Silicon Supplementation as a Promising Approach to Induce Thermotolerance in Plants: Current Understanding and Future Perspectives

Bishnoi, Alka; Jangir, Pooja; Shekhawat, Pooja Kanwar; Ram, Hasthi; Soni, Praveen

doi:10.1007/s42729-022-00914-9

Cited by 34 publications

(8 citation statements)

References 146 publications

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“…Silicon can help plants tolerate high temperature stress [42][43][44] . Numerous processes have been suggested to explain this bene cial effect 19,21 . The presence of silici ed structures in leaf epidermis signi cantly could reduce heat load and prevent ultraviolet radiation through effective emission of thermal energy 6,20,45 .…”

Section: Discussionmentioning

confidence: 99%

“…The deposition of Si in the cell walls of leaf epidermis not only enhances the thermal stability of cell membranes and cell walls, but also cools the leaves through e cient mid-infrared heat emission 19,20 . As such, Si could play a key role in helping plants resisting high temperature stress 21 , and therefore could have been selected during warm geological periods. Furthermore, lab experiments show that Si is highly plastic in response to increased temperature 18,22,23 , although this could also be attributed to increased transpiration accelerating passive Si absorption 24,25 .…”

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confidence: 99%

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Convergent evidence for temperature-dependent emergence of silicification in terrestrial plants

Liang,

Pang,

Tombeur

et al. 2024

Preprint

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While research on terrestrial silicon (Si) biogeochemistry and its beneficial effects for plants has received significant attention in last decades, the reasons for the emergence of high-Si taxa remain unclear. Although the “arms race” hypothesis (i.e. increased silicification through co-evolution with mammalian grazers) has received some support, other studies have pointed to the role of environmental factors, such as high temperatures and low atmospheric CO2 levels, which could have favored the emergence of silicification. Here, we combine experimentation and analysis of existing databases to test the role of temperature on the expression and emergence of silicification in terrestrial plants. We first show through experimental manipulations of rice that Si is beneficial for growth under high temperature stress, but harmful under low temperature. We then found that, globally, the average temperature of the distribution of high-Si plants was 1.2°C higher than that of low-Si plants. Moreover, within China, a notable positive correlation emerged between the concentrations of phytoliths in wheat and rice and air temperature. From an evolutionary perspective, 65–77% of high-Si families (> 10 mg Si g− 1 DW) originated during warm geological periods, while 57–75% of low-Si families (< 1 mg Si g− 1 DW) originated during cold geological periods. On average, Earth's temperatures during the emergence of high-Si families were 3°C higher than those during the emergence of low-Si families. A correlation was also observed between the divergence of proteins related to Si transport (Lsi1, Lsi2, Lsi3, and Lsi6) and historical climatic variability. Together, cumulative evidence suggests that plant Si variation is closely related to global and long-term climate change, with potential repercussions for global Si and C biogeochemical cycles.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Convergent evidence for temperature-dependent emergence of silicification in terrestrial plants

Liang,

Pang,

Tombeur

et al. 2024

Preprint

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“…Silicon is considered a non-essential element for plant nutrition [3], and Si-based biostimulants are showing optimal results in terms of the plant growth and development of many species [4][5][6][7][8]. Numerous studies have shown that Si increases plant tolerance to various types of biotic [9] and abiotic stresses that cause a decrease in the average yield and production of major crops by more than 50% each year [10]. Specifically, its effectiveness has been highlighted in situations of stress caused by water stress [11], temperature [10], nutrient imbalance [12], and heavy metal toxicity [13].…”

Section: Introductionmentioning

confidence: 99%

“…Numerous studies have shown that Si increases plant tolerance to various types of biotic [9] and abiotic stresses that cause a decrease in the average yield and production of major crops by more than 50% each year [10]. Specifically, its effectiveness has been highlighted in situations of stress caused by water stress [11], temperature [10], nutrient imbalance [12], and heavy metal toxicity [13]. However, one of the most severe impacts on crops worldwide is caused by salt stress due to its high impact, significantly damaging plants, limiting their growth, productivity and crop quality worldwide [11,14,15].…”

Section: Introductionmentioning

confidence: 99%

“…Considered a moderately salt-tolerant species, it experiences a significant decline in growth and yield under high salinity levels as it is glycophytic [27]. To counteract this effect, it has been demonstrated that Si fertilization in the form of diatomite [10,28], Na 2 SiO 3 [10,23,24,29,30], nano-silicon [22,29], Na 2 Si 3 O 7 [31], Na 2 SiO 3 •9H 2 O [32] and H 4 SiO 4 [33] has shown positive responses associated with increased production, increased post-harvest quality, and a decrease in parameters related to salt stress. Silicon has also been reported to improve tomato growth and yield in soilless cultivation systems, the most widely used form of tomato production in southern Europe.…”

Section: Introductionmentioning

confidence: 99%

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Enhancing Salt Stress Tolerance in Tomato (Solanum lycopersicum L.) through Silicon Application in Roots

Ferrández-Gómez,

Jordá,

Cerdán

et al. 2024

Plants

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Soil salinization poses a significant threat to agricultural productivity, necessitating innovative agronomic strategies to mitigate its impact. This study focuses on improving salt stress resistance in tomato plants through the application of silicon (Si) in roots. A greenhouse experiment was carried out under normal conditions (control, and 1 and 4 mM Si) and under salinity stress (salt control, and 1 and 4 mM Si). Various parameters were analyzed in leaves and roots. Under normal conditions, tomato plants grown in non-saline conditions exhibited some toxicity when exposed to Na2SiO3. As for the experiments under salt stress conditions, Si mitigated oxidative damage, preserving root cell membrane integrity. The concentration of malondialdehyde was reduced by 69.5%, that of proline was reduced by 56.4% and there was a 57.6% decrease in catalase activity for tomato plants treated with 1 mM Si under salt stress. Furthermore, Fe uptake and distribution, under salt conditions, increased from 91 to 123 mg kg−1, the same concentration as that obtained for the normal control. In all cases, the lower dose produced better results under normal conditions than the 4 mM dose. In summary, this research provides a potential application of Si in non-fertigated crop systems through a radicular pathway.

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Silicon: The Only Element in Plant Nutrition with a Mitigating Effect on Multiple Stresses

de Mello Prado,

Alves,

de Aquino Vidal Lacerda Soares

2024

Sustainable Plant Nutrition in a Changing World

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Silicon Supplementation as a Promising Approach to Induce Thermotolerance in Plants: Current Understanding and Future Perspectives

Cited by 34 publications

References 146 publications

Convergent evidence for temperature-dependent emergence of silicification in terrestrial plants

Convergent evidence for temperature-dependent emergence of silicification in terrestrial plants

Enhancing Salt Stress Tolerance in Tomato (Solanum lycopersicum L.) through Silicon Application in Roots

Silicon: The Only Element in Plant Nutrition with a Mitigating Effect on Multiple Stresses

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