Effects of La3+ on the Active Oxygen-Scavenging Enzyme Activities in Cucumber Seedling Leaves

Shi, Ping; Chen, G. C.; Huang, Zhiwei

doi:10.1007/s11183-005-0044-3

Cited by 20 publications

(8 citation statements)

References 22 publications

(21 reference statements)

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“…These results were consistent with previous reports [ 51 – 52 ]. What’s more, the K, Ca, Mg, Fe and Mn contents in roots (K and Ca content in leaves) positively (or negatively) correlated with La content in the roots ( Table 6 ), which disturbed the effect of La on the activities of antioxidant enzyme system in the roots [ 53 – 54 ].…”

Section: Discussionmentioning

confidence: 99%

Combined Effects of Lanthanum (III) and Acid Rain on Antioxidant Enzyme System in Soybean Roots

Zhang

Wang

et al. 2015

PLoS ONE

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Rare earth element pollution (REEs) and acid rain (AR) pollution simultaneously occur in many regions, which resulted in a new environmental issue, the combined pollution of REEs and AR. The effects of the combined pollution on the antioxidant enzyme system of plant roots have not been reported. Here, the combined effects of lanthanum ion (La3+), one type of REE, and AR on the antioxidant enzyme system of soybean roots were investigated. In the combined treatment of La3+ (0.08 mM) and AR, the cell membrane permeability and the peroxidation of cell membrane lipid of soybean roots increased, and the superoxide dismutase, catalase, peroxidase and reduced ascorbic acid served as scavengers of reactive oxygen species. In other combined treatments of La3+ (0.40 mM, 1.20 mM) and AR, the membrane permeability, malonyldialdehyde content, superoxide dismutase activity, peroxidase activity and reduced ascorbic acid content increased, while the catalase activity decreased. The increased superoxide dismutase activity, peroxidase activity and reduced ascorbic acid content were inadequate to scavenge the excess hydrogen peroxide and superoxide, leading to the damage of the cell membrane, which was aggravated with the increase in the concentration of La3+ and the level of AR. The deleterious effects of the combined treatment of La3+ and AR were stronger than those of the single treatment of La3+ or AR. Moreover, the activity of antioxidant enzyme system in the combined treatment group was affected directly and indirectly by mineral element content in soybean plants.

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Section: Discussionmentioning

confidence: 99%

Combined Effects of Lanthanum (III) and Acid Rain on Antioxidant Enzyme System in Soybean Roots

Zhang

Wang

et al. 2015

PLoS ONE

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“…Reactive oxygen species (ROS) are continually being produced in plants, which can act as a signal molecule in plants and trigger a series of cellular responses [37,38]. In plants, an increase in the ROS levels exceeding the detoxification levels of plant tissues could be toxic.…”

Section: Introductionmentioning

confidence: 99%

Effects of Gibberellin (GA4+7) in Grain Filling, Hormonal Behavior, and Antioxidants in High-Density Maize (Zea mays L.)

Cui

Song

Zuo

et al. 2020

Plants

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Dense plant cultivation is an efficient approach to improve maize production by maximizing the utilization of energy and nutrients. However, dense plant populations may aggravate the abortion rate of young grains, resulting in fewer kernels per ear. The rate and duration of grain-filling play decisive roles in maize grain yield. Therefore, to increase plant density, enhancing the grain-filling rate, extending the growth period of individual maize plants and regulating crop senescence would be the first priority. In this study, we examined the regulatory effects of GA4+7 under two application methods: shanks and silks were moistened by cotton full with GA4+7 solution at concentrations of 0, 10, 60, and 120 mg L−1. The results showed that GA4+7 improved the grain-filling rate by increasing the content of auxin, gibberellin, zeatin, and abscisic acid in grains compared to control plants. In addition, the auxin, gibberellin, and zeatin contents in the grains were positively and significantly correlated with the maximum grain weight and the maximum and mean grain-filling rates. Moreover, GA4+7 increased the activities of superoxide dismutases, catalases, and peroxidases and reduced the malondialdehyde content in leaves compared with untreated plants. At the concentration of 60 mg L−1, GA4+7 showed the greatest effect on shank and silk applications (Sh-60 and Si-60) followed by 10 mg L−1 (Sh-10) for shank treatment and 120 mg L−1 (Si-120) for silk treatment. Our results suggest that a concentration of 60 mg L−1 GA4+7 for shank and silk application may be efficiently used for changing the level of hormones in grains and antioxidant enzymes in ear leaves, which may be useful for enhancing grain-filling rate and delaying leaf senescence, resulting in an increase in maize grain yield.

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“…It is well known that rare-earth elements form a special group and have interesting effects on plant growth (He and Loh 2000, Ouyang et al 2003). Lanthanum is a rare-earth element and can relieve oxidative damage in plants exposed to a variety of environmental stresses (Gao and Chen 2005, Shi and Chen 2005, Wei et al 1997). Feng et al (1999 reported that La 3+ could alleviate the decrease of osmotic potential, increase the content of proline and reduce the accumulation of MDA under osmotic stress in the leaves of maize seedlings.…”

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confidence: 99%

Lanthanum relieves salinity-induced oxidative stress in Saussurea involucrata

Zhao²,

Wang³

et al. 2007

Biologia plant.

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Changes in growth, physiological and biochemical characteristics under salt stress with or without La 3+ treatment in Saussurea involucrata Kar. et Kir. were investigated. The results showed that La 3+ relieved the plant growth inhibition, improved the leaf water potential and water content, increased the soluble protein and the proline contents and decreased malondialdehyde content under salt stress. Further, addition of La 3+ significantly increased the activities of superoxide dismutase, ascorbate peroxidase, catalase, and glutathione reductase, decreased the photosynthetic pigment decomposition and increased the ratio of total chlorophyll to carotenoids under salt stress.Additional key words: antioxidative enzymes, carotenoids, chlorophyll, growth, leaf water potential, proline, proteins. ⎯⎯⎯⎯ Saussurea involucrataKar. et Kir. is an endangered medicinal plant growing in the Tianshan and Kunlun mountain ranges of China, and is very sensitive to salinity stress. High salinity causes both water stress and ionic toxicity, which disputes the various enzymes, function of photosynthetic apparatus and many other processes and severely affects yield and quality of this medicinal plant (Chen et al. 1999). It is well known that rare-earth elements form a special group and have interesting effects on plant growth (He and Loh 2000, Ouyang et al. 2003). Lanthanum is a rare-earth element and can relieve oxidative damage in plants exposed to a variety of environmental stresses (Gao and Chen 2005, Shi and Chen 2005, Wei et al. 1997). Feng et al. (1999 reported that La 3+ could alleviate the decrease of osmotic potential, increase the content of proline and reduce the accumulation of MDA under osmotic stress in the leaves of maize seedlings. There is salt stress affecting the growth of S. involucrata in saline area. Up to now, there is few reports on the role of La 3+ in alleviating the oxidative damage in this plant under salt stress. So, study on this may improve the endangered plant growth and production. In the present study, the effect of La 3+ on oxidative damage in S. involucrata under salt stress was investigated. The investigation also goes in some way towards studying the effects of La 3+ on plant growth, soluble protein content and photosynthetic pigments in this species in response to salinity stress.Seeds of Saussurea involucrata Kar. et Kir. were surface-disinfested and aseptically planted into Vermiculite, then they were irrigated with liquid NaCl solution at different concentrations (0, 20, 50 and 100 mM) on 0, 5 th , 10 th and 15 th day. The 15-d-old germinated seedlings were divided into two groups. Previous reports indicated that 0.1 mM La 3+ was more suitable concentration for alleviating environment stress (Pang et al. 2002. So, in this experiment, treatment group seedlings under varying salinity stress were sprayed with 100 cm 3 0.1 mM La(NO 3 ) 3 . 6 H 2 O solution once a day for five consecutive days. The control group seedlings under varying salinity stress were sprayed with the same volume water. The...

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Effects of La3+ on the Active Oxygen-Scavenging Enzyme Activities in Cucumber Seedling Leaves

Cited by 20 publications

References 22 publications

Combined Effects of Lanthanum (III) and Acid Rain on Antioxidant Enzyme System in Soybean Roots

Combined Effects of Lanthanum (III) and Acid Rain on Antioxidant Enzyme System in Soybean Roots

Effects of Gibberellin (GA4+7) in Grain Filling, Hormonal Behavior, and Antioxidants in High-Density Maize (Zea mays L.)

Lanthanum relieves salinity-induced oxidative stress in Saussurea involucrata

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