Role of silicon in enhancing resistance to freezing stress in two contrasting winter wheat cultivars

Liang, Yongchao; Zhu, Jiachen; Li, Zhaojun; Chu, Guixin; Ding, Yong; Zhang, Jie; Sun, Wanchun

doi:10.1016/j.envexpbot.2008.06.005

Cited by 145 publications

(80 citation statements)

References 33 publications

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“…Application of Si increased antioxidant activities of plants and thereby alleviate ROS damage induced by stresses such as salt (Liang et al 2003;Zhu et al 2004;Qian et al 2006) and drought (Gong et al 2005;Li et al 2007). Liang et al (2008) reported that silicon enhanced the resistance against stress in winter wheat by increasing the enzymatic antioxidants activity.…”

Section: Discussionmentioning

confidence: 99%

Physiological response of late sown wheat to exogenous application of silicon

Sattar¹,

Cheema

Abbas³

et al. 2017

Cereal Research Communications

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Late planting of wheat in rice-wheat cropping system is perhaps one of the major factors responsible for low crop yield. The main cause of reduction in yield is due to supra-optimal conditions during the reproductive growth. High temperature during reproductive phase induces changes in water relations, decreases photosynthetic rate, and transpiration rate, stomatal conductance and antioxidative defence system. Silicon (Si), being a beneficial nutrient not only provides significant benefits to plants growth and development but may also mitigate the adversities of high temperature. A field study was conducted at Agronomic Research Area of University of Agriculture; Faisalabad, Pakistan to assess the performance of late sown wheat with the soil applied Si. Experiment was comprised of three sowing dates; 10 th Nov (normal), 10 th Dec (late), 10 th Jan (very late) with two wheat varieties (Sehar-2006 and Faisalabad-2008), and an optimized dose of Si (100 mg per kg soil), applied at different growth stages (control, crown root, booting and heading). Results indicated that 100 mg Si per kg soil at heading stage offset the negative impact of high temperature and induced heat tolerance in late sown wheat. Silicon application improved 34% relative water contents (RWC), 30% water potential, 26% osmotic potential, 23% turgor potential and 21% photosynthetic rate, and 32% transpiration rate and 20% stomatal conductance in wheat flag leaf than control treatment. Further it was observed that Si application preventing the oxidative membrane damage due to enhanced activity of antioxidant enzymes, i.e. 35% superoxide dismutase (SOD) and 38% catalase (CAT). In conclusion results of this field study demonstrated that soil applied Si (100 mg per kg soil) at heading stage enhanced all physiological attributes of wheat flag leaf. Which in turn ameliorated the adverse effects of high temperature in late sown wheat. Study depicted that Si can be used as a potential nutrient in order to mitigate the losses induced by high temperature stress.

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Section: Discussionmentioning

confidence: 99%

Physiological response of late sown wheat to exogenous application of silicon

Sattar¹,

Cheema

Abbas³

et al. 2017

Cereal Research Communications

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“…Si application to crops has been reported to enhance their tolerance of multiple stresses (Guntzer, 2011), including pests and pathogens (Dallagnol et al, 2012), salt and water stress (Liu et al, 2014). However, the effects of Si on plant resistance to cold stress and the underlying mechanisms have not been well identified (Liang et al, 2008). It has been reported that the protective role of Si in plants exposed to cold-stress conditions in most cases has been attributed to increase water use efficiency and antioxidant activity in winter wheat (Liang et al, 2008) and cucumber leaves (Liu et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effect of foliar-applied silicon on photochemistry, antioxidant capacity and growth in maize plants subjected to chilling stress

Habibi

2016

AAS

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Low temperature is one of the major adverse climatic factors that suppress plant growth and sustainable agricultural development. In these climate conditions, silicon (Si) can mitigate various abiotic stresses including low temperature. In this study, the roles of foliar-applied silicon (10 mM potassium metasilicate) in enhancing tolerance to chilling stress were investigated in maize (Zea mays 'Fajr') plants. The low temperature stress caused significant reduction of plant growth and relative water content; however, Si ameliorated these effects. Si supply in maize exhibited a significantly positive effect on accumulation of free amino acids, and reduced the necrotic leaf area. The decrease in maximum quantum yield of PSII (F v /F m ) was reversible during recovery, but not in the non-Si-treated leaves. This can be explained by enhancement of protective pigments; carotenoid and anthocyanin leading to the protection of PSII from damage. Additionally, analysis of OJIP transients revealed that Si reduced cold damaging effect on performance index (PI abs ) and F v /F m through improvement of excitation energy trapping (TR 0 /CS) and electron transport (ET 0 /CS) per excited crosssection of leaf. The malondialdehyde (MDA) concentration, which was significantly increased under chilling stress, was decreased by Si. The reduced glutathione and ascorbate concentrations were higher in Si-treated plants as compared to those without application of Si under chilling stress. These results indicated that Si could enhance the chilling stress tolerance of maize plants through improving the biomass accumulation, maintaining a high level of glutathione, ascorbic acid, protein, protective pigments, and enhancing the photochemical reactions. This study also suggests that the foliar-applied Si increases recovery ability from chilling injury. Nizka temperatura je eden izmed glavnih neugodnih klimatskih dejavnikov, ki zavira rast rastlin in trajnostni razvoj kmetijstva.V takšnih klimatskih razmerah lahko silicij oblaži abiotski stress vključno z učinki nizke temperature. V tej raziskavi je bila preučevana vloga foliarnega dodajanja Si (10 mM kalijevega metasilikata) pri povečevanju odpornosti koruze (Zea mays 'Fajr') na hladni stres. Stres zaradi nizkih temperature je značilno zmanjšal rast in vsebnost vode v rastlinah, kar je dodajanje Si oblažilo. Dodatek silicija je sprožil v koruzi značilne pozitivne učinke v kopičenju prostih amino kislin in v zmanjšanju nekrotičnosti listov. Zmanjšanje v fotokemični učinkovitosti PS II (F v /F m ) je bilo povratno med okrevanjem, vendar ne pri rastlinah, ki niso bile tretirane s silicijem. To bi lahko razložili s povečanjem vsebnosti zaščitnih pigmentov karotenoidov in antocianinov, kar vodi v zaščito PSII pred poškodbami. Dodatno so analize prehodne fluorescence klorofila a (OJIP) odkrile, da je dodatek Si zmanjšal učinek poškodb zaradi hlada na fotosintetski elektronski transport (PI abs in F v /F m ) preko boljšega prestrezanja ekscitacijske energije (TR 0 /CS) in boljšega elektronskeg...

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“…The mechanisms underlying silicon's capacity to increase stress resistance are still poorly understood. It has been reported that Si causes an improvement of water use efficiency and stimulation of antioxidative defense system in winter wheat (Liang et al, 2008), Paspalum vaginatum (He et al, 2010) and cucumber leaves (Liu et al 2009). Increase in production of antioxidants and decline of ROS generation mediated by Si causes reduction of photo-oxidative damage, maintenance of chloroplast membranes integrity and thus enhancement of plants stress tolerance (Liang et al, 2008;Waraich et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Exogenous silicon leads to increased antioxidant capacity in freezing-stressed pistachio leaves

Habibi

2015

AAS

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Freezing stress limits photosynthesis and growth of plants. This may be attributed to the enhancement of freezingassociated oxidative damage. In this study, we followed precisely changes in the extent of lipid peroxidation and oxidative damage in leaves of pistachio (Pistacia vera 'Ahmadaghaii') plants exposed to foliar-applied silicon (Si) under freezing stress. The foliar-applied Si decreased significantly damaging effects of cold on relative water content (RWC), accompanied by an increase in shoot fresh mass (SFM). In addition, pre-Si treatment caused a significant reduction of the leaf area lost by freezing. There was a remarkable increase in phenylalanine ammonia-lyase (PAL) activity during recovery. Since leaf phenolic content was not affected by supplementary Si, the possibility that exogenously applied Si directly influences the activity of PAL seems thin. In the present work, freezing stress caused great membrane damage, as assessed by lipid peroxidation, but Si application significantly reduced the membrane damage because of an efficient scavenging by superoxide dismutase (SOD) and peroxidase (POD). Under freezing, despite the increasing POD activity, Si-supplied plants accumulated the highest levels of hydrogen peroxide (H 2 O 2 ) may act as a signal for recovery ability from freezing injury. A positive correlation was found between the concentration of malondialdehyde (MDA) and the percentage of necrotic leaf area. This study suggests that the possible mechanisms for Si enhanced freezing resistance may be attributed to the higher antioxidant defense activity and lower lipid peroxidation through leaf water retention, in addition to its role as a mere physical barrier.Key words: antioxidant enzymes, cold stress, Evans dye, hydrogen peroxide, phenylalanine ammonialyase, Pistacia vera, malondialdehyde, relative water content IZVLEČEK TRETIRANJE LISTOV PISTACIJE (Pistacia vera 'Ahmadaghaii') S SILICIJEM POVEČA NJIHOVO ANTIOKSIDATIVNO SPOSOBNOST V MRAZNEM STRESUMrazni stres omejuje fotosintezo in rast rastlin, kar lahko pripišemo povečanju oksidativnih poškodb zaradi zmrzovanja. V raziskavi sta bili spremljani peroksidacija lipidov in oksidativne poškodbe listov pistacije (Pistacia vera 'Ahmadaghaii') izpostavljenih mraznem stresu in foliarnem tretmaju s silicijem (Si). Foliarna uporaba silicija je značilno zmanjšala učinke mraza na ravni relativne vsebnosti vode (RWC), kar je povzročilo povečanje sveže mase poganjkov (SFM). Dodatno je predtretiranje s Si povzročilo značilno zmanjšanje izgube listne površine zaradi zmrzovana. Med okrevanjem po mraznem stresu je bila opazno povečana aktivnost fenilalanin amonik-liaze (PAL). Zaradi nespremenjene vsebnosti fenolov v listih po aplikaciji Si je maloverjetno, da bi foliarno dodani Si neposredno vplival na aktivnost PAL. Mrazni stres je povzročil velike poškodbe membran, ki so bile ocenjene s peroksidacijo lipidov, a jih je uporaba Si značilno zmanjšala zaradi učinkovitega antioksidativnega delovanja superoksid dismutaze (SOD) in peroksidaze (POD). Kljub ...

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Role of silicon in enhancing resistance to freezing stress in two contrasting winter wheat cultivars

Cited by 145 publications

References 33 publications

Physiological response of late sown wheat to exogenous application of silicon

Physiological response of late sown wheat to exogenous application of silicon

Effect of foliar-applied silicon on photochemistry, antioxidant capacity and growth in maize plants subjected to chilling stress

Exogenous silicon leads to increased antioxidant capacity in freezing-stressed pistachio leaves

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