Effects of selenium on agronomical characters of winter wheat exposed to enhanced ultraviolet-B

Yao, Xiaogang; Chu, Jianzhou; He, Xueli; Liu, Binbin; Jingmin, Li; Yue, Zhaowei

doi:10.1016/j.ecoenv.2013.03.024

Cited by 67 publications

(33 citation statements)

References 35 publications

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“…Among the ROS, H 2 O 2 is the most common, and it is found to be increased in response to various abiotic stresses including HT. In our study, sharp increases in the levels of MDA and H 2 O 2 were observed which were corroborated with other studies [1,38]. These results were due to the inefficient antioxidant defense system under heat stress.…”

Section: Discussionsupporting

confidence: 95%

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Modulation of Antioxidant Machinery and the Methylglyoxal Detoxification System in Selenium-Supplemented Brassica napus Seedlings Confers Tolerance to High Temperature Stress

Hasanuzzaman

Nahar

Alam

et al. 2014

Biol Trace Elem Res

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We investigated the protective role of selenium (Se) in minimizing high temperature-induced damages to rapeseed (Brassica napus L. cv. BINA Sarisha 3) seedlings. Ten-day-old seedlings which had been supplemented with Se (25 μM Na2SeO4) or not were grown separately under control temperature (25 °C) or high temperature (38 °C) for a period of 24 or 48 h in nutrient solution. Heat stress caused decrease in chlorophyll and leaf relative water content (RWC) and increased malondialdehyde (MDA), hydrogen peroxide (H2O2), proline (Pro), and methylglyoxal (MG) contents. Ascorbate (AsA) content decreased at any duration of heat treatment. The content of reduced glutathione (GSH) increased only at 24 h of stress, while glutathione disulfide (GSSG) markedly increased at both duration of heat exposure with associated decrease in GSH/GSSG ratio. Upon heat treatment the activities of ascorbate peroxidase (APX), glutathione S-transferase (GST) and glyoxalase I (Gly I) were increased, while the activities of monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), and catalase (CAT) were decreased. The activities of glutathione reductase (GR) and glutathione peroxidase (GPX) remained unchanged under heat stress. However, heat-treated seedlings which were supplemented with Se significantly decreased the lipid peroxidation, H2O2, and MG content and enhanced the content of chlorophyll, Pro, RWC, AsA, and GSH as well as the GSH/GSSG ratio. Selenium supplemented heat-treated seedlings also showed enhanced activities of MDHAR, DHAR, GR, GPX, CAT, Gly I, and Gly II as compared to heat-treated seedlings without Se supplementation. This study concludes that exogenous Se application confers heat stress tolerance in rapeseed seedlings by upregulating the antioxidant defense mechanism and methylglyoxal detoxification system.

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Section: Discussionsupporting

confidence: 95%

“…In contrast, exogenous Se resulted in further increase in Pro content (Fig. 1b) in the seedlings under heat stress which is associated with improved water content and reduction in oxidative stress [38].…”

Section: Discussionmentioning

confidence: 95%

Modulation of Antioxidant Machinery and the Methylglyoxal Detoxification System in Selenium-Supplemented Brassica napus Seedlings Confers Tolerance to High Temperature Stress

Hasanuzzaman

Nahar

Alam

et al. 2014

Biol Trace Elem Res

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“…However, Yang et al (2003) recorded non-significant effect of Se application on growth and yield of soybean, whereas a decrease in growth of potato was noted by Germ et al (2007). Likewise, Yao et al (2013) recorded significant increase in spike length, weight per spike and grain yield of wheat by Se foliar application.…”

Section: Yield and Yield Componentsmentioning

confidence: 47%

“…3e). An evident increase in Zn grain concentration by Se supply has been reported in wheat (Yao et al 2013) and rape plants ( …”

Section: Nutrients Contents In Grainmentioning

confidence: 96%

Supplemental selenium improves wheat grain yield and quality through alterations in biochemical processes under normal and water deficit conditions

et al. 2015

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“…The increase of ultraviolet (UV) radiation on the Earth's surface as a result of the depletion of the ozone layer has caused a great impact on terrestrial and aquatic ecosystems [1] and crop production [2]. In the environment, UV radiation is an additional stress beyond the stress caused by the presence of pollutants to which organisms are commonly exposed [3,4], and a synergistic or additive effect between these stressors may be found, causing higher environmental hazards than those predicted for chemical exposure that may lead to severe economic consequences.…”

Section: Introductionmentioning

confidence: 99%

Responses of wheat (Triticum aestivum) and turnip (Brassica rapa) to the combined exposure of carbaryl and ultraviolet radiation

Lima

Soares

Loureiro

2015

Enviro Toxic and Chemistry

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The increase of ultraviolet (UV) radiation reaching the Earth's surface as a result of increased ozone layer depletion has affected crop production systems and, in combination with pesticides used in agricultural activities, can lead to greater risks to the environment. The impact of UV radiation and carbaryl singly and in combination on Triticum aestivum (wheat) and Brassica rapa (turnip) was studied. The combined exposure was analyzed using the MixTox tool and was based on the conceptual model of independent action, where possible deviations to synergism or antagonism and dose-ratio or dose-level response pattern were also considered. Compared with the control, carbaryl and UV radiation individually led to reductions in growth, fresh and dry weight, and water content for both species. Combined treatment of UV and carbaryl was more deleterious compared with single exposure. For T. aestivum length, no interaction between the 2 stressors was found (independent action), and a dose-level deviation was the best description for the weight parameters. For B. rapa, dose-ratio deviations from the conceptual model were found when length and dry weight were analyzed, and a higher than expected effect on the fresh weight (synergism) occurred with combined exposure.

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Effects of selenium on agronomical characters of winter wheat exposed to enhanced ultraviolet-B

Cited by 67 publications

References 35 publications

Modulation of Antioxidant Machinery and the Methylglyoxal Detoxification System in Selenium-Supplemented Brassica napus Seedlings Confers Tolerance to High Temperature Stress

Modulation of Antioxidant Machinery and the Methylglyoxal Detoxification System in Selenium-Supplemented Brassica napus Seedlings Confers Tolerance to High Temperature Stress

Supplemental selenium improves wheat grain yield and quality through alterations in biochemical processes under normal and water deficit conditions

Responses of wheat (Triticum aestivum) and turnip (Brassica rapa) to the combined exposure of carbaryl and ultraviolet radiation

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