Exogenous Silicon and Proline Modulate Osmoprotection and Antioxidant Activity in Cowpea Under Drought Stress

Santos, Anderson Reges dos; Melo, Yuri Lima; Oliveira, Louise Fernandes de; Cavalcante, Igor Enéas; Ferraz, Rener Luciano de Souza; Sá, Francisco Vaniés da Silva; Lacerda, Claudivan Feitosa de; Melo, Alberto Soares de

doi:10.1007/s42729-022-00764-5

Cited by 22 publications

(16 citation statements)

References 34 publications

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“…Proline and amino acids probably contribute to cellular osmotic adjustment, increasing the water potential and stimulating an increase in cellular homeostasis under drought conditions (Avila et al, 2021). Additionally, Si at 2.0 and 4.0 mM activated CAT and SOD activity, respectively, in drought-stressed Novaera plants compared with those stressed in the absence of Si (Figures 11c and 12), suggesting the role of Si in antioxidant defence for scavenging ROS under water deficit (Santos et al, 2022;Silva et al, 2019). All findings demonstrate that multifaceted Si action on plant metabolism counteracts the deleterious effects of water deficit in the Novaera cowpea cultivar.…”

Section: Con Clus Ionmentioning

confidence: 96%

“…In association, osmoregulation via the accumulation of compatible solutes such as proline, sugars and glycine-betaine helps to stabilize membranes and proteins, eliminating free radicals and performing osmotic adjustment (Merwad et al, 2018;Santos et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

“…Plants use mechanisms to protect cellular structures and mitigate the deleterious effects of ROS accumulation (Jales Filho et al, 2023), especially the enzymes superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) (Iqbal et al, 2018; Melo et al, 2022). In association, osmoregulation via the accumulation of compatible solutes such as proline, sugars and glycine‐betaine helps to stabilize membranes and proteins, eliminating free radicals and performing osmotic adjustment (Merwad et al, 2018; Santos et al, 2022). Furthermore, such adjustments can help water status and stimulate plant growth (Liang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies have shown that the supply of silicon (Si) can be a management strategy to reduce damage caused by water deficits in plants (Avila et al, 2021; Patel et al, 2021; Santos et al, 2022; Teixeira et al, 2022; Xu et al, 2022; Zuffo et al, 2022). The beneficial effects of Si in plants under water deficit are related to leaf water status due to the deposition of this element in cell walls, which helps reduce water loss through transpiration (Pei et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Silicon alleviates drought damage by increasing antioxidant and photosynthetic performance in cowpea

Leite

Miranda

Rocha³

et al. 2023

J Agronomy Crop Science

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Water deficits have been considered the most restrictive environmental constraint on agricultural production worldwide. The current study aimed to investigate the role of silicon nutrition (Si) in activating defence mechanisms against drought damage in cowpea cultivars. The experiments were carried out in a randomized block design in a 2 × 2 × 4 factorial scheme, corresponding to two cowpea cultivars (BRS Novaera and BRS Tumucumaque), two water regimes (control well‐irrigated and water deficit) and four Si levels (0, 1.0, 2.0 and 4.0 mM). Plant growth and physiological and biochemical indicators were evaluated 28 days after drought imposition. Drought significantly reduced the photosynthetic pigments (Chl b and Chl total), gas exchanges (net photosynthesis, transpiration and stomatal conductance) and, consequently, all growth parameters of cowpea plants compared with well‐irrigated plants. However, Si at 2.0 mM activated critical responses in the BRS Novaera cultivar under drought, almost recovering plant performance and increasing drought tolerance. The beneficial Si‐induced effects were closely related to increased accumulation of Si, carbohydrates and free amino acids that likely promoted osmoregulation and were associated with an improved antioxidant system composed of proline and the activity of SOD, CAT and APX. These metabolic alterations were sufficient to enable enhanced net photosynthesis and plant growth. In conclusion, Si counteracts the deleterious effects of water deficit by efficiently inducing antioxidant defence and photosynthetic performance in Novaera plants. Si nutrition may constitute a potential strategy to cultivate cowpea plants in water‐scarce areas from arid and semiarid regions.

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Section: Con Clus Ionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Silicon alleviates drought damage by increasing antioxidant and photosynthetic performance in cowpea

Leite

Miranda

Rocha³

et al. 2023

J Agronomy Crop Science

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“…From this perspective, the search for advances in breeding programs aimed at resistance to drought stress in agricultural crops is a path that should be pursued with greater emphasis. Breeding programs have been working with different crops and mechanisms to investigate resistance to drought stress, including gene expression, genetically modified organisms, plant hormones, biostimulants, and the identification of genes that confer resistance in crops such as corn, soybean, cotton, rice, wheat, common bean, sugarcane, and tomato, among others [1,4,[7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Advances in Crop Genetic Improvement to Overcome Drought Stress: Bibliometric and Meta-Analysis

da Silva,

Cassa,

de Melo

et al. 2023

Agriculture

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Plant resistance to drought stress is a parameter that should be studied with more emphasis in the search for higher agricultural yields. In this scenario, research within breeding programs should be directed toward specific mechanisms of action and important agricultural crops in worldwide agribusiness. From this perspective, this study carried out a bibliographic investigation regarding the advances in genetic improvement aimed at drought stress in crops using a hybrid model of analysis of scientific articles. The analysis employed bibliometric parameters for qualitative and quantitative discussion of scientific production and the methodological process of systematic review for the synthesis of the results obtained. The work was divided into four stages: the search for articles in databases, meta-analysis, bibliometric analysis, and systematic analysis. Scientific articles were searched for on the Scopus, Scielo, and Web of Science databases within a 20-year timeframe. Most authors and institutions were from Asian countries, demonstrating the need for global expansion of research on the subject. With regard to the co-occurrence networks between the keywords used in the search, a focus was observed on the following terms: drought resistance, drought stress; drought, and drought tolerance. Evidently, the primary mechanism of tolerance or even resistance studied in breeding programs is associated with the expression of genes and genetically modified organisms that confer resistance to plants. Also, the crops addressed in the research retrieved are highly diverse.

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The Plant Metabolic Changes and the Physiological and Signaling Functions in the Responses to Abiotic Stress

Zhu

Sun

Jadhav

et al. 2023

Methods in Molecular Biology

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Exogenous Silicon and Proline Modulate Osmoprotection and Antioxidant Activity in Cowpea Under Drought Stress

Cited by 22 publications

References 34 publications

Silicon alleviates drought damage by increasing antioxidant and photosynthetic performance in cowpea

Silicon alleviates drought damage by increasing antioxidant and photosynthetic performance in cowpea

Advances in Crop Genetic Improvement to Overcome Drought Stress: Bibliometric and Meta-Analysis

The Plant Metabolic Changes and the Physiological and Signaling Functions in the Responses to Abiotic Stress

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