings under osmotic stress. This is the first investigation reporting the damage repair role of He-Ne laser on plants exposed to osmotic stress.Key words: Helium-neon laser, wheat (Triticum aestivum L.), osmotic stress, antioxidative system Qiu, Z.-B., Li, J. T. et Yue, M. 2010. Re´fection du ble´expose´a`un stress osmotique par le laser He-Ne. Can. J. Plant Sci. 90: 691Á698. Afin de pre´ciser le pouvoir de re´fection du laser a`he´lium-ne´on (He-Ne) sur le ble´(Triticum aestivum L.) expose´aù n stress osmotique, les auteurs ont soumis des plantules de 12 jours (deux feuilles comple`tement de´veloppe´es) a`un stress osmotique en les traitant pendant 9 jours avec une solution a`5% (p/v), a`10% (p/v) ou a`15% (p/v) de polye´thyle`ne glycol (PEG 6000). Au terme de cette pe´riode, ils ont irradie´les plantules de ble´de printemps avec un laser He-Ne pendant 0, 1 ou 3 minutes. Pour ve´rifier l'effet des rayonnements, ils ont mesure´la variation de la concentration de malondialde´hyde (MDA), de peroxyde d'hydroge`ne (H 2 O 2 ), de glutathion (GSH) et d'ascorbate (AsA), le taux de production de radicaux superoxydes (O ( 2 ) ainsi que l'activite´de l'ascorbate peroxydase (APX), de la peroxydase (POD), de la catalase (CAT), de la dismutase superoxyde (SOD) et de la glutathion re´ductase (GR). Les re´sultats indiquent que 3 minutes d'irradiation rendent les plantules de ble´tole´rants au stress osmotique en re´duisant la concentration de MDA et le taux de production de O ( 2 , ainsi qu'en accroissant l'activite´de la SOD et de l'APX de meˆme que la concentration de GSH. On ...

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“…The literature data indicate that laser irradiation increases seed germination and improves plant growth and metabolism (Chen et al, 2005a, b;Drozd and Szajsner, 2007;Perveen et al, 2010;Podleoeny 2002). Numerous studies have proved that laser irradiation improves plant resistance to some environmental stresses (Chen, 2008;Qi et al, 2000;Qiu et al, 2008). The influence of laser irradiation on plants is most likely connected with its light and electromagnetic effects.…”

Section: Introductionmentioning

confidence: 99%

Impact of presowing laser irradiation of seeds on sugar beet properties

Sacała¹,

Demczuk²,

Grzys³

et al. 2012

International Agrophysics

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A b s t r a c t. The aim of the experiment was to establish the influence of biostimulation on the sugar beet seeds. The seeds came from the specialized breeding program energ'hill or were irradiated by the laser in two doses. The impact of the biostimulation was analyzed by determining the nitrate reductase activity and the nitrate, chlorophyll and carotenoids contents in leaves, as well as, the dry matter and sugar concentration in mature roots. The field experiment was established for two sugar beet cultivars. Biostimulation by irradiation and a special seed breeding program energ'hill had a positive influence on some examined parameters (particularly on nitrate reductase activity in Ruveta and in numerous cases on photosynthetic pigments in both cultivars). Regarding the dry matter accumulation and sugar concentration this impact was more favourable for Tiziana than for Ruveta cultivar.K e y w o r d s:

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Effects of CO2 laser pretreatment on drought stress resistance in wheat

Cited by 84 publications

References 27 publications

Studies on the Effect of Gamma, Laser Irradiation and Progesterone Treatments on Gerbera Leaves

Studies on the Effect of Gamma, Laser Irradiation and Progesterone Treatments on Gerbera Leaves

The damage repair role of He-Ne laser on wheat exposed to osmotic stress

Impact of presowing laser irradiation of seeds on sugar beet properties

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