Synergistic effects of gamma-aminobutyric acid and melatonin on seed germination and cadmium tolerance in tomato

Lv, Yiying; Zhao, Yongteng; He, Yuansheng; Wang, Jiming; Zheng, Yuanxian; Chen, Xiaolong; Huang, Feiyan; Liu, Jiani; Yu, Lei

doi:10.1080/15592324.2023.2216001

Cited by 15 publications

(4 citation statements)

References 57 publications

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“…35 Studies have shown that different melatonin concentrations have different effects on tomato biomass under stress conditions. 36 Our study on grapes was similar to its results in that in the pre-stress period, the dry fresh weight of grape roots and leaves was significantly increased under M50, M100, and M150 treatments. And all of them reached the maximum accumulation in the M50 treatment.…”

Section: Discussionsupporting

confidence: 87%

Exogenous melatonin delays leaves senescence and enhances saline and alkaline stress tolerance in grape seedlings

Yang,

Wei

et al. 2024

Plant Signaling & Behavior

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Saline and alkaline stress is one of the major abiotic stresses facing agricultural production, which severely inhibits the growth and yield of plant. The application of plant growth regulators can effectively prevent crop yield reduction caused by saline and alkaline stress. Exogenous melatonin (MT) can act as a signaling molecule involved in the regulation of a variety of physiological processes in plants, has been found to play a key role in enhancing the improvement of plant tolerance to abiotic stresses. However, the effects of exogenous MT on saline and alkaline tolerance of table grape seedlings and its mechanism have not been clarified. The aim of this study was to investigate the role of exogenous MT on morphological and physiological growth of table grape seedlings ( Vitis vinifera L.) under saline and alkaline stress. The results showed that saline and alkaline stress resulted in yellowing and wilting of grape leaves and a decrease in chlorophyll content, whereas the application of exogenous MT alleviated the degradation of chlorophyll in grape seedling leaves caused by saline and alkaline stress and promoted the accumulation of soluble sugars and proline content. In addition, exogenous MT increased the activity of antioxidant enzymes, which resulted in the scavenging of reactive oxygen species (ROS) generated by saline and alkaline stress. In conclusion, exogenous MT was involved in the tolerance of grape seedlings to saline and alkaline stress, and enhanced the saline and alkaline resistance of grape seedlings to promote the growth and development of the grape industry in saline and alkaline areas.

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Section: Discussionsupporting

confidence: 87%

Exogenous melatonin delays leaves senescence and enhances saline and alkaline stress tolerance in grape seedlings

Yang,

Wei

et al. 2024

Plant Signaling & Behavior

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“…The germination of crops like Solanum lycopersicum [50], Triticum aestivum [51], and Oryza sativa [52] is severely hindered by Cd contamination in soil. However, there is little research about the impact of Cd stress on the germination of C. auriculatum.…”

Section: Discussionmentioning

confidence: 99%

Nitric Oxide Promoted the Seed Germination of Cynanchum auriculatum under Cadmium Stress

Liu,

Qiao,

Yang

et al. 2023

Agronomy

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Cynanchum auriculatum, an early food-medicine homologous plant native to Asia, possesses significant nutritional and health benefits. However, the presence of cadmium (Cd) in the soil poses a hazard to the germination and growth of C. auriculatum. As nitric oxide (NO) plays a vital role in plant resistance to heavy metal stress, we used three different concentrations of SNP treatment during the germination phase, aiming to alleviate the inhibitory effects of Cd stress on the seed germination of C. auriculatum. The results indicated that when compared to seeds treated with SNP concentrations of 0.2 mM and 0.8 mM, C. auriculatum seeds treated with 0.4 mM SNP exhibited an improved germination rate and germination index, as well as longer hypocotyl. Furthermore, in comparison to NOS-like, the SNP application stimulated the production of endogenous NO through NR catalysis. Additional investigations showed that the ABA level decreased while the GA level increased under normal conditions, while the SNP application enhanced the accumulation of both ABA and GA in C. auriculatum seeds under Cd stress. Histochemical staining and biochemical indicators demonstrated that SNP treatment enhanced the enzymatic activity of SOD, POD, and CAT, while inhibiting the production of hydrogen peroxide and superoxide anion. Moreover, SNP treatment resulted in increased α-amylase activity, which facilitated starch hydrolysis and the generation of soluble sugar. Ultimately, the seed vitality of C. auriculatum under Cd stress was promoted. Our findings present a theoretical framework for the application of SNP in the seed germination mechanism of C. auriculatum and establish the groundwork for comprehending the physiological role of NO under Cd stress.

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“… 1 , 2 Cadmium, one of the potential harmful metals that enters into the soils from industrial and agricultural sources, is considered hazardous, harmful, and toxic. 3 , 4 It is water soluble and mobile in nature. 4 Plants do not require Cd and excessive amounts of Cd in plants may impair their metabolic activities.…”

Section: Introductionmentioning

confidence: 99%

Synergistic interplay between melatonin and hydrogen sulfide enhances cadmium-induced oxidative stress resistance in stock ( Matthiola incana L.)

Zulfiqar,

Moosa,

Ali

et al. 2024

Plant Signaling & Behavior

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Ornamental crops particularly cut flowers are considered sensitive to heavy metals (HMs) induced oxidative stress condition. Melatonin (MLT) is a versatile phytohormone with the ability to mitigate abiotic stresses induced oxidative stress in plants. Similarly, signaling molecules such as hydrogen sulfide (H 2 S) have emerged as potential options for resolving HMs related problems in plants. The mechanisms underlying the combined application of MLT and H 2 S are not yet explored. Therefore, we evaluated the ability of individual and combined applications of MLT (100 μM) and H 2 S in the form of sodium hydrosulfide (NaHS), a donor of H 2 S, (1.5 mM) to alleviate cadmium (Cd) stress (50 mg L −1 ) in stock ( Matthiola incana L.) plants by measuring various morpho-physiological and biochemical characteristics. The results depicted that Cd-stress inhibited growth, photosynthesis and induced Cd-associated oxidative stress as depicted by excessive ROS accumulation. Combined application of MLT and H 2 S efficiently recovered all these attributes. Furthermore, Cd stress-induced oxidative stress markers including electrolyte leakage, malondialdehyde, and hydrogen peroxide are partially reversed in Cd-stressed plants by MLT and H 2 S application. This might be attributed to MLT or H 2 S induced antioxidant plant defense activities, which effectively reduce the severity of oxidative stress indicators. Overall, MLT and H 2 S supplementation, favorably regulated Cd tolerance in stock; yet, the combined use had a greater effect on Cd tolerance than the independent application.

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Synergistic effects of gamma-aminobutyric acid and melatonin on seed germination and cadmium tolerance in tomato

Cited by 15 publications

References 57 publications

Exogenous melatonin delays leaves senescence and enhances saline and alkaline stress tolerance in grape seedlings

Exogenous melatonin delays leaves senescence and enhances saline and alkaline stress tolerance in grape seedlings

Nitric Oxide Promoted the Seed Germination of Cynanchum auriculatum under Cadmium Stress

Synergistic interplay between melatonin and hydrogen sulfide enhances cadmium-induced oxidative stress resistance in stock ( Matthiola incana L.)

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