Mechanistic insights on melatonin-mediated plant growth regulation and hormonal cross-talk process in solanaceous vegetables

Altaf, Muhammad Ahsan; Sharma, Neeraj; Singh, J. B.; Samota, Mahesh Kumar; Sankhyan, Parul; Singh, Brajesh; Kumar, Awadhesh; Naz, Safina; Lal, Milan Kumar; Tiwari, Rahul Kumar; Kumar, Ravinder

doi:10.1016/j.scienta.2022.111570

Cited by 71 publications

(25 citation statements)

References 103 publications

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“…In the signal transduction pathway, the leaves perceive an adequate environmental cue, which is mediated by phyB and gibberellins, and then produce a systemic signal that is sent to the underground stolons to induce tuberization [ 73 ]. phyB-mediated perception of gibberellic acid (GA) response is controlled by a novel arm repeat photoperiod-responsive 1 protein (PHOR1), which is believed to be a general component of GA-signalling pathways [ 74 , 75 ]. Gibberellins and cytokinins are the two most important phytohormones that regulate the formation of potato tubers.…”

Section: Physiological Changes and Responses Of Potato Plants Under H...mentioning

confidence: 99%

Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress

Lal

Tiwari

Kumar

et al. 2022

Plants

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Most cultivated potatoes are tetraploid, and the tuber is the main economic part that is consumed due to its calorific and nutritional values. Recent trends in climate change led to the frequent occurrence of heat and drought stress in major potato-growing regions worldwide. The optimum temperature for tuber production is 15–20 °C. High-temperature and water-deficient conditions during the growing season result in several morphological, physiological, biochemical, and molecular alterations. The morphological changes under stress conditions may affect the process of stolon formation, tuberization, and bulking, ultimately affecting the tuber yield. This condition also affects the physiological responses, including an imbalance in the allocation of photoassimilates, respiration, water use efficiency, transpiration, carbon partitioning, and the source–sink relationship. The biochemical responses under stress conditions involve maintaining ionic homeostasis, synthesizing heat shock proteins, achieving osmolyte balance, and generating reactive oxygen species, ultimately affecting various biochemical pathways. Different networks that include both gene regulation and transcription factors are involved at the molecular level due to the combination of hot and water-deficient conditions. This article attempts to present an integrative content of physio-biochemical and molecular responses under the combined effects of heat and drought, prominent factors in climate change. Taking into account all of these aspects and responses, there is an immediate need for comprehensive screening of germplasm and the application of appropriate approaches and tactics to produce potato cultivars that perform well under drought and in heat-affected areas.

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Section: Physiological Changes and Responses Of Potato Plants Under H...mentioning

confidence: 99%

Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress

Lal

Tiwari

Kumar

et al. 2022

Plants

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“…34 Enzymatic and nonenzymatic antioxidants regulate ROS formation in the hormonal crosstalk between MT and other hormonal networks such as IAA, JA, SA, ABA, cytokinin, gibberellins, ethylene, and brassinosteroids. 35 SA spray application greatly boosted SOD and APX activities and reduced MDA and ROS in tomato plants exposed to clothianidin, dinotefuran, and difenoconazole. 36 In our study, nano-Se and MT foliar interventions substantially increased POD activity in wheat leaves and roots.…”

Section: ■ Discussionmentioning

confidence: 94%

“…However, when plants are subjected to various exterior stressors, excessive ROS is generated in cells, which leads to oxidative stress . Enzymatic and nonenzymatic antioxidants regulate ROS formation in the hormonal cross-talk between MT and other hormonal networks such as IAA, JA, SA, ABA, cytokinin, gibberellins, ethylene, and brassinosteroids . SA spray application greatly boosted SOD and APX activities and reduced MDA and ROS in tomato plants exposed to clothianidin, dinotefuran, and difenoconazole .…”

Section: Discussionmentioning

confidence: 99%

Novel Finding on How Melatonin and Nanoselenium Alleviate 2,4-D Butylate Stress in Wheat Plants

Zhou,

Zhang,

Miao

et al. 2023

J. Agric. Food Chem.

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Nanoselenium (nano-Se) or melatonin (MT) foliar spray reduces pesticide stress by stimulating plant secondary metabolism and antioxidant capacity. However, the effects of nano-Se and MT biofortification on the interaction between plant secondary metabolic pathways and rhizosphere microbes in mitigating 2,4-D butyrate stress remain unknown. Compared to nano-Se or MT treatment alone, nano-Se and MT combined application increased the antioxidant enzyme activities and decreased the MDA (25.0%) and H 2 O 2 (39.3%) contents with 2,4-D butylate exposure. Importantly, they enhance the soil enzymes (S-FDA by 53.1%), allelochemicals (luteolin by 164.1% and tricin by 147.3%), as well as plant secondary metabolites (JA by 63.3% and 193.3% in leaves and roots) levels. It also improved the beneficial microbial abundance of Comamonadaceae, Sphingomonadaceae, and Rhodobacteraceae in the rhizosphere soil. In conclusion, nano-Se and MT alleviate 2,4-D butylate stress in wheat plants by enabling the interaction between rhizosphere microorganisms, allelopathic substances, and secondary metabolites.

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“…In plants, melatonin was firstly detected in 1995 (26,27). Since then, it was found in various plant species and their different tissue parts, such as rice, wheat, tomato, apple, strawberry, grape, pepper, cucumber, and solanaceous, etc (28)(29)(30)(31)(32)(33)(34)(35)(36). Melatonin acts a key molecule to mediate multiple physiological processes, such as the alleviation of abiotic and biotic stresses, and plant growth and development (37)(38)(39)(40)(41)(42).…”

Section: Introductionmentioning

confidence: 99%

Crosstalk between melatonin and reactive oxygen species in fruits and vegetables post-harvest preservation: An update

Zhai²,

Yin³

et al. 2023

Front. Nutr.

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Fruits and vegetables contain numerous nutrients, such as vitamins, minerals, phenolic compounds, and dietary fibers. They reduce the incidence of cardiovascular diseases and the risk of certain chronic diseases, and improve the antioxidant and anti-inflammatory capacity. Moreover, melatonin was found in various fruits and vegetables species. Melatonin acts as a multifunctional compound to participate in various physiological processes. In recent years, many advances have been found that melatonin is also appraised as a key modulator on the fruits and vegetables post-harvest preservation. Fruits and vegetables post-harvest usually elicit reactive oxygen species (ROS) generation and accumulation. Excess ROS stimulate cell damage, protein structure destruction, and tissue aging, and thereby reducing their quality. Numerous studies find that exogenous application of melatonin modulates ROS homeostasis by regulating the antioxidant enzymes and non-enzymatic antioxidants systems. Further evidences reveal that melatonin often interacts with hormones and other signaling molecules, such as ROS, nitric oxide (NO), hydrogen sulfide (H2S), and etc. Among these ‘new’ molecules, crosstalks of melatonin and ROS, especially the H2O2 produced by RBOHs, are provided in fruits and vegetables post-harvest preservation in this review. It will provide reference for complicated integration of both melatonin and ROS as signal molecules in future study.

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Mechanistic insights on melatonin-mediated plant growth regulation and hormonal cross-talk process in solanaceous vegetables

Cited by 71 publications

References 103 publications

Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress

Mechanistic Concept of Physiological, Biochemical, and Molecular Responses of the Potato Crop to Heat and Drought Stress

Novel Finding on How Melatonin and Nanoselenium Alleviate 2,4-D Butylate Stress in Wheat Plants

Crosstalk between melatonin and reactive oxygen species in fruits and vegetables post-harvest preservation: An update

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