Studies concerning the essential nature of aluminum and silicon for plant growth,

Sommer, Anna L.

doi:10.5962/bhl.title.61309

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“…The aluminum accumulates in the protoplasm and particularly in the nuclei of the cortex of roots immersed in a nutrient solution containing aluminum. Such accumulation has been noted in plants sensitive to (14), and others (20) have found small quantities to be beneficial.…”

Section: Introductionmentioning

confidence: 99%

Aluminum Toxicity

McLean¹,

Gilbert²

1928

Plant Physiol.

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Section: Introductionmentioning

confidence: 99%

Aluminum Toxicity

McLean¹,

Gilbert²

1928

Plant Physiol.

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“…Rice is a typical siliciphilous plant and can accumulate concentrations of up to 10% Si in the shoots on a dry matter basis. 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).…”

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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“…Before the 1950s, numerous researches were conducted in the USA to demonstrate whether Si was an essential element for higher plants, but no conclusion was drawn because no convincing evidence was obtained. The earlier investigations showed that Si was a benefi cial or essential element by some plants (Sommer 1926 ;Lipman 1938 ;Raleigh 1939 ). For example, Sommer ( 1926 ) reported that the growth of rice and of millet was improved by the addition of Si to the nutrient solution.…”

Section: Silicon Research In America and Australiamentioning

confidence: 99%

History and Introduction of Silicon Research

Liang

Nikolić

Bélanger

et al. 2015

Silicon in Agriculture

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Although silicon (Si) is not yet listed among the essential elements for the growth of higher plants, it has been well documented to play an important role in providing benefi cial effects on growth and yield, especially in plants under stressful environments. From a practical perspective, the use of slag-based silicate fertilizers in agriculture can be dated back to the Middle Ages in Europe. Over the last decade, the discovery of specifi c Si transporters in rice roots has allowed great progress in the understanding of Si uptake by plants at the molecular level. In the same manner, important advancements have been made in dissecting the molecular mechanisms by which Si enhances plant resistance to fungal and bacterial diseases and insect pest damage. In contrast, more efforts are needed to explain at the molecular level the numerous reports showing Si benefi ts against abiotic stresses. In this chapter, a brief review is presented focusing on the most important historical points and general introduction of worldwide Si research.

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Studies concerning the essential nature of aluminum and silicon for plant growth,

Abstract: Volume 5, No. 2, pp. 57-81, 2 figures in text uwvmsrnr of caufqrn*

Cited by 20 publications

References 0 publications

Aluminum Toxicity

Aluminum Toxicity

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

History and Introduction of Silicon Research

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