Effects of low doses of short-term gamma irradiation on growth and development through two generations of Pisum sativum

Zaka, R.; Chenal, C; Misset, Marie-Thérèse

doi:10.1016/j.scitotenv.2003.08.010

Cited by 77 publications

(33 citation statements)

References 25 publications

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“…The increased plant vigor caused by irradiation could be explained by the stimulation of biosynthesis of some amino acids like lysine, phenylalanine (Antonov et al 1989). The hypothetic origins of these stimulation are acceleration in cell division rates (Zaka et al 2004) as well as activation of auxin (Gunckel and Sparrow 1961). Several investigators reported such stimulation provoked with low doses of ionizing radiations in Pinus kesiya and Pinus wallichaina (Thapa 2004), Anacardium occidentale (Klarizze 2005), Vitis vinifera (Charbaji and Nabaulsi, 1999), and Pisum sativum (Zaka et al 2004).…”

Section: Discussionmentioning

confidence: 99%

Gamma radiation effects on growth and yield attributes of Psoralea corylifolia L. with reference to enhanced production of psoralen

et al. 2010

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The present work describes radiation-induced effects on vegetative, reproductive traits and psoralen content in Psoralea corylifolia L. The effects of gamma radiation on Psoralea seeds were investigated by exposing seeds with doses of 2.5, 5, 10, 15 and 20 kGy at dose rate of 1.65 kGyh -1 and studying the plant growth at three developmental stages: preflowering, flowering and post flowering (seed to seed) after irradiation. Irradiation with lower doses of gamma rays significantly improved vegetative traits while higher doses proved depressing for same parameters. Similar trend was followed in reproductive traits. Psoralen, showed highest concentration in seeds (7.56%) at 20 kGy and lowest in control roots (0.23%). Increment in psoralen was striking for higher gamma doses applied. These long-term changes in plant development may be attributed to alteration in plant genome induced by irradiation. The results show in depth development stimulation and enhancement of secondary metabolite in Psoralea corylifolia L. following low and high dose treatment respectively depicting the potential of gamma rays in plant biotechnology and metabolomics.

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Section: Discussionmentioning

confidence: 99%

Gamma radiation effects on growth and yield attributes of Psoralea corylifolia L. with reference to enhanced production of psoralen

et al. 2010

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“…The radio stimulation established in this study is not specific to durum wheat. Several investigators report such stimulation provoked with low doses of ionizing radiations in Pinus kesiya and P. wallichiana (Thapa 2004), Anacardium occidentale (Klarizze 2005), Vitis vinifera (Charbaji and Nabulsi 1999), Eruca veisicaria (Moussa 2006) and Pisum sativum (Zaka et al 2004).…”

Section: Root and Epicotyl Growthmentioning

confidence: 99%

“…The hypothetic origins of these stimulations are acceleration in cell division rates (Zaka et al 2004) as well as an activation of auxin (Gunckel and Sparrow 1961). The results obtained in this study suggest also that the improvement in length and in the number of the seminal roots following irradiation with 20 Gy may help the plants to be more efficient in water absorption under water deficiency conditions.…”

Section: Root and Epicotyl Growthmentioning

confidence: 99%

Effects of gamma rays irradiation on seed germination and growth of hard wheat

Melki¹,

Marouani²

2009

Environ Chem Lett

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The effects of irradiation with low doses (0, 10, 20 and 30 Gy) of radioactive cobalt ( 60 Co) c rays on seed germination, shoot and epicotyl growth of hard wheat (Triticum durum Desf.) were investigated under laboratory and glasshouse conditions. Irradiated wheat seeds kept their germination speed and capacity levels compared to the control. However, improvements of ?18 and ?32% were, respectively obtained in root number and root length at the 20-Gy dose. Moreover, the 20-Gy-irradiation dose generated an increase of ?33% in epicotyl length. The 20-Gy-irradiation dose improved the root length by ?32% and root number by ?75% in plants grown on liquid medium. A lower root length increase of ?23% was obtained with the same treatment under glasshouse growing conditions. These results show that the in depth development stimulation of hard wheat roots following gamma ray treatment may be used for drought control.

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“…Wi et al [8] reported no alterations in the height of A. thaliana seedlings 12 days after gamma irradiation up to 5 Gy, while exposure to 50 Gy significantly decreased plant height. Irradiation effects on two generations of P. sativum seedlings were studied by Zaka et al [3] reporting doses above 6 Gy significantly inhibited plant growth and productivity in the first generation while the effects were even more severe in the second generation. For red pepper plants on the other hand, Kim et al [14] reported growth stimulating effects after exposure to relatively low doses of 2 and 4 Gy, while exposure to 8 and 16 Gy inhibited growth again.…”

Section: Resultsmentioning

confidence: 99%

“…While exposure to high radiation doses causes death of organisms, previous studies on plants have indicated that exposure to lower ionizing radiation doses can cause growth reduction, a decreased reproduction capacity, DNA damage and morphological changes [1][2][3][4]. Besides various genetic and morbidity endpoints, irradiation with relatively low doses can also cause a stimulation of growth as reviewed by Sax [5].…”

Section: Introductionmentioning

confidence: 99%

Study of biological effects and oxidative stress related responses in gamma irradiatedArabidopsis thalianaplants

et al. 2011

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Abstract. This study aimed at investigating biological effects in Arabidopsis thaliana leaves and roots irradiated for 72 h with 3.5 Gy or 30 Gy of gamma radiation, and to unravel oxidative stress related responses to achieve a better understanding of the importance of the cellular redox balance as a modulator in gamma radiation stress. A. thaliana performs like a rather radioresistant plant species as no alterations on growth and only minor alterations in the nutrient profile were observed. Gamma irradiation did not seem to induce an NADPH mediated oxidative burst and lipid peroxidation appeared to be directly induced by ionizing radiation rather than mediated through LOX activity. As ionizing radiation can cause indirect damage via water radiolysis, H 2 O 2 is hypothesized to be an important reactive oxygen species under radiation stress. Although most H 2 O 2 -scavenging enzymes remained unchanged, important alterations were observed for CAT1, CAT2 and CAT3 expression.

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Effects of low doses of short-term gamma irradiation on growth and development through two generations of Pisum sativum

Cited by 77 publications

References 25 publications

Gamma radiation effects on growth and yield attributes of Psoralea corylifolia L. with reference to enhanced production of psoralen

Gamma radiation effects on growth and yield attributes of Psoralea corylifolia L. with reference to enhanced production of psoralen

Effects of gamma rays irradiation on seed germination and growth of hard wheat

Study of biological effects and oxidative stress related responses in gamma irradiatedArabidopsis thalianaplants

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