Exogenous Spermidine Modulates Osmoregulatory Substances and Leaf Stomata to Alleviate the Damage to Lettuce Seedlings Caused by High Temperature Stress

Huang, Haoting; Han, Yingyan; Hao, Jinghong; Qin, Xiaoxiao; Liu, Chaojie; Su, Fan

doi:10.1007/s00344-022-10625-1

Cited by 10 publications

(5 citation statements)

References 83 publications

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“…During the present investigation polyamines increase significantly in both cultivars of potato by using various osmotica. Polyamines have a protective role on plants under various abiotic stress by regulating and increasing the uptake of various inorganic ions directly, which in turn enhances stress tolerance in plants [10,58]. Furthermore, an increase in the activity of SOD under various osmotic stress-inducing agents during the present study may justify the role of polyamines in modulating the homeostasis of reactive oxygen species.…”

Section: Discussionmentioning

confidence: 60%

“…Polyamines (PA's) are important low molecular weight compounds involved in various metabolic processes in plants under both normal and extreme environmental stress conditions [9]. PA's play's regulatory role in plants under osmotic stress conditions by increasing the Ca, K, Fe, Mn, Zn, and NO − 3 ions in Lettuce leaves and reduced stomatal aperture [10]. Involvement of polyamine was also reported by Elsayed et al [11] under salt stress by enhancing antioxidant enzymes in wheat.…”

Section: Introductionmentioning

confidence: 99%

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Improvement of Polyethylene Glycol, Sorbitol, Mannitol, and Sucrose-Induced Osmotic Stress Tolerance through Modulation of the Polyamines, Proteins, and Superoxide Dismutase Activity in Potato

Sajid

Aftab

2022

International Journal of Agronomy

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The present study was planned to investigate the changes in morphological and biochemical parameters of in vitro-grown potato (cultivar Cardinal and Desiree) plants under osmotic stress conditions induced by various concentrations of sorbitol, mannitol (0, 0.025, 0.05, 0.10, or 0.15 M), sucrose (0, 2, 3, 4, 6, and 8%), and polyethylene glycol (PEG: MW-4000: 0, 5, 10, 15, and 20%). Nodal segments (ca. 1.0 cm) from healthy in vitro-grown potato plantlets were inoculated on Murashige and Skoog’s medium consisting of various levels of above mentioned drought stress-inducing agents. Data was recorded on 60th day of incubation exhibited a severe reduction in most of the growth parameters at 0.10 and 0.15 M of sorbitol and mannitol, respectively, and at 5–10% PEG. Similar results were observed when the sucrose level varied from 3% except for the number of roots and plant dry weight, which exhibited an increase in increasing the sucrose level. Data collected for total soluble protein content and activity of an antioxidant enzyme (superoxide dismutase) unveiled an overall increasing trend in osmotically stressed potato plants suggesting their major action in detoxification of active oxygen species produced under osmotic stress. Polyamines (putrescine, spermidine, and spermine) increased significantly in both the cultivars of potato by using osmotic stress-inducing agent in the present investigation indicating their positive role in stress alleviation. Overall results indicated that potato cultivar Desiree was more stress-tolerant than the cultivar Cardinal.

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Section: Discussionmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Improvement of Polyethylene Glycol, Sorbitol, Mannitol, and Sucrose-Induced Osmotic Stress Tolerance through Modulation of the Polyamines, Proteins, and Superoxide Dismutase Activity in Potato

Sajid

Aftab

2022

International Journal of Agronomy

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“…Woody plants can accumulate some organic or inorganic substances independently when they are stressed by high-temperature adversity [52]. The main organic substances involved in osmotic adjustment are soluble sugar, proline (Pro) and soluble protein [53]. Studies have found that high-temperature stress can cause an imbalance of water inside and outside the cells of woody plants, leading to cell dehydration.…”

Section: Influence On Osmotic Adjustment Substancesmentioning

confidence: 99%

Response Mechanisms of Woody Plants to High-Temperature Stress

Zhou,

Wu,

et al. 2023

Plants

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High-temperature stress is the main environmental stress that restricts the growth and development of woody plants, and the growth and development of woody plants are affected by high-temperature stress. The influence of high temperature on woody plants varies with the degree and duration of the high temperature and the species of woody plants. Woody plants have the mechanism of adapting to high temperature, and the mechanism for activating tolerance in woody plants mainly counteracts the biochemical and physiological changes induced by stress by regulating osmotic adjustment substances, antioxidant enzyme activities and transcription control factors. Under high-temperature stress, woody plants ability to perceive high-temperature stimuli and initiate the appropriate physiological, biochemical and genomic changes is the key to determining the survival of woody plants. The gene expression induced by high-temperature stress also greatly improves tolerance. Changes in the morphological structure, physiology, biochemistry and genomics of woody plants are usually used as indicators of high-temperature tolerance. In this paper, the effects of high-temperature stress on seed germination, plant morphology and anatomical structure characteristics, physiological and biochemical indicators, genomics and other aspects of woody plants are reviewed, which provides a reference for the study of the heat-tolerance mechanism of woody plants.

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“…Polyamines play diverse roles in various physiological processes, including photosynthetic activity, membrane stabilization, enzyme activation, stimulation of cell division, cell growth and development, DNA and protein synthesis, control of root branching, embryogenesis, flower development, organ growth, seed germination, and responses to both biotic and abiotic stresses [ 24 , 25 ]. The polycationic nature of polyamines under physiological pH is a critical characteristic that influences their biological activities [ 26 ]. Polyamines can act as stress messengers in different environmental conditions, competing with ethylene, a common precursor called S-adenosylmethionine.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of salinity stress in yarrow (Achillea millefolium L.) plants through spermidine application

Alijani,

Raji,

Bistgani

et al. 2024

PLoS ONE

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This study investigated the mitigating effects of spermidine on salinity-stressed yarrow plants (Achillea millefolium L.), an economically important medicinal crop. Plants were treated with four salinity levels (0, 30, 60, 90 mM NaCl) and three spermidine concentrations (0, 1.5, 3 μM). Salinity induced electrolyte leakage in a dose-dependent manner, increasing from 22% at 30 mM to 56% at 90 mM NaCl without spermidine. However, 1.5 μM spermidine significantly reduced leakage across salinities by 1.35–11.2% relative to untreated stressed plants. Photosynthetic pigments (chlorophyll a, b, carotenoids) also exhibited salinity- and spermidine-modulated responses. While salinity decreased chlorophyll a, both spermidine concentrations increased chlorophyll b and carotenoids under most saline conditions. Salinity and spermidine synergistically elevated osmoprotectants proline and total carbohydrates, with 3 μM spermidine augmenting proline and carbohydrates up to 14.4% and 13.1% at 90 mM NaCl, respectively. Antioxidant enzymes CAT, POD and APX displayed complex regulation influenced by treatment factors. Moreover, salinity stress and spermidine also influenced the expression of linalool and pinene synthetase genes, with the highest expression levels observed under 90 mM salt stress and the application of 3 μM spermidine. The findings provide valuable insights into the responses of yarrow plants to salinity stress and highlight the potential of spermidine in mitigating the adverse effects of salinity stress.

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Exogenous Spermidine Modulates Osmoregulatory Substances and Leaf Stomata to Alleviate the Damage to Lettuce Seedlings Caused by High Temperature Stress

Cited by 10 publications

References 83 publications

Improvement of Polyethylene Glycol, Sorbitol, Mannitol, and Sucrose-Induced Osmotic Stress Tolerance through Modulation of the Polyamines, Proteins, and Superoxide Dismutase Activity in Potato

Improvement of Polyethylene Glycol, Sorbitol, Mannitol, and Sucrose-Induced Osmotic Stress Tolerance through Modulation of the Polyamines, Proteins, and Superoxide Dismutase Activity in Potato

Response Mechanisms of Woody Plants to High-Temperature Stress

Mitigation of salinity stress in yarrow (Achillea millefolium L.) plants through spermidine application

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