Silicon Improves the Tolerance to Water-Deficit Stress Induced by Polyethylene Glycol in Wheat (Triticum aestivum L.) Seedlings

Pei, Zeng-Fei; Ming, Dongfeng; Liu, D.; Wan, G. L.; Geng, Xinxin; Gong, Haijun; Zhou, Weijun

doi:10.1007/s00344-009-9120-9

Cited by 296 publications

(204 citation statements)

References 48 publications

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“…It also significantly enhanced the activities of SOD, CAT, APX and POX and it was time-dependent and became stronger in the tillering stage (Ahmad and Haddad, 2011). In contrast, Pei et al 2010 revealed that in short term water deficit, enhancement of the antioxidant defense was prominently responsible for the alleviative effect of Si whereas osmotic adjustment played a meager role.…”

Section: Role Of Silicon In Stressesmentioning

confidence: 90%

Role of silicon under water deficit stress in wheat: (Biochemical perspective): A review

Sapre

Vakharia

2016

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Silicon's role in mediating resistance against various stresses has been a matter of focus in the past decade. Poaeceae family plants are known as high accumulators of silicon. Wheat shows rapid absorption, the optimum accumulation of silicon occurring at around 20 days. Silicon plays a role as a mechanical and a physiological barrier. It also alters the levels of osmolytes and antioxidant enzymes which are a first line of defense in the water deficit stress; also reducing the levels of oxidative stress factors such as hydrogen peroxide. But the results vary with respect to the modes of stress application and its duration. Nowadays, foliar mode of silicon application is carried out compared to the traditional soil application yielding some promising results. Further studies are needed to confirm the mechanisms governing protection which can be done with the comparison of the transcriptome analysis of the stressed plants and also microscopic studies revealing the site of deposition.

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Section: Role Of Silicon In Stressesmentioning

confidence: 90%

Role of silicon under water deficit stress in wheat: (Biochemical perspective): A review

Sapre

Vakharia

2016

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“…Si further affects the root structure and improves root resistance in dry soils (Hattori et al, 2005). It has been observed that, Si increased antioxidant defense capabilities and therefore maintained physiological processes such as photosynthesis (Pei et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

The effects of silicon and titanium on safflower (Carthamus tinctorius L.) growth under moisture deficit condition

Janmohammadi

Mohamadi

Shekari

et al. 2017

AAS

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Safflower is one of important crop in semi-arid regions of the world, where the precipitations are limited. In order to investigate the effect of foliar spray of nano-silicon dioxide (10 and 20 mM) and nano titanium dioxide (25 and 50 mM) and water-deficit stress (irrigation after 110 mm evaporation) on growth parameters and yield components of spring safflower a field experiment was carried out at the highland semi-arid region, in, North West of Iran. Water deficit stress significantly reduced morpho-physiological traits such as ground cover, canopy width, leaf fresh mass, leaf are and plant height) as well as yield components (e.g. capitulum diameter, seed mass and seed number per capitulum). However, the plants grown under water deficit condition showed the higher harvest index than well irrigated plants. Comparison of the foliar treatments showed that the both nano-particles (silicon and titanium) improved the plant growth and yield components over the control. However, the effect of nanosilicon was more prominent than titanium. The highest amount of seed oil was recorded under well irrigated condition (irrigation after 60 mm evaporation) with foliar application of nano-titanium. The percentage of palmitic acid, arachidic acid and myristic acid in seed increased by nano-titanium application. Altogether, principal component analysis indicated that spray of 10 mM nano silicon dioxide was best foliar treatments under all moisture regimes.Key words: safflower; agronomic traits; foliar spraying; nanoparticles; principal component analysis; semi-arid region IZVLEČEK UČINKI SILICIJA IN TITANA NA RAST ŽAFRANIKE (Carthamus tinctorius L.) V RAZMERAH POMANKANJA VODEŽafranika je pomembna poljščina v semiaridnih območjih, kjer so padavine omejene. Z namenom ugotavljanja učinkov pršenja listov z nano-silicijevim (10 in 20 mM) in nano titanovim dioksidom (25 in 50 mM) ter stresa zaradi vodnega deficita (namakanje po 110 mm evaporacije) na rastne parametre in komponente pridelka pomladanske žafranike je bil izveden poljski poskus na višinskem semiaridnem območju severno zahodnega Irana. Vodni deficit je značilno zmanjšal morfološko-fiziološke lastnosti (pokritost tal, širino krošnje, svežo maso listov, listno površino in višino rastlin) kot tudi komponente pridelka (premer koška, maso semen in število semen na košek). Kljub temu so imele rastline, ki so rastle v razmerah pomanjkanja vode večji žetveni indeks kot dobro namakane. Primerjava foliarnih obravnavanj je pokazala, da so oboji nano delci (silicijevi in titanovi) izboljšali rast rastlin in komponente pridelka v primerjavi s kontrolo. Učinek silicijevih nano delcev je bil bolj izražen kot titanovih. Največja vsebnost olja v semenih je bila v dobro namakanih rastlinah (namakanje po 60 mm evaporacije) s foliarno dodajanimi nano delci titana. Odstotki palmitinske, arahidonske in miristične kisline v semenih so se povečali po uporabi nano titanovih delcev. Analiza glavnih komponent je pokazala, da je bilo pršenje z 10 mM nano silicijeva dioksida najboljše foliarno...

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“…Thus improves the water status of plants and keeping the leaves erect and increases light penetration hence improving photosynthetic efficiency of plants under water deficit situation. Pei et al [53] reported that silicon sustains water potential of leaves in wheat plants under water stress at the similar level as that of the well watered plants. Therefore, it is obvious that a positive correlation exists between silicon uptake and water potential of plants under drought condition.…”

Section: Relative Water Contentmentioning

confidence: 99%

Sodium silicate mediated response of antioxidative defense system in <em>Lycopersicon esculentum</em> mill. under water stress

Malhotra

Kapoor

Ganjewala

et al. 2017

ijpm

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A b s t r a c tThe present study was designed to study the effect of water stress on Lycopersicon esculentum Mill. and role of sodium silicate in the protection of tomato plants under water deficit condition. Different biochemical parameters such as photosynthetic pigments, protein, sugar, MDA content, proline, nitrate reductase activity and activities of antioxidant enzymes (SOD, CAT, APX and POX) were examined in tomato leaves at 40 and 60 DAS by the standard methods. The lycopene and β-carotene contents in tomato fruits were also analyzed at 60, 65 and 70 DAS. Water stress significantly decreased relative water content (RWC), pigment content, sugar and protein contents in tomato leaves at 60 DAS but the accumulation of proline was stimulated in tomato leaves under water deficit condition. The activities of antioxidant enzymes such as SOD, CAT, APX and POX were significantly increased under (3d and 6d) water stress condition at 60 DAS. This study offers first hand information on the water stress-induced oxidative stress in Lycopersicon esculentum and development of antioxidative defense system against drought. The results obtained clearly indicated the positive impact of sodium silicate in protection of tomato plants under water deficit condition.

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Silicon Improves the Tolerance to Water-Deficit Stress Induced by Polyethylene Glycol in Wheat (Triticum aestivum L.) Seedlings

Cited by 296 publications

References 48 publications

Role of silicon under water deficit stress in wheat: (Biochemical perspective): A review

Role of silicon under water deficit stress in wheat: (Biochemical perspective): A review

The effects of silicon and titanium on safflower (Carthamus tinctorius L.) growth under moisture deficit condition

Sodium silicate mediated response of antioxidative defense system in <em>Lycopersicon esculentum</em> mill. under water stress

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