Silicon availability and response of rice and wheat to silicon in calcareous soils

Liang, Yongchao; Tong, Sheng; Li, Fu Jun; Feng, Ya Jun

doi:10.1080/00103629409369189

Cited by 119 publications

(102 citation statements)

References 15 publications

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“…Although silicon (Si) has not been listed among the essential elements for higher plants, it is well known that Si is beneficial for healthy growth and development of many plant species, especially graminaceous plants such as rice (Oryza sativa L.) (Lian, 1976;Liang et al, 1994;Epstein, 1994Epstein, , 1999. Si is also well known to be effective in alleviating abiotic stresses in higher plants (Hodson and Evans, 1995;Rogalla and Römheld, 2002;Liang et al, 2003Liang et al, , 2005.…”

Section: Introductionmentioning

confidence: 99%

Is the effect of silicon on rice uptake of arsenate (AsV) related to internal silicon concentrations, iron plaque and phosphate nutrition?

Guo

Zhu

Liu

et al. 2007

Environmental Pollution

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Arsenate uptake by rice seedlings is affected by both Si (internal and external) and iron plaque on root surface. AbstractSolution culture experiments were conducted to investigate the effects of silicon (Si) on arsenate (As V ) uptake by rice. The addition of Si to the pretreatment or uptake solution significantly decreased shoot and root As concentrations (P < 0.001 and P < 0.05). The presence of Si in the pretreatment or uptake solution also significantly decreased shoot P concentrations (P < 0.001). The data demonstrated that both internal and external Si inhibited the uptake of As and P. Results of As uptake kinetics showed that the mechanism of the effect of Si on arsenate uptake is not caused by direct competition for active sites of transporters with As. The effect of Si on As uptake was not entirely mediated through the effect of Si on P uptake. Although the addition of Si to pretreatment solutions still significantly decreased shoot and root As concentrations, the extent of reduction became smaller when rice roots were coated with iron plaque.

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Section: Introductionmentioning

confidence: 99%

Is the effect of silicon on rice uptake of arsenate (AsV) related to internal silicon concentrations, iron plaque and phosphate nutrition?

Guo

Zhu

Liu

et al. 2007

Environmental Pollution

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“…It is generally known that the application of Si is beneficial to the growth of rice plants both in the field and under glasshouse conditions (Liang et al, 1994;Takahashi, 1989, 1990;Okuda and Takahashi, 1964). Our results confirm this in that addition of Si to the nutrient solution significantly increased shoot dry weight (Table 1, P ¼ 0.001).…”

Section: Effect Of Si and As On Plant Biomassmentioning

confidence: 99%

“…Since Sommer (1926) demonstrated the favorable effect of Si on rice growth, intensive studies on the essentiality of Si for plants have been undertaken throughout the world. Although the essentiality of Si for plant growth has not yet been established (Epstein, 1994), there is sufficient evidence to suggest that it is an agronomically essential nutrient for achieving and maintaining high yields of rice (Lian, 1976;Liang et al, 1994). Silicon enhances the growth of various (mostly monocotyledonous) plants by providing rigidity to plant tissues and promoting photosynthesis (Cheng, 1982;Epstein, 1994).…”

Section: Introductionmentioning

confidence: 99%

Effect of silicate on the growth and arsenate uptake by rice (Oryza sativa L.) seedlings in solution culture

et al. 2005

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A solution culture experiment was conducted to investigate the effect of silicate on the yield and arsenate uptake by rice. Rice seedlings (Oryza sativa L. cv. Weiyou 77) were cultured in modified Hoagland nutrient solution containing three arsenate levels (0, 0.5 and 1.0 mg L )1 As) and four silicate levels (0, 14, 28 and 56 mg L )1 Si). Addition of Si significantly increased shoot dry weight (P ¼ 0.001) but had little effect on root dry weight (P ¼ 0.43). Addition of As had no significant effect on shoot dry weight (P ¼ 0.43) but significantly increased root dry weight (P ¼ 0.01). Silicon concentrations in shoots and roots increased proportionally to increasing amounts of externally supplied Si (P < 0.001). The presence of As in the nutrient solution had little effect on shoot Si concentration (P ¼ 0.16) but significantly decreased root Si concentration (P ¼ 0.005). Increasing external Si concentration significantly decreased shoot and root As concentrations and total As uptake by rice seedlings (P < 0.001). In addition, Si significantly decreased shoot P concentration and shoot P uptake (P < 0.001). The data clearly demonstrate a beneficial effect of Si on the growth of rice seedlings. Addition of Si to the growth medium also inhibited the uptake of arsenate and phosphate by the rice seedlings.Abbreviation: ICP-OES -inductively coupled plasma-optical emission spectrometer

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“…In two rice cultivars grown in low-Si soils, Deren et al (1994) reported an increment of up to 33 % in the production of plant parts due to fertilization with 2500 mg dm -3 calcium silicate. In wheat, Liang et al (1994) observed a productivity increase of 4-9 % under soil-applied Si. Korndörfer et al (1999) stated that a soil where 0.05 mol L -1 CaCl 2 extracted Si in a range of 6 -8 mg dm -3 indicated a high probability of response to Si application, justifying the inclusion of Si in fertilization to improve crop yields.…”

Section: Resultsmentioning

confidence: 99%

Soil-applied silicon decreases severity of wheat spot blotch on silicon-deficient soils

Júnior

Fontes

Coelho³

et al. 2010

Rev. Bras. Ciênc. Solo

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SUMMARYSpot bloth caused by Bipolaris sorokiniana is an important wheat desease mainly in hot and humid regions. The aim of this study was to evaluate the response of wheat to different sources and modes of Si application, as related to the severity of wheat spot blotch and plant growth, in two Si-deficient Latosols (Oxisols). An greenhouse experiment was arranged in a 2 x 5 factorial completely randomized design, with eight replications. The treatments consisted of two soils (Yellow Latosol and Red Latosol) and five Si supply modes (no Si application; Si applied as calcium silicate and monosilicic acid to the soil; and Si applied as potassium silicate or monosilicic acid to wheat leaves). No significant differences were observed between the two soils. When Si was applied to the soil, regardless the Si source, the disease incubation period, the shoot dry matter yield and the Si content in leaves were greater. Additionally, the final spot blotch severity was lower and the area under the spot blotch disease progress curve and the leaf insertion angle in the plant were smaller. Results of Si foliar application were similar to those observed in the control plants.Index terms: Triticum aestivum L., Bipolaris sorokiniana (Sacc. in Sorok.), plant nutrition, Si.(

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Silicon availability and response of rice and wheat to silicon in calcareous soils

Cited by 119 publications

References 15 publications

Is the effect of silicon on rice uptake of arsenate (AsV) related to internal silicon concentrations, iron plaque and phosphate nutrition?

Is the effect of silicon on rice uptake of arsenate (AsV) related to internal silicon concentrations, iron plaque and phosphate nutrition?

Effect of silicate on the growth and arsenate uptake by rice (Oryza sativa L.) seedlings in solution culture

Soil-applied silicon decreases severity of wheat spot blotch on silicon-deficient soils

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