Silicon Application Enhances the Photosynthetic Pigments and Phenolic/Flavonoid Content by Modulating the Phenylpropanoid Pathway in Common Buckwheat under Aluminium Stress

Dar, Fayaz Ahmad; Tahir, Inayatullah; Hakeem, Khalid Rehman; Rehman, Reiaz Ul

doi:10.1007/s12633-021-01501-w

Cited by 17 publications

(6 citation statements)

References 69 publications

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“…In this study, we demonstrate that Si supplementation improving leaf Chl a , Chl b , Cars, and Anths and this enhancing may be attributed to that Si is improved leaf area 10 , 46 . Similar findings with Si supplementation in enhancing photosynthetic pigment biosynthesis and promoting positive impact on photosynthesis were reported in cowpea plants under Al toxicity 40 and buckwheat 48 . A possible explanation for these increases in photosynthetic pigments by Si in sugarcane under Al toxicity may be related to the important role that Si plays in plant mineral nutrition, especially in increasing the uptake and translocation of Fe and Mg 10 .…”

Section: Discussionsupporting

confidence: 82%

“…Similarly, Si supplementation in rice plants provided better leaf architecture, allowing better light absorb and increasing photosynthetic rate 37 . The beneficial effects of Si on increasing pigment content under Al conditions were reporter in wheat 48 and watermelon plants 38 . Increasing chlorophyll biosynthesis is another mechanism whereby Si improving K + uptake, increasing chloroplast number per cell, preserved chloroplast ultrastructure, or sustained chlorophyll stability by accelerated ROS-scavenging activity 50 .…”

Section: Discussionmentioning

confidence: 99%

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Silicon attenuates aluminum toxicity in sugarcane plants by modifying growth, roots morphoanatomy, photosynthetic pigments, and gas exchange parameters

da Silveira Sousa Junior,

Hurtado,

de Cassia Alves

et al. 2024

Sci Rep

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Aluminum (Al) inhibits growth and limits plant productivity in acidic soils. An important strategy to increase Al tolerance is the use of silicon (Si) nutrition. Thus, the aim of this study was to evaluate the interactive role of Si in increasing the growth, physiological and morphoanatomy responses of sugarcane plants under Al toxicity. A 4 × 2 factorial scheme in a completely randomized design was used to study the impact of Si (2 mM) on attenuating Al toxicity (0, 10, 15 and 20 mg L−1, as Al2(SO4)3·18H2O) in sugarcane seedlings. After 45 days, Al toxicity affected sugarcane growth by increasing Al uptake and accumulation, modifying root growth, thickness, and morphoanatomy, and decreasing pigment content, gas exchange parameters, and the number of adaxial and abaxial stomata. However, Si attenuated Al toxicity in the sugarcane seedlings by limiting Al uptake and transport to the shoots, causing positive changes in root morphoanatomy, higher pigment content, improving gas exchange parameters, thereby increased growth. Furthermore, cultivar ‘CTC9003’ showed beneficial impacts from Si supplementation than ‘CTC9002’, especially under Al toxicity. The findings of this study suggest that Si plays a notable role in improving anatomical and physiological aspects, particularly the growth of sugarcane seedlings under Al toxicity.

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Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Silicon attenuates aluminum toxicity in sugarcane plants by modifying growth, roots morphoanatomy, photosynthetic pigments, and gas exchange parameters

da Silveira Sousa Junior,

Hurtado,

de Cassia Alves

et al. 2024

Sci Rep

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“…Similar findings were observed by Pirooz et al [71] in terms of Si and NO-mediated increase in phenolics and flavonoids in Salvia officinalis under Cu stress. The stimulation of phenylpropanoid pathway could be the reason for the Si-mediated increase in the metabolites concentration under As stress as described by Dar et al [72] in Fagopyrum esculentum under Al stress. Flavonoid concentration was increased by the application of Si NPs to coriander plants under Pb stress to improve the plant's tolerance against metal stress [73].…”

Section: Discussionmentioning

confidence: 80%

Silicon and Nitric Oxide-Mediated Regulation of Growth Attributes, Metabolites and Antioxidant Defense System of Radish ( L.) under Arsenic Stress

Bhardwaj¹,

Verma²,

Raza³

et al. 2023

Phyton

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Arsenic (As) contaminated food chains have emerged as a serious public concern for humans and animals and are known to affect the cultivation of edible crops throughout the world. Therefore, the present study was designed to investigate the individual as well as the combined effects of exogenous silicon (Si) and sodium nitroprusside (SNP), a nitric oxide (NO) donor, on plant growth, metabolites, and antioxidant defense systems of radish (Raphanus sativus L.) plants under three different concentrations of As stress, i.e., 0.3, 0.5, and 0.7 mM in a pot experiment. The results showed that As stress reduced the growth parameters of radish plants by increasing the level of oxidative stress markers, i.e., malondialdehyde and hydrogen peroxide. However, foliar application of Si (2 mM) and pretreatment with SNP (100 µM) alone as well as in combination with Si improved the plant growth parameters, i.e., root length, fresh and dry weight of plants under As stress. Furthermore, As stress also reduced protein, and metabolites contents (flavonoids, phenolic and anthocyanin). Activities of antioxidative enzymes such as catalase (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (POD), and polyphenol oxidase (PPO), as well as the content of non-enzymatic antioxidants (glutathione and ascorbic acid) decreased under As stress. In most of the parameters in radish, As III concentration showed maximum reduction, as compared to As I and II concentrations. However, the individual and combined application of Si and NO significantly alleviated the As-mediated oxidative stress in radish plants by increasing the protein, and metabolites content. Enhancement in the activities of CAT, APX, POD and PPO enzymes were recorded. Contents of glutathione and ascorbic acid were also enhanced in response to co-application of Si and NO under As stress. Results obtained were more pronounced when Si and NO were applied in combination under As stress, as compared to their individual application. In short, the current study highlights that Si and NO synergistically regulate plant growth through lowering the As-mediated oxidative stress by upregulating the metabolites content, activity of antioxidative enzymes and non-enzymatic antioxidants in radish plants.

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“…Phenylpropanoids originate from phenylalanine and can be transformed into various phenolic compounds, lignins, and flavonoids through interactions with several enzymes [59]. Lignin forms the cell wall structure, while phenols and flavonoids, acting as peroxidase (POD) within plant cells, can convert H 2 O 2 into H 2 O, thus reducing oxidative stress [60][61][62][63]. The contents of phenols and flavonoids increased in environments in which oxidative stress occurred, such as in drought and cold stress conditions [64,65].…”

Section: Effect Of Exogenous Ethanol Treatment In Plants On Secondary...mentioning

confidence: 99%

Effects of Exogenous Ethanol Treatment in Nutrient Solution on Growth and Secondary Metabolite Contents of Three Herb Species in an Indoor Vertical Farming System

Shin,

Lee,

Hahm

et al. 2023

Plants

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This study aimed to explore the possibility of exogenous ethanol treatment as a technology to regulate the growth and the synthesis of secondary metabolites in herbaceous plants. After transplantation, sweet basil, Korean mint, and sweet wormwood were cultivated in a controlled vertical farming system and consistently exposed to exogenous ethanol at concentrations of 0, 0.5, 1, 2, 4, and 8 mM. Their growth parameters, antioxidant activity, and secondary metabolite contents were Everything is fine. measured to investigate the effects of the exogenous ethanol treatment on the three plants. The low-concentration ethanol treatments increased the shoot dry weight of the sweet basil and sweet wormwood compared to that of the control. As the ethanol concentration increased, the shoot fresh weight and leaf area in the sweet basil and Korean mint decreased compared to those of the control (0 mM). The DPPH (2,2-Diphenyl-1-picrylhydrazyl) radical scavenging activity and total phenolic content of the three plants increased with the ethanol concentration, while the total flavonoid content did not demonstrate a significant trend. The chlorophyll and carotenoids of the basil showed no apparent concentration-dependent trends; however, the chlorophyll and carotenoids of the Korean mint and sweet wormwood decreased with high ethanol concentrations. Moreover, the antioxidant enzyme activity increased with high ethanol concentrations, indicating that high ethanol concentrations induce oxidative stress in plants.

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Silicon Application Enhances the Photosynthetic Pigments and Phenolic/Flavonoid Content by Modulating the Phenylpropanoid Pathway in Common Buckwheat under Aluminium Stress

Cited by 17 publications

References 69 publications

Silicon attenuates aluminum toxicity in sugarcane plants by modifying growth, roots morphoanatomy, photosynthetic pigments, and gas exchange parameters

Silicon attenuates aluminum toxicity in sugarcane plants by modifying growth, roots morphoanatomy, photosynthetic pigments, and gas exchange parameters

Silicon and Nitric Oxide-Mediated Regulation of Growth Attributes, Metabolites and Antioxidant Defense System of Radish ( L.) under Arsenic Stress

Effects of Exogenous Ethanol Treatment in Nutrient Solution on Growth and Secondary Metabolite Contents of Three Herb Species in an Indoor Vertical Farming System

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