Nitrogen Rates and Water Stress Effects on Production, Lipid Peroxidation and Antioxidative Enzyme Activities in Two Maize (<i>Zea mays</i> L.) Genotypes

Zhang, L.-X.; Li, S.-X.; Zhang, H.; Liang, Zongsuo

doi:10.1111/j.1439-037x.2007.00276.x

Cited by 90 publications

(100 citation statements)

References 28 publications

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“…Due to the oxidative stress a variety of reactive oxygen species (ROS) are produced in plants subjected to environmental cues including NS (Arora et al 2002;Ashraf 2009). The ROS interfere with different organic molecules thereby perturbing key metabolic processes, which result in reduced photosynthesis and subsequently retarded growth (Arora et al 2002;Zhang et al 2007). It has been observed that under stress conditions most plants are capable of counteracting the ROS by overproducing a variety of antioxidant molecules, both enzymatic and nonenzymatic (Arora et al 2002;Ashraf 2009).…”

Section: Introductionmentioning

confidence: 99%

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Exogenous glycinebetaine and humic acid improve growth, nitrogen status, photosynthesis, and antioxidant defense system and confer tolerance to nitrogen stress in maize seedlings

Zhang

Lai

Gao

et al. 2013

Journal of Plant Interactions

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Abiotic stresses, including nitrogen stress (NS), can hamper photosynthesis and cause oxidative damage to plants. Upregulation of the antioxidative defense system and photosynthesis induced by exogenous glycinebetaine (GB) and humic acid (HA) can mitigate the inhibitory effects of NS on plants. In the present investigation, the beneficial effects of exogenously applied GB and HA were examined on growth, leaf N status, photosynthesis, lipid peroxidation, and activities of some key antioxidant enzymes in the seedlings of maize cv. Zhengdan 958 (ZD958) exposed to NS. NS caused a significant reduction in total dry matter of seedlings of ZD958, but both GB and HA proved effective in mitigating this inhibition, hence, the beneficial effects of GB being more pronounced than those of HA. NS led to a considerable decrease in leaf total N and endogenous GB contents, stomatal conductance (g s ), net photosynthetic rate (P n ), intercellular CO 2 concentration (C i ), and activities of two key C 4 photosynthesis enzymes phosphoenolpyruvate carboxylase (PEPCase) and ribulose-1,5-bisphosphate carboxylase (RuBPCase) as well as of superoxide dismutase (SOD) and peroxidase (POD). This treatment caused an increase in lipid peroxidation, but showed no effect on POD activity. Exogenous application of varying doses of GB resulted in a decrease in lipid peroxidation and C i , and an increase in leaf total N and endogenous glycinebetaine (EGB) content, P n , and activities of RuBPCase, PEPCase, SOD, and catalase (CAT) under NS. In contrast, application of different doses of HA resulted in a decrease in lipid peroxidation, an increase in P n , g s , and C i as well as SOD, CAT, and POD activities without increasing leaf total N and EGB content, and enhanced RuBPCase and PEPCase activities. The present study suggests that exogenous application of GB and HA can induce tolerance in maize plants to NS, but through the regulation of different mechanisms.

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Section: Introductionmentioning

confidence: 99%

“…Malondialdehyde (MDA) was extracted with 10% trichloroacetic acid and determined at 450, 532, and 600 nm with 0.6% thiobarbituric acid as described by Zhang et al (2007).…”

Section: Determination Of Malondialdehyde Contentsmentioning

confidence: 99%

Exogenous glycinebetaine and humic acid improve growth, nitrogen status, photosynthesis, and antioxidant defense system and confer tolerance to nitrogen stress in maize seedlings

Zhang

Lai

Gao

et al. 2013

Journal of Plant Interactions

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“…Results obtained in other experiments indicate both an increase in and variability of superoxide dismutase, PO, and CAT activity in drought-tolerant varieties compared to susceptible varieties (Mencon et al, 1995). In general, antioxidant enzyme activities will initially increase and then decrease with the advancement of crop growth under stress conditions; however, the timing of such changes may differ depending on the extent of a variety's tolerance to drought (Zhang et al, 2007). Water stress and nitrogen deficit increased H 2 O 2 production and MDA concentration in Arabidopsis (Shin et al, 2005) and decreased antioxidant enzyme activities in corn leaves (Sun et al, 2001).…”

Section: Discussionmentioning

confidence: 86%

“…Aires et al (2006) stated that nitrogen is one of the most important factors affecting plant growth as well as the biosynthesis of secondary metabolites. Increased production and improved drought tolerance in crops with increasing nitrogen supplies under stress conditions have been reported by several researchers (Boutraa and Sanders, 2001;Sun et al, 2001;Sinclair and Vadez, 2002;Zhang et al, 2007). Mohammadian et al (2005) declared that the effects of mild drought stress on root dry weight were greater than on shoot dry weight in sugar beet.…”

Section: Introductionmentioning

confidence: 96%

“…Optimal nitrogen nutrition is the basis of plant growth and production and is necessary for the biosynthesis of amino acids, proteins, and enzymes (Sinclair and Vadez, 2002). Its lack may be an abiotic stress that reduces yield (Zhang et al, 2007). Higher nitrogen application rates increased the accumulation of dry matter (Duan et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Changes in enzymatic and nonenzymatic antioxidant defense mechanisms of canola seedlings at different drought stress and nitrogen levels

Ahmadi¹,

Ebadi²,

Jahanbakhsh³

et al. 2015

Turk J Agric For

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To evaluate the responses of canola seedlings to different levels of drought stress and nitrogen at different growth stages, a factorial experiment was conducted in a completely randomized design with three replications at the experimental greenhouse of Mohaghegh Ardabili University in 2013. Treatments included three levels of drought stress (30%, 50%, and 70% of FC) and five levels of nitrogen (control, based on soil test results; 25% less than the recommended level; 50% less than the recommended level; 25% more than the recommended level; and 50% more than the recommended level). The recommended level of nitrogen, based on soil test results, was 0.09 g of nitrogen per kilogram of soil. Results showed that drought stress, nitrogen, and their interaction significantly affected the enzymatic activity of antioxidant catalase (CAT), polyphenol oxidase (PPO), and peroxidase (PO) at various stages of growth. Proline was also affected by drought stress and nitrogen. Maximum CAT activity (794.04 OD mg protein min -1 ) was observed at the 4-6 leaf stage under mild drought stress conditions (50% of FC) and a nitrogen application rate 50% less than the recommended level. Increased rates of nitrogen enhanced the PPO activity at the 4-6 and 6-8 leaf stages. PO had a negative response to increased rates of nitrogen application. The highest rate of increase in proline was at the 8-10 leaf stage: 205% and 207% higher under mild drought stress (50% of FC) and severe drought stress (30% of FC) conditions, respectively, compared to favorable moisture conditions (70% of FC). Increased nitrogen application led to an increase in proline production at all stages of sampling (4-6, 6-8, and 8-10 leaf stages).

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Morpho‐physiological traits, antioxidant capacity, and nitrogen metabolism in ramie under nitrogen fertilizer

et al. 2020

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Optimum fertilization is one of the challenges to agricultural sustainability. Understanding the physiological and biochemical response of plants to available nutrients is important for optimization of crop management practices. Present study investigated the effects of different levels of N fertilizer (N0 = 0 kg ha−1 [Control], N1 = 140 kg ha−1 [Low], N2 = 280 kg ha−1 [Medium], and N3 = 420 kg ha−1 [High]) on growth, gaseous exchange, antioxidant capacity, and N metabolism in ramie (Boehmeria nivea L.) under greenhouse conditions in a completely randomized design (CRD) with three replications. Nitrogen application improved the plant growth, chlorophyll contents, and antioxidant activity of ramie; the maximum shoot fresh biomass (91 g), shoot dry biomass (13.7 g), number of leaves (46.5), and number of stems (6.4) were recorded at medium N rate. However, the growth was reduced under high N rate. Except for intercellular CO2 concentration, all the other gas exchange parameters were significantly affected by the N levels. Increasing N level improved the activities of nitrate reductase (NR), glutamine synthetase (GS), and glutamate synthase (GOGAT), and enhanced the chlorophyll and soluble protein contents in ramie leaves. Thus, N fertilizer at medium rate is relatively more effective in the growth of ramie and biomass production.

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Nitrogen Rates and Water Stress Effects on Production, Lipid Peroxidation and Antioxidative Enzyme Activities in Two Maize (Zea mays L.) Genotypes

Cited by 90 publications

References 28 publications

Exogenous glycinebetaine and humic acid improve growth, nitrogen status, photosynthesis, and antioxidant defense system and confer tolerance to nitrogen stress in maize seedlings

Exogenous glycinebetaine and humic acid improve growth, nitrogen status, photosynthesis, and antioxidant defense system and confer tolerance to nitrogen stress in maize seedlings

Changes in enzymatic and nonenzymatic antioxidant defense mechanisms of canola seedlings at different drought stress and nitrogen levels

Morpho‐physiological traits, antioxidant capacity, and nitrogen metabolism in ramie under nitrogen fertilizer

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