Silicon Fertilizer Application Promotes Phytolith Accumulation in Rice Plants

Liu, Qin; Tang, Tongtong; Chen, Xiang; Luo, Xia

doi:10.3389/fpls.2019.00425

Cited by 25 publications

(11 citation statements)

References 45 publications

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“…It is necessary to further explore the effects of Moso bamboo litter on the carbon sink of bamboo forest ecosystems to help clarify the relationship between carbon flow between soil and vegetation components, which provides an essential basis for understanding the carbon sink potential of bamboo forest ecosystems ( Hu, 2019 ). Our result is also in good agreement with recent studies, indicating that SiF addition increased phytolith concentration (Si uptake) in wheat ( Liu et al, 2014 ) and rice ( Sun et al, 2019 ; Li et al, 2020a ), as well as bamboo ( Huang et al, 2020 ). Certainly, the different impact magnitude under Si fertilization may be caused by the variations in vegetation types, source of SiF, and soil Si availability ( Li and Delvaux, 2019 ; Huang et al, 2020 ).…”

Section: Discussionsupporting

confidence: 93%

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Effects of Different Management Practices on the Increase in Phytolith-Occluded Carbon in Moso Bamboo Forests

Zhou

Chen

et al. 2020

Front. Plant Sci.

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Phytolith-occluded carbon (PhytOC), a promising long-term biogeochemical carbon sequestration mode, plays a crucial role in the global carbon cycle and the regulation of atmospheric CO2. Previous studies mostly focused on the estimation of the content and storage of PhytOC, while it remains unclear about how the management practices affect the PhytOC content and whether it varies with stand age. Moso bamboo (Phyllostachys heterocycla var. pubescens) has a great potential in carbon sequestration and is rich in PhytOC. Here, we selected four management treatments, including control (CK), compound fertilization (CF), silicon (Si) fertilization (SiF) (monosilicic acid can form phytoliths through silicification), and cut to investigate the variation of phytoliths and PhytOC contents in soil, leaves, and litters, and their storage in Moso bamboo forests. In soil, the SiF fertilizer treatment significantly (P < 0.05) increased phytolith content, PhytOC content, and storage compared to CK, while there were no significant differences between the treatments of CF and cut. In leaf, compared with CK, phytolith content of the second-degree leaves under SiF and the first-degree leaves under cut treatment significantly increased, and the three treatments significantly increased PhytOC storage for leaves with three age classes. In litter, the phytolith and PhytOC contents under the three treatments were not significantly different from that under the CK treatment. The PhytOC storage increased by 19.33% under SiF treatment, but significantly decreased by 40.63% under the CF treatment. For the entire Moso bamboo forest ecosystems, PhytOC storage of all the three management treatments increased compared with CK, with the largest increase by 102% under the SiF treatment. The effects of management practices on the accumulation of PhytOC varied with age. Our study implied that Si fertilization has a greater potential to significantly promote the capacity of sequestration of carbon in Moso bamboo forests.

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Section: Discussionsupporting

confidence: 93%

“…The application of SiF can significantly affect soil PhytOC storage. A recent study ( Sun et al, 2019 ) found that no matter whether the paddy soil was lacking in Si or rich in Si, the application of SiF significantly improved the Si contents of rice organs, such as stem, sheath, leaf, grain, and root. This is consistent with our results.…”

Section: Discussionmentioning

confidence: 99%

Effects of Different Management Practices on the Increase in Phytolith-Occluded Carbon in Moso Bamboo Forests

Zhou

Chen

et al. 2020

Front. Plant Sci.

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“…Additionally, grain yield was increased when Si fertilizer was applied at 450 kg/ha in rice crops, while it was slightly decreased when increasing Si to 600 kg/ha [ 31 ]. In China, applying Si at 600 kg/ha was found to decrease straw dry weight and grain yield in Si-enriched paddy soil [ 32 ]. Thus, the appropriate rate of Si fertilizer for rice crops can be varied according to rice variety and soil fertility conditions.…”

Section: Resultsmentioning

confidence: 99%

Silicon Application Promotes Productivity, Silicon Accumulation and Upregulates Silicon Transporter Gene Expression in Rice

Chaiwong

Pusadee

Jamjod

et al. 2022

Plants

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Rice has been shown to respond positively to Si fertilizer in terms of growth and productivity. The objective of this study was to evaluate the effect of a series of Si application rates on grain yield, Si concentration, and the expression of the OsLsi6 gene among three Thai rice varieties. The varieties CNT1, PTT1, and KDML105 were grown in a pot experiment under six levels of Si (0, 100, 150, 200, 250, and 300 kg Si/ha). Grain yield was the highest at 300 kg Si/ha, being increased by 35%, 53%, and 69% in CNT1, PTT1, and KDML105, respectively, compared with the plants grown without added Si. For Si concentrations in rice plants, rising Si fertilizer application up to 150 kg/ha significantly increased the Si concentration in straw, flag leaf, and husk in all varieties. The Si concentration in all tissues was higher under high Si (300 kg Si/ha). Applying Si fertilizer also increased the expression level of OsLsi6 in both CNT1 and PTT1 varieties. The highest expression level of OsLsi6 was associated with 300 kg Si/ha, being increased by 548% in CNT1 and 326% in PTT1 compared with untreated plants. These results indicate that Si application is an effective way to improve rice yield as well as Si concentration, and that the effect is related to the higher expression of the OsLsi6 gene.

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“…Costa et al [48] indicated that Si fertilization at 0.28 to 0.55 g•pot −1 provided better growth of passion fruit. In addition, Si application stimulated vegetative growth of rice, sugarcane, strawberry, and soybean [4,12,49]. In contrast, applying Si had no significant effect on the growth of Spartina anglica and cowpea [47].…”

Section: Discussionmentioning

confidence: 96%

“…Plants absorb Si from the soil solution in the form of monosilicic acid, also called orthosilicic acid (H4SiO4). On average, plants absorb kg Si•ha −1 [12]. However, the absorption ability of plants differs greatly among species.…”

Section: Introductionmentioning

confidence: 99%

Beneficial Effects of Silicon Fertilizer on Growth and Physiological Responses in Oil Palm

et al. 2022

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Vigorous and well-established nursery seedlings are an important component of sustainable oil palm production. We postulated that Si fertilization at the seedling stage could help to achieve improved performance of oil palm seedlings leading to healthy and vigorous nursery establishment. In this study, we evaluated the growth and physiological responses of oil palm Tenera hybrid seedlings under three Si fertilization treatments and a control including (i) 0 g Ca2SiO4 (T0), (ii) 0.5 g Ca2SiO4 (T1), (iii) 3.5 g Ca2SiO4 (T2), and (iv) 7.0 g Ca2SiO4 (T3) per plant per month. Ca2SiO4 was used as the Si fertilizer source and was applied for four consecutive months. Nondestructive data including stem diameter, plant height, leaf length, photosynthetic rate, leaf angle, and leaf thickness and destructive data including leaf, stem, and root fresh weight and dry weight, as well as chlorophyll a, Si, and nitrogen contents, were recorded before treatment (0 DAT), as well as 60 (60 DAT) and 120 days after treatment (120 DAT). Results indicated that Si fertilization enhanced Si accumulation in oil palm seedlings, and maximum accumulation was observed in the aerial parts especially the leaves with the highest accumulation of 0.89 % dry weight at T3. Higher Si accumulation stimulated the growth of seedlings; a total fresh weight of 834.28 g and a total dry weight of 194.34 g were observed at T3. Chlorophyll a content (0.83 gm−2) and net photosynthetic rate (4.98 µM CO2·m−2·s−1) were also observed at T3. Leaf morphology was not significantly influenced under Si fertilization, whereas the nitrogen content of seedlings was significantly increased. Correlation analysis revealed a highly significant and positive association among Si accumulation, chlorophyll a content, photosynthetic rate, total fresh weight, total dry weight, and nitrogen content of seedlings, indicating that Si fertilization enhanced the performance of these attributes. On the basis of the research evidence, it was concluded that Si fertilization should be considered for improved nutrient management for oil palm seedling and nursery production.

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Silicon Fertilizer Application Promotes Phytolith Accumulation in Rice Plants

Cited by 25 publications

References 45 publications

Effects of Different Management Practices on the Increase in Phytolith-Occluded Carbon in Moso Bamboo Forests

Effects of Different Management Practices on the Increase in Phytolith-Occluded Carbon in Moso Bamboo Forests

Silicon Application Promotes Productivity, Silicon Accumulation and Upregulates Silicon Transporter Gene Expression in Rice

Beneficial Effects of Silicon Fertilizer on Growth and Physiological Responses in Oil Palm

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