Foliar-applied glycine betaine minimizes drought stress-related impact to gas exchange and the photochemical efficiency of PSII in sugarcane

Júnior, Sebastião de Oliveira Maia; Andrade, Jailma Ribeiro de; Santos, Claudiana Moura dos; Santos, Jônatas Vieira; Silva, Lennon Klédson dos Santos; Clemente, Paulo Ricardo Aprígio; Ferreira, Vilma Marques; Silva, José Vieira; Endres, Laurício

doi:10.1007/s40626-020-00188-5

Cited by 9 publications

(3 citation statements)

References 33 publications

(72 reference statements)

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“…For example, Verma et al [29] found that the foliar application of silicon, in addition to reducing the harmful effects of water deficit in sugarcane, also improves the plant's antioxidant defense system, by favoring the synthesis of photosynthetic pigments and the maximum quantum efficiency of photosystem II. In another study, Maia Júnior et al [37] observed that, in sugarcane plants, the foliar application of glycine betaine mitigates the harmful effects of water deficit on the PSII photochemical apparatus.…”

Section: Resultsmentioning

confidence: 97%

Beneficial Effect of Exogenously Applied Calcium Pyruvate in Alleviating Water Deficit in Sugarcane as Assessed by Chlorophyll a Fluorescence Technique

Dias,

da Silva,

Fernandes

et al. 2024

Plants

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The growing demand for food production has led to an increase in agricultural areas, including many with low and irregular rainfall, stressing the importance of studies aimed at mitigating the harmful effects of water stress. From this perspective, the objective of this study was to evaluate calcium pyruvate as an attenuator of water deficit on chlorophyll a fluorescence of five sugarcane genotypes. The experiment was conducted in a plant nursery where three management strategies (E1—full irrigation, E2—water deficit with the application of 30 mM calcium pyruvate, and E3—water deficit without the application of calcium pyruvate) and five sugarcane genotypes (RB863129, RB92579, RB962962, RB021754, and RB041443) were tested, distributed in randomized blocks, in a 3 × 5 factorial design with three replications. There is dissimilarity in the fluorescence parameters and photosynthetic pigments of the RB863129 genotype in relation to those of the RB041443, RB96262, RB021754, and RB92579 genotypes. Foliar application of calcium pyruvate alleviates the effects of water deficit on the fluorescence parameters of chlorophyll a and photosynthetic pigments in sugarcane, without interaction with the genotypes. However, subsequent validation tests will be necessary to test and validate the adoption of this technology under field conditions.

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Section: Resultsmentioning

confidence: 97%

Beneficial Effect of Exogenously Applied Calcium Pyruvate in Alleviating Water Deficit in Sugarcane as Assessed by Chlorophyll a Fluorescence Technique

Dias,

da Silva,

Fernandes

et al. 2024

Plants

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“…2020). Exogenous application of glycine betaine improves the rate of photosynthesis and induces drought tolerance in Saccharum officinarum (de Oliveira Maia Júnior et al . 2020).…”

Section: Production Of Osmolytesmentioning

confidence: 99%

Induction of regulatory mechanisms by plant growth promoting rhizobacteria in crops facing drought stress

Tanveer

Ilyas

Akhtar

et al. 2023

Crop & Pasture Science

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Climate change and global warming are leading to severe drought stress, causing damage to crops in different regions of the world. Drought stress is an abiotic stress that interferes with major metabolic pathways, influencing mainly morphological, physiological and biochemical parameters of plants, ultimately resulting in decreased growth and yield of crops. Plants should be able to utilise available moisture efficiently, and there is a need to focus on organic and eco-friendly methods for improving crops facing drought stress. A practical approach for enhancing growth and development under stressful conditions is the application of plant growth promoting rhizobacteria (PGPR), soil microbes that help plants to cope with extreme ecological conditions. This review aims to highlight the function of various PGPR metabolites that help to mitigate water-deficit conditions. These microbes exist naturally in the rhizosphere of plants, and they enhance plant growth by several direct mechanisms such as aminocyclopropane-1-carboxylate deaminase and osmolyte production, secretion of exopolysaccharides and phytohormones, triggering of antioxidant defence mechanisms against reactive oxygen species and production of volatile organic compounds, as well as by indirect mechanisms including enhancing induced systemic resistance and pathogen suppression. This review recommends the use of PGPR for improving growth and development of crops under drought stress and supports their role as effective and sustainable bioinoculants for enhancing the growth and production of crops.

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“…It is normally used to increase tolerance against abiotic stresses, such as freezing, salinity and drought stress [18]. Foliar application of GB results in rapid uptake, translocating to different plant organs [18], enhancing antioxidant defence [19,20], leaf gas-exchange attributes [21,22] and growth under stress conditions [22]. A recent publication shows how a foliar application of 11.5 g L −1 can increase yield [23].…”

Section: Introductionmentioning

confidence: 99%

Applying Biostimulants to Combat Water Deficit in Crop Plants: Research and Debate

et al. 2022

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Climate change has increased the severity of drought episodes by further reducing precipitation in vulnerable zones. Drought induces a substantial decrease in agricultural water, reducing crop yields. Consequently, addressing water consumption can increase farmers’ profits. This work describes lab-to-field research in Zea mays, using two biostimulants: glycine betaine (GB) and L-pyroglutamic acid (PG). The biostimulant optimal dosages were selected using a hydroponic system with 20% polyethylene glycol and nursery experiments under water-deficit irrigation. The established dosages were evaluated in field trials in which irrigation was reduced by 20%. Laboratory biostimulant optimisation showed in stressed treated seedlings (GB 0.1 mM; PG 1 mM) an increased dry weight, relative growth rate and water use efficiency, reducing seedling growth loss between 65 and 85%, respectively. Field trials using a GB-optimised dosage showed an increase in plants’ growth, grain yield and flour Ca content. In addition, grain flour carbohydrate content and protein remained similar to control well-watered plants. Finally, the economic aspects of biostimulant treatments, water consumption, water sources (ground vs. desalinated) and grain biomass were addressed. Overall, GB treatment demonstrated to be a valuable tool to reduce water consumption and improve farmers’ earnings.

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Foliar-applied glycine betaine minimizes drought stress-related impact to gas exchange and the photochemical efficiency of PSII in sugarcane

Cited by 9 publications

References 33 publications

Beneficial Effect of Exogenously Applied Calcium Pyruvate in Alleviating Water Deficit in Sugarcane as Assessed by Chlorophyll a Fluorescence Technique

Beneficial Effect of Exogenously Applied Calcium Pyruvate in Alleviating Water Deficit in Sugarcane as Assessed by Chlorophyll a Fluorescence Technique

Induction of regulatory mechanisms by plant growth promoting rhizobacteria in crops facing drought stress

Applying Biostimulants to Combat Water Deficit in Crop Plants: Research and Debate

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