Nitrogen nutrition of rice plants under salinity

Abdelgadir, Eltayeb; Oka, Mariko; Fujiyama, Hideyasu

doi:10.1007/s10535-005-0104-8

Cited by 40 publications

(26 citation statements)

References 9 publications

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“…However, it has been reported that Cl − and Na + act in a combined fashion to give greater toxicity than when either ion is present in excess alone. [15] Similar findings on the comparisons between SO 4 2− and Cl − salinity were reported for the dry mass and root growth rate of rice, [16] maize, [17] and blueberry [18] at an equimolar concentration of Na. The greater yield reduction caused by NaCl salinity is probably associated with the higher rate of toxic Cl − ion accumulation.…”

Section: Discussionsupporting

confidence: 83%

Concentrations of essential and nonessential elements in shoots and storage roots of carrot grown in NaCl and Na₂SO₄ salinity

et al. 2008

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This study was undertaken to examine the effects of NaCl and Na 2 SO 4 salinity on the growth of carrot (Daucus carota L.) and the concentrations of essential and nonessential elements in the shoots and storage roots determined by polarized energy dispersive x-ray fluorescence (PEDXRF). Both types of salinity reduced plant growth, but growth reduction in NaCl salinity was more pronounced. Na concentrations in shoots and roots were increased by salinity treatment. The concentration of Cl was also increased by NaCl salinity. Salinity treatments decreased K concentrations in the shoots and storage roots, and Ca concentrations in the shoots. Concentration of P in shoots and roots, and S, Mg, and Si in roots were not significantly affected by salinity treatments, while the NaCl salinity reduced S and Si and increased Mg concentrations in the shoots. Fe, Zn, Mn and Mo concentrations in the shoots were not significantly affected by salinity treatments. In the storage roots, the concentration of Fe was significantly increased by NaCl salinity, while Na 2 SO 4 salinity significantly increased Zn and Mn concentrations in storage roots. Concentration of Al in the storage roots was significantly higher with NaCl treatment than with Na 2 SO 4 treatment. Ni concentrations in the shoots were strongly increased by NaCl salinity, while concentrations of Br in the shoots and storage roots were significantly reduced by NaCl salinity. Rb concentrations in shoots and storage roots were significantly reduced by Na 2 SO 4 salinity, but not by NaCl salinity. Concentration of Cs in the shoots was increased by both types of salinity, but Cs concentration of the roots was increased by Na 2 SO 4 . Concentration of Ba in the shoots was lowered by Na 2 SO 4 treatment, while it was increased in the roots by Na 2 SO 4 salinity. Salinity did not affect the Ce concentration in the shoots but increased it in the storage root, and NaCl salinity increased U concentration in the roots of the carrot plants.the reduction in Ca concentration was greater in Na 2 SO 4 salinity than in NaCl salinity. Concentrations of P, S, Mg and SiThe effect of salinity treatments on P, S, Mg, and Si concentrations in carrot shoots and storage roots are given in Table 3. Concentrations

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Section: Discussionsupporting

confidence: 83%

Concentrations of essential and nonessential elements in shoots and storage roots of carrot grown in NaCl and Na₂SO₄ salinity

et al. 2008

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“…Rice is the most staple food for human (Peng, Laza, Visperas, Khush, & Virk, 2005), and it is more susceptible to the rhizosphere salinity than many other cereals (Joseph, Jini, & Sujatha, 2010). High Na + and Cl − concentration in saline soils have antagonistic effects on K, P, Zn, Fe, Ca, Mn and Mg ions (García et al., 2010; Ismail, 2009; Jung, Shin, & Schachtman, 2009), as well as nitrogen (N) uptake in rice crop (Abdelgadir, Oka, & Fujiyama, 2005). Consequently, seedling growth is inhibited (Gao, Chao, & Lin, 2007), number of tillers, panicles, and spikelets are reduced, and biomass and grain yield are decreased seriously (Abbas, Saqib, Akhtar, & Haq, 2015; Abdullah, Khan, & Flowers, 2001; Farshid & Hassan, 2012; Khatun & Flowers, 1995).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen management enhanced plant growth, antioxidant ability, and grain yield of rice under salinity stress

Zhu

Shi

et al. 2020

Agronomy Journal

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Salinity is a major abiotic stress limiting crop growth and reducing grain yield. In recent years, little progress was made in salt‐tolerant cultivation techniques. Therefore, a controlled experiment was conducted to study the effects of nitrogen management (NM) on growth, antioxidant ability, and yield performance of salt‐tolerant rice (Oryza sativa L.) under salinity stress. Three salinity levels (0‰ as control; 0.75‰, 4.3 dS m−1; and 1.5‰, 7.7 dS m−1) and four levels of NM (tillering fertilizer/panicle initiation fertilizer = 7:3, 6:4, 5:5, and 4:6) were arranged in this study. Under salinity stress, plant height, tiller number, fresh weight, grain yield, panicle, spikelets per panicle, grain weight, and soluble sugar content in stem were significantly decreased. In contrast, antioxidant parameters of superoxide dismutase, peroxidase, and catalase were significantly increased. Grain filling percentage and sucrose content were slightly changed. Compared to the control, grain yield was reduced by 45.6%, 34.8%, 60.4%, and 46.7% at the ratio of 7:3, 6:4, 5:5, and 4:6 NM at 0.75‰ salinity level, and 73.5%, 59.7%, 74.8%, and 61.7% at 1.5‰ salinity level, respectively. The highest yield was generated by 6:4 NM at both the 0.75‰ and 1.5‰ salinity level, and the lowest by 4:6 and 5:5. However, NM could obviously alleviate the inhibition effects of salinity stress and improve antioxidant ability of rice. Among them, 6:4 NM performed the best alleviation effects, followed by 7:3 and 5:5 NM. This study suggests that the appropriate NM can effectively alleviate salinity stress and increase grain yield.

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“…Polyamines exert their functions through complex interactions with metabolic networks, diverse-signaling pathways, and intricate hormonal cross-talks (Alcázar et al, 2010;Sequera-Mutiozabal et al, 2016). In addition to the salt composition (Abdelgadir et al, 2005), the N form might also affect the plant sensitivity to salinity (Speer and Kaiser 1994). At the whole-plant level, the effect of stress is usually perceived as a decrease in photosynthesis and growth, and it is associated with alterations in C and N metabolism (Garcıá-Mata and Lamattina, 2001).…”

Section: Differential Responses Of Genotypes To Salinity Levels and Nmentioning

confidence: 99%

“…It has been found that organic fertilization and mineral elements such as phosphorus and nitrogen can regulate plant drought stress responses by maintaining a higher relative water content, lower malondialdehyde, and promoting antioxidant enzyme activity such as superoxide dismutases and peroxidase (Li-Ping et al, 2006). N uptake and metabolism affect plant nutrient composition (Kováčik et al, 2012), contributing to nutrient balance and plant resistance to salt-stress (Mahmood and Kaiser 2003;Abdelgadir et al, 2005). Therefore, application of appropriate N fertilizer rate and source is a requirement of good agricultural practices in chamomile, which can affect not only quantitative traits but also its qualitative traits such as pharmaceutical properties and nutritional values (Andrzejewska and WoropajJanczak 2014).…”

Section: Differential Responses Of Genotypes To Salinity Levels and Nmentioning

confidence: 99%

Variations in the growth, oil quantity and quality, and mineral nutrients of chamomile genotypes under salinity stress

Askari‐Khorasgani

Mortazaeinezhad

Rafiee

2017

JCEA

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Understanding how plants respond to salinity, which severely restricts plant growth, productivity, and survival, is highly important in agriculture. Using three genotypes of Matricaria recutita L. (Shiraz, Ahvaz, and Isfahan) with different sensitivity to NaCl, the effect of long-term (about 110 days) NaCl treatments (2.5, 6, 9, and 12 dS * m -1 ) on crop growth, oil quality and quantity, and nutrient variations were investigated to underpin its agricultural management in the future. The adaptation strategy and plant responses were influenced by salinity level, genotype, and genotype × salinity interactions. With higher productivity compared to the Isfahan genotype, the Shiraz and Ahvaz genotypes had efficient Na + exclusion at root surface as an avoidance strategy; however, under higher NaCl concentration, their higher performance were mainly attributed to the Na + sequestration in root vacuoles and higher Ca 2+ /Na + , Mg 2+ /Na + , and root/shoot ratios as tolerance strategies. The higher oil yield and chamazulene percentage in the Isfahan genotype were not affected by salinity level and were only genotype dependent. Under 12 dS*m -1 NaCl, roots of the Shiraz and Ahvaz genotypes accumulated markedly higher Ca 2+ (2.5% and 1.5% respectively) and Mg 2+ (1.6% and 1.3% respectively), required for membrane stability and chlorophyll synthesis, respectively, more than the Isfahan genotype (0.2% Ca and 0.1% Mg 2+ ) and considerably more than the control plants to keep low concentrations of ion toxicity of Na 2+ and Cl -in shoots. Overall, greater salt tolerance found in the Shiraz and Ahvaz genotypes could be due to a variety of mechanisms, including higher efficiency of nutrient uptake (Ca 2+ , Mg 2+ , and Zn 2+ ), utilization (N, P, Ca 2+ , and Mg 2+ ), compartmentation (Na in roots), and maintenance of higher root/shoot ratios. Taking flower and oil yield as well as chamazulene percentage into consideration, the findings recommended cultivation of the Ahvaz genotype in the absence of salt stress (by 1.18 g*plant -1 , 6.25 kg*ha -1 , and 12.54% respectively), the Isfahan genotype under 6 dS*m -1 NaCl (by 0.73 g*plant -1 , 4.84 kg*ha -1 , and 11.66% respectively), and the Shiraz genotype under high salinity of 9 and 12 dS*m -1 NaCl (by 0.68 g*plant -1 , 5.20 kg*ha -1 , and 13.46% respectively under 12 dS*m -1 NaCl).

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Nitrogen nutrition of rice plants under salinity

Cited by 40 publications

References 9 publications

Concentrations of essential and nonessential elements in shoots and storage roots of carrot grown in NaCl and Na₂SO₄ salinity

Concentrations of essential and nonessential elements in shoots and storage roots of carrot grown in NaCl and Na₂SO₄ salinity

Nitrogen management enhanced plant growth, antioxidant ability, and grain yield of rice under salinity stress

Variations in the growth, oil quantity and quality, and mineral nutrients of chamomile genotypes under salinity stress

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Nitrogen nutrition of rice plants under salinity

Cited by 40 publications

References 9 publications

Concentrations of essential and nonessential elements in shoots and storage roots of carrot grown in NaCl and Na2SO4 salinity

Concentrations of essential and nonessential elements in shoots and storage roots of carrot grown in NaCl and Na2SO4 salinity

Nitrogen management enhanced plant growth, antioxidant ability, and grain yield of rice under salinity stress

Variations in the growth, oil quantity and quality, and mineral nutrients of chamomile genotypes under salinity stress

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Concentrations of essential and nonessential elements in shoots and storage roots of carrot grown in NaCl and Na₂SO₄ salinity

Concentrations of essential and nonessential elements in shoots and storage roots of carrot grown in NaCl and Na₂SO₄ salinity