Salicylic acid attenuates salinity-induced growth inhibition in in vitro raised ginger (Zingiber officinale Roscoe) plantlets by regulating ionic balance and antioxidative system

Hundare, Amar; Joshi, Veenu; Joshi, Nirmala

doi:10.1016/j.stress.2022.100070

Cited by 17 publications

(9 citation statements)

References 57 publications

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“…The foliar application of salicylic acid at the estimated concentration of 1.0 mM mitigated the effects of salt stress on the synthesis of chlorophyll a , chlorophyll b, and total chlorophyll in sour passion fruits in the first cropping cycle. According to Hundare et al [ 58 ], salicylic acid can stimulate the biosynthesis of chlorophyll and/or reduce its degradation, improving plant growth and development. In agreement with the present study, Silva et al [ 34 ] evaluated the effect of foliar application of salicylic acid on photosynthetic pigments in soursop under salt stress and found that foliar application of salicylic acid at a concentration of 1.4 mM reduced the effects of irrigation water salinity, promoting an increase in the contents of photosynthetic pigments (Chl a , Chl b , Chl t , and Car).…”

Section: Discussionmentioning

confidence: 99%

Foliar Applications of Salicylic Acid on Boosting Salt Stress Tolerance in Sour Passion Fruit in Two Cropping Cycles

Sobrinho

Silva

Lima

et al. 2023

Plants

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Brazil stands out as the largest producer of sour passion fruit; however, the water available for irrigation is mostly saline, which can limit its cultivation. This study was carried out with the objective of evaluating the effects of salicylic acid in the induction of tolerance in sour passion fruit to salt stress. The assay was conducted in a protected environment, using a completely randomized design in a split-plot scheme, with the levels of electrical conductivity of the irrigation water (0.8, 1.6, 2.4, 3.2, and 4.0 dS m−1) considering the plots and concentrations of salicylic acid (0, 1.2, 2.4, and 3.6 mM) the subplots, with three replications. The physiological indices, production components, and postharvest quality of sour passion fruit were negatively affected by the increase in the electrical conductivity of irrigation water, and the effects of salt stress were intensified in the second cycle. In the first cycle, the foliar application of salicylic acid at concentrations between 1.0 and 1.4 mM partially reduced the harmful effects of salt stress on the relative water content of leaves, electrolyte leakage, gas exchange, and synthesis of photosynthetic pigments, in addition to promoting an increase in the yield and quality parameters of sour passion fruit.

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Section: Discussionmentioning

confidence: 99%

Foliar Applications of Salicylic Acid on Boosting Salt Stress Tolerance in Sour Passion Fruit in Two Cropping Cycles

Sobrinho

Silva

Lima

et al. 2023

Plants

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“…Santos (2004) has demonstrated that salt‐induced decrease in chlorophyll content was due to reduced accumulation of 5‐aminolaevulinic acid (ALA), a precursor of chlorophyll. Another reason for this decline could either be due to downregulation of enzymes involved in chlorophyll synthesis and/or upregulation of chlorophyll degradation enzymes such as chlorophyllase (Sarangthem et al, 2011; Hundare et al, 2022). Moreover, the transpiration rate (Evap) for the −50 kPa treatment was significantly lower than observed for the −30 and −10 kPa treatments, except at 103 and 115 DAP in 2019 and at 100 DAP in 2020, as reduction in Evap is a survival strategy to reduce water loss under salinity (Harris et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Photosynthesis and salt cations adsorption response of spring maize (Zea mays L.) to salinity stress caused by different drip irrigation regimes in an arid saline area, Northwest China

Cheng

Zhang

Qiao

et al. 2022

J Agronomy Crop Science

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Salinity is one of the most decisive environmental factors limiting crop productivity, especially in arid and semi‐arid regions. The objective of this study was to evaluate the growth depression of spring maize (Zea mays L.) due to salinity stress caused by different drip irrigation regimes in an arid saline area. A two‐year field experiment was conducted in the Hetao Irrigation District, northwest China in 2019 and 2020. The study soil was moderately saline with ECe (electrical conductivity of saturated soil extract) of 8.04 dS m−1. Three threshold values of soil matric potential (SMP), −10, −30, and −50 kPa, were used to trigger a 10–20 mm drip irrigation of spring maize. Nine plots were arranged in a randomized block design (with triplication for each SMP level). Results showed that the lower soil salinity caused by higher SMP levels significantly increased crop photosynthetic capacity and reduced salt cations (K+, Na+, Ca2+, Mg2+) concentrations in plant organs, thereby increasing aboveground biomass and grain yields. Gas exchange parameter values first increased and then decreased in the R1–R5 stage (76–115 DAP) except for net photosynthetic rate (Pn) of −10 kPa treatment. Four salt cations in the aboveground parts were mainly distributed in stems and leaves, followed by grains. However, there was no significant difference in aboveground cationic accumulation among treatments. Correlation analysis indicated that gas exchange parameter values were negatively correlated with concentrations of K+, Na+, Ca2+, and Mg2+ in aboveground plant organs at harvest, indicating that Pn could quantitatively reflect the salt ionic toxicity in crops to a large extent. Considering photosynthesis, salt cations absorption, and water use efficiency, an SMP threshold of −30 kPa is recommended for drip irrigation of maize in this arid saline condition. These findings can provide a theoretical basis and technical reference for the promotion of mulched drip irrigation under the arid saline condition.

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“…Fu et al [64] reported that the metabolite concentrations of chlorophyll a, chlorophyll b, and carotenoids were decreased under heat stress in wheat. The en-hanced activity of chlorophyll-degrading enzymes like chlorophyllase, pheophytinase, and chlorophyll-degrading peroxidase catalyze the breakdown of chlorophyll molecules in response to stress [65]. Wang et al [66] suggested that a direct link was observed between MT and the concentration of photosynthetic pigment in soybean.…”

Section: Gas Exchangementioning

confidence: 99%

Role of Melatonin in Directing Plant Physiology

Ramasamy,

Karuppasami,

Alagarswamy

et al. 2023

Agronomy

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Melatonin (MT), a naturally occurring compound, is found in various species worldwide. In 1958, it was first identified in the pineal gland of dairy cows. MT is an “old friend” but a “new compound” for plant biology. It brings experts and research minds from the broad field of plant sciences due to its considerable influence on plant systems. The MT production process in plants and animals is distinct, where it has been expressed explicitly in chloroplasts and mitochondria in plants. Tryptophan acts as the precursor for the formation of phyto-melatonin, along with intermediates including tryptamine, serotonin, N-acetyl serotonin, and 5-methoxy tryptamine. It plays a vital role in growth phases such as the seed germination and seedling growth of crop plants. MT significantly impacts the gas exchange, thereby improving physio-chemical functions in plant systems. During stress, the excessive generation and accumulation of reactive oxygen species (ROS) causes protein oxidation, lipid peroxidation, nucleic acid damage, and enzyme inhibition. Because it directly acts as an antioxidant compound, it awakens the plant antioxidant defense system during stress and reduces the production of ROS, which results in decreasing cellular oxidative damage. MT can enhance plant growth and development in response to various abiotic stresses such as drought, salinity, high temperature, flooding, and heavy metals by regulating the antioxidant mechanism of plants. However, these reactions differ significantly from crop to crop and are based on the level and kind of stress. The role of MT in the physiological functions of plants towards plant growth and development, tolerance towards various abiotic stresses, and approaches for enhancing the endogenous MT in plant systems are broadly reviewed and it is suggested that MT is a steering compound in directing major physiological functions of plants under the changing climate in future.

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Salicylic acid attenuates salinity-induced growth inhibition in in vitro raised ginger (Zingiber officinale Roscoe) plantlets by regulating ionic balance and antioxidative system

Cited by 17 publications

References 57 publications

Foliar Applications of Salicylic Acid on Boosting Salt Stress Tolerance in Sour Passion Fruit in Two Cropping Cycles

Foliar Applications of Salicylic Acid on Boosting Salt Stress Tolerance in Sour Passion Fruit in Two Cropping Cycles

Photosynthesis and salt cations adsorption response of spring maize (Zea mays L.) to salinity stress caused by different drip irrigation regimes in an arid saline area, Northwest China

Role of Melatonin in Directing Plant Physiology

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