Impact of silicon on various agro-morphological and physiological&lt;br&gt;parameters in maize and revealing its role in enhancing water stress&lt;br&gt;tolerance

Agnihotri, Sajad

doi:10.9755/ejfa.v25i2.10581

Cited by 25 publications

(3 citation statements)

References 13 publications

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“…stomata conductance has been focused on while less attention has been paid to stomatal formation, observed as morphology and density. Some of previous studies presumed that Si plays a role in decreasing the transpiration rate by changing the stomatal movement rather than affecting its morphology and density (Gao et al, 2006;Zargar & Agnihotri, 2013). In contrast, Dias et al (2014) showed similiar result with the present study which stated that there is indication that addition of Si as sodium silicate promoted the development of higher stomata density.…”

Section: Discussioncontrasting

confidence: 55%

Empirical Study on Effect of Silicon Application on Rice Blast Disease and Plant Morphology in Indonesia

Siregar¹,

Husnain²,

Sato³

et al. 2016

JAS

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Si fertilizer was never used in rice cultivation by farmers in Indonesia. To evaluate the effect of Si application on blast disease, plant morphologies, and stomata formation on rice plant, a field experiment was conducted in West Java, Indonesia. Two treatments, Si+ (with 1000 kg·ha -1 of silica gel) and Si-(without Si application) were set in a randomized complete block design. The results showed that Si application in soil with high available Si 426 mg SiO 2 kg -1 significantly reduce leaf (p < 0.01) and neck (p < 0.05) blast disease infection and increased stomata density (p < 0.01). Si-had severer leaf blast infection than Si+ which could reach up to score 4 and 5. Si deposited on the tissue surface acts as a physical barrier by thickening the Si layer in cuticle which could decrease the number of blast lessions on leaf blades by limiting hypa penetration and invasion. Recently there was no report to prove whether Si deposition improves or changes the stomata density. The results confirmed that Si application have the potential of improving rice growth and yield through the increase of resistance to blast infection and increment in stomata density although they did not result in the yield increment in the present study.

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Section: Discussioncontrasting

confidence: 55%

Empirical Study on Effect of Silicon Application on Rice Blast Disease and Plant Morphology in Indonesia

Siregar¹,

Husnain²,

Sato³

et al. 2016

JAS

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“…In fact, Si raised the relative leaf water content (RWC) and the stomatal size in severely drought-stressed collards to the same conditions that were found in well-watered plants. Drought-stressed plants usually have lower RWC (Farooq, Wahid, Kobayashi, Fujita, & Basra, 2009;Sampathkumar, Pandians, Jeyakumar, & Manickasundaram, 2013), but addition of Si increased the RWC in drought-stressed maize (Zargar & Agnihotri, 2013), wheat (Gong & Chen, 2012;Pei et al, 2010) and pepper (Lobato et al, 2009) to similar levels of non-stressed plants. The increased RWC shows that Si improved water uptake and retention in drought-stressed collard.…”

Section: Discussionmentioning

confidence: 99%

Combined effects of soil silicon and drought stress on host plant chemical and ultrastructural quality for leaf‐chewing and sap‐sucking insects

Teixeira

Valim

Oliveira

et al. 2019

J Agronomy Crop Science

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It was postulated that Si‐mediated plant resistance to herbivory changes with soil water status, increasing when plants are under drought stress. We subjected collard (Brassica oleracea) to such soil variables and assessed plant responses and effects on the leaf‐chewing larvae of Plutella xylostella and the sap‐sucking aphid Brevicoryne brassicae. Silicon accumulated in collard leaves independently of soil water conditions, but it influenced mainly drought‐stressed plants. Silicon suppressed harmful effects of drought on leaf and root length and raised leaf water content and stomatal size to the same conditions of well‐watered plants. Drought stress reduced hemicellulose and cellulose, but Si did not influence them or lignin. Combination of drought and Si increased total and soluble leaf nitrogen. Drought decreased total glucosinolates, but Si increased such defence metabolites to similar concentrations that were found in well‐watered plants. Nutritional changes mediated by drought and Si in fibre, leaf water content, soluble nitrogen and glucosinolates did not increase insect performance in any feeding guild. Instead, caterpillars performed worse in drought‐stressed or Si‐treated collards, mainly in plants under combined conditions. Silicon improved plant resistance to drought and herbivore stresses.

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“…The authors have shown that silica gel can be used as an active priming practice at 1.5% concentration for better development of a plant under drought conditions. Likewise, calcium silicate employed in the soil in the same conditions enhanced seed germination of maize (Z. mays; 15 different cultivars) up to 80.96% under water stress (under rainfed conditions) (Zargar and Agnihotri, 2013 application improved the seed germination in four tomatoes (S. lycopersicum) cultivars under drought as compared to control (without Si). The authors investigated the effects of exogenous Si (0.5 mM) to tomato (S. lycopersicum) bud seedlings under water deficit stress simulated by 10% (w/v) PEG-6000 in four different cultivars ('Jinpengchaoguan', 'Zhongza No.9', 'Houpi L402' and 'Oubao318'), which significantly improved the seed germination by 21.9% -38.2% (Shi et al, 2014).…”

Section: Si-mediated Improvement In Seed Germination Under Drought Conditionmentioning

confidence: 99%

Silicon-Mediated Improvement in Tolerance of Economically Important Crops Under Drought Stress

Pang¹

2019

Appl. Ecol. Env. Res.

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Drought is considered as one of the significant threats to food security worldwide as it inhibits the growth, yield and quality of economically important crops. An increase in crop yield is considered a tremendous achievement as it will be helpful to meet the current growing demand for food in droughtstressed areas. Silicon (Si) is the second most abundant component in the soil. Recent research has revealed that Si can enhance plant tolerance against drought stress. In addition, application of Si can increase seed germination, underground and aboveground biomass, photosynthetic pigments, quality and yield of grains. Therefore, we have summarized the importance of Si in improving the drought tolerance in plants. Furthermore, we have explained the Si-mediated mechanisms which led to modifications in gas exchange properties, homeostasis of the nutrient element, synthesis of compatible solute, osmotic adjustments, antioxidant stimulation and enzymatic action in plants under drought stress. We believe that the current study will help in understanding the importance of Si application in plants under drought stress conditions.

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Impact of silicon on various agro-morphological and physiological<br>parameters in maize and revealing its role in enhancing water stress<br>tolerance

Cited by 25 publications

References 13 publications

Empirical Study on Effect of Silicon Application on Rice Blast Disease and Plant Morphology in Indonesia

Empirical Study on Effect of Silicon Application on Rice Blast Disease and Plant Morphology in Indonesia

Combined effects of soil silicon and drought stress on host plant chemical and ultrastructural quality for leaf‐chewing and sap‐sucking insects

Silicon-Mediated Improvement in Tolerance of Economically Important Crops Under Drought Stress

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