Role of Silicon and Salicylic Acid in the Mitigation of Nitrogen Deficiency Stress in Rice Plants

Deus, Angélica Cristina Fernandes; Prado, Renato de Mello; Alvarez, Rita de Cássia Félix; Oliveira, Raimundo Leonardo Lima de; Felisberto, Guilherme

doi:10.1007/s12633-019-00195-5

Cited by 44 publications

(28 citation statements)

References 42 publications

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“…Further research on the cross-talk between Si and N has also compared the sole or combined effect of Si and salicylic acid under N deficiency in rice. It was shown that N-deprived rice plants only benefit from Si when Si was solely sprayed to the leaves in which the carbon status eventually increased the lignin synthesis, which overall enhanced the yield [ 35 ]. This study lacks microscopic data and did not represent lignification at casparian strip level and concluded based on the lignin content in the tissue; however, it opens a new way to study in detail the role of Si in nutrient stresses induced suberization in casparian strips—cell wall [ 36 ].…”

Section: Si and Macro-nutrient Deficiencymentioning

confidence: 99%

“…Their findings revealed that suberization is delayed upon germination in Fe-, Mn-, and Zn-deficient conditions and suberin lamellae deposition is highly plastic and responds to different nutritional stresses. Meanwhile, Fleck et al, [ 35 ] showed the function of Si in promoting the casparian band due to decrease in esterified phenolic compounds in both Si-accumulating and Si-excluding species. Therefore, it would be interesting to further explore this within and across species.…”

Section: Si and Micro-nutrient Deficiency Or Heavy Metal Toxicitymentioning

confidence: 99%

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The Regulatory Role of Silicon in Mitigating Plant Nutritional Stresses

Ali¹,

Réthoré²,

Yvin³

et al. 2020

Plants

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It has been long recognized that silicon (Si) plays important roles in plant productivity by improving mineral nutrition deficiencies. Despite the fact that Si is considered as ‘quasi–essential’, the positive effect of Si has mostly been described in resistance to biotic and tolerance to abiotic stresses. During the last decade, much effort has been aimed at linking the positive effects of Si under nutrient deficiency or heavy metal toxicity (HM). These studies highlight the positive effect of Si on biomass production, by maintaining photosynthetic machinery, decreasing transpiration rate and stomatal conductance, and regulating uptake and root to shoot translocation of nutrients as well as reducing oxidative stress. The mechanisms of these inputs and the processes driving the alterations in plant adaptation to nutritional stress are, however, largely unknown. In this review, we focus on the interaction of Si and macronutrient (MaN) deficiencies or micro-nutrient (MiN) deficiency, summarizing the current knowledge in numerous research fields that can improve our understanding of the mechanisms underpinning this cross-talk. To this end, we discuss the gap in Si nutrition and propose a working model to explain the responses of individual MaN or MiN disorders and their mutual responses to Si supplementation.

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Section: Si and Macro-nutrient Deficiencymentioning

confidence: 99%

Section: Si and Micro-nutrient Deficiency Or Heavy Metal Toxicitymentioning

confidence: 99%

The Regulatory Role of Silicon in Mitigating Plant Nutritional Stresses

Ali¹,

Réthoré²,

Yvin³

et al. 2020

Plants

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“…As a result, increasing doses of Si can alter the stoichiometric composition of plants and, in turn, improve their physiological aspects, leading to increased growth. Recent investigations have found that Si application can change the stoichiometric ratios in wheat 23 and rice leaves 25 , 26 .…”

Section: Introductionmentioning

confidence: 99%

Silicon changes C:N:P stoichiometry of sugarcane and its consequences for photosynthesis, biomass partitioning and plant growth

Frazão

Prado

Rossatto

2020

Sci Rep

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Silicon (Si) application has improved yield and stress tolerance in sugarcane crops. In this respect, C:N:P stoichiometry makes it possible to identify flows and interaction between elements in plants and their relationship with growth. However, few studies have investigated the influence of Si on physiological variables and C:N:P stoichiometry in sugarcane. As such, this study aimed to assess the effect of increasing Si concentrations on the growth and stoichiometric composition of sugarcane plants in the early growth stage. The experiment was conducted in pots, using four Si concentrations (0, 0.8, 1.6 and 3.2 mM). Biomass production, the concentration and accumulation of C, N, P and Si as well as the relationship between them were assessed. Silicon application increased biomass production, the rate of photosynthesis, instantaneous carboxylation efficiency and C, N, P and Si accumulation, in addition to altering stoichiometric ratios (C:N, C:P, N:P and C:Si) in different parts of the plants. The decline in C concentration associated with greater N and P absorption indicates that Si favoured physiological processes, which is reflected in biomass production. Our results demonstrate that Si supply improved carbon use efficiency, directly influencing sugarcane yield as well as C and nutrient cycling.

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“…SA has also been implicated in plant nutrition and yield [40][41][42]. Studies in rice show that foliar application of SA did not mitigate the negative effect of N starvation stress but reduces N content [42]. Our data suggest a link between SA responses and the plant response to N starvation.…”

Section: Discussionmentioning

confidence: 56%

“…Several reports have revealed roles for SA in plant responses to abiotic stresses such as drought, chilling, heavy metal toxicity, heat, and osmotic stress [39], leading to the proposal of SA as a "health-supervisor hormone" for plants. SA has also been implicated in plant nutrition and yield [40][41][42]. Studies in rice show that foliar application of SA did not mitigate the negative effect of N starvation stress but reduces N content [42].…”

Section: Discussionmentioning

confidence: 99%

Alternative Polyadenylation and Salicylic Acid Modulate Root Responses to Low Nitrogen Availability

Conesa

Saéz²,

Navarro-Neila

et al. 2020

Plants

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Nitrogen (N) is probably the most important macronutrient and its scarcity limits plant growth, development and fitness. N starvation response has been largely studied by transcriptomic analyses, but little is known about the role of alternative polyadenylation (APA) in such response. In this work, we show that N starvation modifies poly(A) usage in a large number of transcripts, some of them mediated by FIP1, a component of the polyadenylation machinery. Interestingly, the number of mRNAs isoforms with poly(A) tags located in protein-coding regions or 5′-UTRs significantly increases in response to N starvation. The set of genes affected by APA in response to N deficiency is enriched in N-metabolism, oxidation-reduction processes, response to stresses, and hormone responses, among others. A hormone profile analysis shows that the levels of salicylic acid (SA), a phytohormone that reduces nitrate accumulation and root growth, increase significantly upon N starvation. Meta-analyses of APA-affected and fip1-2-deregulated genes indicate a connection between the nitrogen starvation response and salicylic acid (SA) signaling. Genetic analyses show that SA may be important for preventing the overgrowth of the root system in low N environments. This work provides new insights on how plants interconnect different pathways, such as defense-related hormonal signaling and the regulation of genomic information by APA, to fine-tune the response to low N availability.

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Role of Silicon and Salicylic Acid in the Mitigation of Nitrogen Deficiency Stress in Rice Plants

Cited by 44 publications

References 42 publications

The Regulatory Role of Silicon in Mitigating Plant Nutritional Stresses

The Regulatory Role of Silicon in Mitigating Plant Nutritional Stresses

Silicon changes C:N:P stoichiometry of sugarcane and its consequences for photosynthesis, biomass partitioning and plant growth

Alternative Polyadenylation and Salicylic Acid Modulate Root Responses to Low Nitrogen Availability

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