The combined supplementation of melatonin and salicylic acid effectively detoxifies arsenic toxicity by modulating phytochelatins and nitrogen metabolism in pepper plants

Kaya, Cengiz; Sarıoğlu, Ali; Ashraf, Muhammad; Alyemeni, Mohammed Nasser; Ahmad, Parvaiz

doi:10.1016/j.envpol.2021.118727

Cited by 63 publications

(26 citation statements)

References 83 publications

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“…SA in combination with kinetin or calcium ameliorated Ni and Pb stress in Phaseolus vulgaris plants [ 102 ]. The combined supplementation of melatonin and SA effectively detoxified As toxicity by modulating phytochelatins and nitrogen metabolism in pepper plants [ 103 ] (See Table 4 ).…”

Section: Functions Of Sa In Mitigating Abiotic Stressesmentioning

confidence: 99%

Salicylic Acid, a Multifaceted Hormone, Combats Abiotic Stresses in Plants

Liu

Qiu

Liu

et al. 2022

Life

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In recent decades, many new and exciting findings have paved the way to the better understanding of plant responses in various environmental changes. Some major areas are focused on role of phytohormone during abiotic stresses. Salicylic acid (SA) is one such plant hormone that has been implicated in processes not limited to plant growth, development, and responses to environmental stress. This review summarizes the various roles and functions of SA in mitigating abiotic stresses to plants, including heating, chilling, salinity, metal toxicity, drought, ultraviolet radiation, etc. Consistent with its critical roles in plant abiotic tolerance, this review identifies the gaps in the literature with regard to the complex signalling network between SA and reactive oxygen species, ABA, Ca2+, and nitric oxide. Furthermore, the molecular mechanisms underlying signalling networks that control development and stress responses in plants and underscore prospects for future research on SA concerning abiotic-stressed plants are also discussed.

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Section: Functions Of Sa In Mitigating Abiotic Stressesmentioning

confidence: 99%

Salicylic Acid, a Multifaceted Hormone, Combats Abiotic Stresses in Plants

Liu

Qiu

Liu

et al. 2022

Life

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“…Melatonin (MT) is an important hormone synthesized naturally in both plants and animals. Many recent studies have documented that MT is critical in several metabolic processes, including ROS scavenging systems ( Siddiqui et al, 2020a , b ), secondary metabolism ( Farouk and Al-Amri, 2019 ; Jahan et al, 2020 ), and modulation of nitrogen metabolism ( Qiao et al, 2019 ; Chen et al, 2021 ; Meng et al, 2021 ; Kaya et al, 2022 ). Therefore, MT plays a significant role in plants to cope with biotic and abiotic stresses ( Arnao and Hernández-Ruiz, 2015 , 2019 , 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, MT plays a significant role in plants to cope with biotic and abiotic stresses ( Arnao and Hernández-Ruiz, 2015 , 2019 , 2020 ). For example, MT promotes plant growth under harsh environmental conditions such as pollution of harmful elements ( Farouk and Al-Amri, 2019 ; Kaya et al, 2019 , 2022 ; Ahammed et al, 2020 ; Jahan et al, 2020 ; Seleiman et al, 2020 ; Hoque et al, 2021 ; Li S. et al, 2021 ; Bhat et al, 2022 ), heat ( Ahammed et al, 2018 ; Jahan et al, 2019 ), low temperature ( Bajwa et al, 2014 ; Li et al, 2018 ; Zhang et al, 2021 ), salinity ( Liang et al, 2015 ; Qi et al, 2020 ; Siddiqui et al, 2020a ), drought ( Sharma and Zheng, 2019 ; Dai et al, 2020 ; Imran et al, 2021 ), high light ( Ding et al, 2018 ; Lee and Back, 2018 ), ultraviolet radiation ( Yao et al, 2021 ), and herbicides ( Park et al, 2013 ; Giraldo Acosta et al, 2022 ). Therefore, MT is a plant master regulator with great potential for increasing crop yield in agriculture ( Wang et al, 2018 ; Arnao and Hernández-Ruiz, 2019 ; Bose and Howlader, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, MT is a plant master regulator with great potential for increasing crop yield in agriculture ( Wang et al, 2018 ; Arnao and Hernández-Ruiz, 2019 ; Bose and Howlader, 2020 ). Spraying of melatonin to leaves with a moderate concentration of 100 μM was usually used in previous studies, and the photosynthetic capacity was hardly affected by the spraying of MT ( Jahan et al, 2020 ; Kaya et al, 2022 ). Naturally, plant growth is not only determined by the photosynthetic capacity but also can be affected by the dynamic photosynthesis under fluctuating light ( Adachi et al, 2019 ; Kimura et al, 2020 ; Yamori et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…Under such conditions, the higher rate of PSII photodamage relative to PSII repair accelerates PSII photoinhibition ( Murata et al, 2007 ). If moderate PSII photoinhibition occurred, the oxidation of water at PSII and linear electron flow would be suppressed, restricting regeneration of ATP and NADPH and thus impairing A N and plant growth ( Takahashi and Murata, 2008 ; Huang et al, 2018 ; Kaya et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

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Exogenous melatonin strongly affects dynamic photosynthesis and enhances water-water cycle in tobacco

et al. 2022

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Melatonin (MT), an important phytohormone synthesized naturally, was recently used to improve plant resistance against abiotic and biotic stresses. However, the effects of exogenous melatonin on photosynthetic performances have not yet been well clarified. We found that spraying of exogenous melatonin (100 μM) to leaves slightly affected the steady state values of CO2 assimilation rate (AN), stomatal conductance (gs) and mesophyll conductance (gm) under high light in tobacco leaves. However, this exogenous melatonin strongly delayed the induction kinetics of gs and gm, leading to the slower induction speed of AN. During photosynthetic induction, AN is mainly limited by biochemistry in the absence of exogenous melatonin, but by CO2 diffusion conductance in the presence of exogenous melatonin. Therefore, exogenous melatonin can aggravate photosynthetic carbon loss during photosynthetic induction and should be used with care for crop plants grown under natural fluctuating light. Within the first 10 min after transition from low to high light, photosynthetic electron transport rates (ETR) for AN and photorespiration were suppressed in the presence of exogenous melatonin. Meanwhile, an important alternative electron sink, namely water-water cycle, was enhanced to dissipate excess light energy. These results indicate that exogenous melatonin upregulates water-water cycle to facilitate photoprotection. Taking together, this study is the first to demonstrate that exogenous melatonin inhibits dynamic photosynthesis and improves photoprotection in higher plants.

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