Silicon effects on photosynthesis and antioxidant parameters of soybean seedlings under drought and ultraviolet-B radiation

Shen, Xuefeng; Zhou, Yuyi; Liu, Duan; Li, Zhaohu; Eneji, A. Egrinya; Li, Jianmin

doi:10.1016/j.jplph.2010.04.011

Cited by 318 publications

(226 citation statements)

References 26 publications

(37 reference statements)

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“…1) under both well watered and water deficit condition. Silicon fertilized drought stressed plants of soybean maintained 29.53% higher relative water content than deprived drought stressed seedlings (Shen et al 2010). The enhanced ability of drought stressed silicon treated plants might be related to decrease in transpiration rate because of silicon deposition beneath the cutical (Sacala 2009;Kurdali et al 2013).…”

Section: Discussionmentioning

confidence: 97%

Silicon fertilization improves the maize (Zea maysL.) performance under limited moisture supply

Amin

Ahmad

Ali

et al. 2016

Cereal Research Communications

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Field crops are subjected to numerous inconsiderate climatic hazards that negatively affect physiological processes, growth and yield. Drought is one of the major abiotic factors that limits the agricultural productivity especially in the arid and semi-arid areas of the globe. Silicon (Si) is a naturally occurring beneficial nutrient which modulates plant growth and development events and has been known to improve the crop tolerance to abiotic stresses. With the objective to investigate the role of silicon nutrition on maize hybrids under limited moisture supply, a two year field study was conducted during 2010-11 at Post Graduate Research Station (PARS), University of Agriculture Faisalabad, Pakistan. We evaluated growth of two maize hybrids P-33H25 and FH-810 under well watered (100% field capacity) and water deficit situation (60% field capacity) as affected by Si application. Silicon was added in soil @ 100 mg/kg using Calcium Silicate as source. Water deficit condition significantly reduced agro-morphological and physiological attributes of maize plants. Silicon application significantly increased the plant height, leaf area index, yield and related attributes along with improvement in photosynthetic rate, leaf water status and osmotic adjustment under limited moisture supply. It was concluded that silicon application to droughtstressed maize enhanced its growth and yield owing to improved photosynthetic rate, higher osmotic adjustment, increased water status and lowered transpiration.

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Section: Discussionmentioning

confidence: 97%

Silicon fertilization improves the maize (Zea maysL.) performance under limited moisture supply

Amin

Ahmad

Ali

et al. 2016

Cereal Research Communications

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show abstract

“…Similarly, Rios et al (2014) found an increase in chlorophyll pigments in wheat leaves when silicon was applied. In soybean, silicon increased of photosynthetic enzymes leading to a high increase in photosynthetic pigments (Shen et al, 2010).…”

Section: Photosynthetic Parametersmentioning

confidence: 99%

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

et al. 2017

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T HE PRESENT study was carried out to investigate the effect of high NaCl concentrations on some growth parameters and physiological processes of wheat (Triticum aestivum L.) plant. The results indicated that Gemeza.9 was the most sensitive cultivar to high salinity levels compared to all tested wheat cultivars. Moreover, salinity stress caused a reduction in the germination percentage by 65% and all growth parameters by 21%, 25% and 60% in the lengths of shoot, root and leaf area, also by 27% and 48% in fresh weights of shoot, root and 40% and 75% in dry weights of shoot and root. It also increased the activity of antioxidant enzymes (peroxidase and catalase), lipid peroxidation and ascorbic acid content. Salinity induced increase of osmolytes compounds such as total soluble proteins, carbohydrates and amino acids. Furthermore, all measured yield parameters, the percentage of grain's maturity and productivity were highly decreased. Accordingly, the role of potassium humate and potassium silicate either sole or combined in alleviating the toxic effect of salinity was also studied. Results showed that application of potassium humate as sole had a stimulatory effect higher than potassium silicate or their combination. It increased the germinating percentage by 128% at 200mM NaCl. In addition, potassium humate and potassium silicate increased the photosynthetic activity, decreased the activity antioxidant enzymes (Peroxidase and Catalase) as well as biosynthesis of MDA and ascorbic acid also they induced increase biosynthesis of proteins and carbohydrates in yielded grains. Accordingly, our study recommends the application of potassium humate as an organic fertilizer and potassium silicate as a foliar spray for improving the quality and quantity of the sensitive wheat cultivar Gemeza.9 cultivated in salty lands and increases its productivity.

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“…Reducing the level of ROS generation and regulating ROS-induced cellular toxicity would be an ideal scenario for maintaining sustainable plant growth and development (Becana 2000;Zhu et al 2004;Shen et al 2010;Kim et al 2014a and c). Recently, the application of Si was reported to improve crop growth and to aid regulation of stress responses in plants (Liang et al 2007;Sivanesan and Park 2014).…”

mentioning

confidence: 99%

Silicon-mediated mitigation of wounding stress acts by up-regulating the rice antioxidant system

Kim

Khan

Waqas

et al. 2016

Cereal Research Communications

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Silicon (Si) is essential for normal growth and development in plants and is also beneficial for their responses to wounding. However, the mechanisms by which Si acts to mitigate the effects of wounding is not fully understood. This effect possibly occurs through a reduction in the oxidative stresses associated with wounding. Here, we tested this possibility by investigating the effects of applying different concentrations of Si (0,5 and 1,0 mM) to rice plants under wounding stress for a period of 6 and 12 h. We found that a higher uptake of Si was signifiacntly associated with an increase in leaf chlorophyll contet. In response to wounding induced oxidative stress, the extent of lipid bilayer peroxidation was reduced in a dose-dependent manner by Si application for 6 or 12 h. Activity of the catalase enzyme was initially lowered by Si treatment; however, at 1.0 mM Si, catalase activity increased significantly after 12h of wounding stress. A similar response was also observed for a peroxidase enzyme. Polyphenol oxidase showed a significant reduction in activity. We conclude that Si application does not only improve leaf chlorophyll content but can also overcome the oxidative stress due wounds or physical injuries.

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Silicon effects on photosynthesis and antioxidant parameters of soybean seedlings under drought and ultraviolet-B radiation

Cited by 318 publications

References 26 publications

Silicon fertilization improves the maize (Zea maysL.) performance under limited moisture supply

Silicon fertilization improves the maize (Zea maysL.) performance under limited moisture supply

Response of Salt-Stressed Wheat ( Triticum aestivum L.) to Potassium Humate Treatment and Potassium Silicate Foliar Application

Silicon-mediated mitigation of wounding stress acts by up-regulating the rice antioxidant system

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