Silicon Decreases Transpiration Rate and Conductance from Stomata of Maize Plants

Gao, Xiaopeng; Zou, Chunqin; Wang, Lijun; Zhang, Fusuo

doi:10.1080/01904160600851494

Cited by 258 publications

(142 citation statements)

References 18 publications

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“…They observed 14.18%, 15.25% and 13.09% increase in shoot length, shoot dry weight and chlorophyll content, respectively of silicon fed drought-stressed plants of soybean than drought-stressed plants that were grown without silicon addition. Siliconmediated increase in growth of water deficit stressed plants may be due to the important role of silicon in the promotion of water status of stressed plants (Ahmed et al 2013) that might be the reason of lowered transpiration (Gao et al 2006). Nonetheless, increase in the photosynthetic rate in silicon-fertilized drought-stressed plants may improve the growth (Ahmed et al 2013).…”

Section: Discussionmentioning

confidence: 99%

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: 99%

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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“…The results support those obtained by Chen et al (2011), who found reductions in E and C i and dry matter accumulation in rice plants supplied with Si. Gao et al (2006) also found a positive relationship between Si in leaves and decreased transpiration rate in wheat crop different water regimes. This highlights the best use of available soil water.…”

Section: Efficiency Of Water Use (Wue) and Instantaneous Carboxylatiomentioning

confidence: 86%

Effects of silicon (Si) fertilization on gas exchange and production in Brachiaria

Sarto¹,

Lana²,

Rampim³

et al. 2016

Aust J Crop Sci

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Calcium silicate (CaSiO 3 ) applied to the soil may increase Si content in the soil and plants, as well as reduce sweating and increase water use efficiency. In this study, we aimed to investigate whether the application of CaSiO 3 increased Si content in plants and interfered with gas exchange and production components in Brachiaria. The experiment was performed using 8-L plastic pots in a greenhouse. Treatments were arranged in a randomized block design in a 3 × 5 factorial: three soils (Rhodic Acrudox, Rhodic Hapludox, and Arenic Hapludult) and five silicate rates (0, 1, 2, 4, and 6 t ha -1 of CaSiO 3 /MgSiO 3 ) were used; four replications were performed. CaSiO 3 application to the soil increases Si concentration in the leaves. Si in plants reduces internal CO 2 concentration and increases the efficiency of water use and instantaneous carboxylation efficiency. In soils with low pH and a high Al +3 level, which is toxic, reduction in plant sweating increases the intrinsic efficiency of water use in Brachiaria. Si helped to alleviate the toxic effects of Al .

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“…Hattori et al (2005) reported that the diurnal determination of the transpiration rate indicated that the Si-treated sorghum could extract a larger amount of water from a drier soil and maintain a higher stomatal conductance. The improved ability to retain water by plants treated with Si may result from a lowered transpiration rate and a higher value of water use efficiency (Gao et al 2006). Leaf transpiration occurs mainly through the stomata and partly through the cuticle.…”

Section: Discussionmentioning

confidence: 99%

Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress

Ahmad¹,

Haddad²

2011

CZECH J GENET PLANT

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Abstract:The effect of silicon (Si) was investigated on the major antioxidant enzyme activities including superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), peroxidase (POD), relative water content (RWC), chlorophyll and soluble protein contents, proline (Pro) and glycine betaine (GB) accumulation in three different growth stages (2 nd , 4 th leaf and tillering stages) of wheat (Triticum aestivum L.) plants under drought stress. The experiment was performed in a completely randomized design for three treatments including control, drought and Si-drought (2mM silicate sodium/kg) with three replications in a greenhouse. The results indicated that Si partially offset the negative impacts of drought stress increasing the tolerance of wheat by rising Pro and GB accumulation and soluble protein content. Compared with the plants treated with drought, applied Si significantly enhanced the activities of SOD, CAT, APX and POD. In contrast, drought stress caused a considerable decrease in RWC, chlorophyll and soluble protein contents. This Si effect was time-dependent and became stronger in the tillering stage. The results of the present experiment coincided with the conclusion that Si alleviates water deficit of wheat by preventing the oxidative membrane damage and may be associated with plant osmotic adjustment.

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Silicon Decreases Transpiration Rate and Conductance from Stomata of Maize Plants

Cited by 258 publications

References 18 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

Effects of silicon (Si) fertilization on gas exchange and production in Brachiaria

Study of silicon effects on antioxidant enzyme activities and osmotic adjustment of wheat under drought stress

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