Potential Role of Melatonin in the Regulation of Abiotic Stress in Horticultural Plant

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Biotic and Abiotic Stress".

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 2779

Special Issue Editors


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Guest Editor
School of Horticulture, Hainan University, Haikou 570228, China
Interests: abiotic stress; heat stress; cold stress ROS; RNS; plant physiology; plant molecular biology; oxidative stress; antioxidant; phytohormones; stress mitigant; photosynthesis
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Guest Editor
ICAR-Central Potato Research Institute, Shimla 171001, Himachal Pradesh, India
Interests: abiotic stress; plant physiology; salinty; heavy metal; nutrition; micronutrients; antioxidants; phytohormone; heat; drought; biotic stress; fungus; glycemic index; resistant starch; oxidative stress; reactive oxygen species; reactive nitrogen species; membrane biology; starch physiology

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Guest Editor
ICAR-Central Potato Research Institute, Shimla 171001, Himachal Pradesh, India
Interests: abiotic stress; biotic stress; melatonin; reactive oxygen species; fungus; bacteria; phytohormone; induced systemic resistance; virus diagnostics; soil and tuber borne diseases

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Guest Editor
Department of Agriculture, Nutrition and Food Systems, University of New Hampshire, Durham, NH 03824, USA
Interests: abiotic stresses (salinity; drought; heat; heavy metal toxicity); biochar as soilless media amendment; stress physiology; ecophysiology plant nutrients
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The current status of changing climate has become a significant threat to the global production of horticultural crops. To feed the larger part of the world’s growing population, the agricultural output needs to be boosted by 70 percent by the mid-century, which might supplement about an extra 2.3 billion people. Additionally, horticultural crop production is significantly affected under changing climatic conditions. One of the most critical issues for plant biologists and agronomists is how plants respond to different environmental stimuli. Drought, salt, and high temperatures are the most common environmental stresses that significantly affect plant growth and development. Traditional breeding methods have had little effectiveness due to the complexity of stress tolerance characteristics. They need effective improvements to meet the world’s increasing food demand. It is necessary to develop new and effective methods in this area. Phytohormones might act as a realistic option for producing climate-resilient crops with high yields.

In recent years, Melatonin has been an alternative eco-friendly approach for increasing abiotic stress tolerance in horticultural crops. Melatonin is a chemical regulator released in a very small amount and regulates plant growth, development, and response to the environment in various ways. Melatonin plays an important role during abiotic stress responses in plants, coordinating differential signal transduction pathways. They are involved in regulating many internal and external stimuli that bring major changes in plant development. Previous literature has revealed that Melatonin has been widely studied as a signaling molecule in the response of horticultural crops to abiotic stress. Furthermore, Melatonin plays a crucial role in horticultural production. Melatonin can regulate the physiological, biochemical, and molecular processes that allow plants to tolerate abiotic stresses and these methods are becoming more promising.

This Special Issue aims to shed light on the morphological, physiological, and biochemical processes triggered by the application of Melatonin, which ultimately leads to an increase in abiotic stress tolerance in horticultural crops. In this Special Issue, original research articles and reviews are welcome.

Suggested themes include (but are not limited to):

  • Potential role of Melatonin in the regulation of abiotic stress in Horticultural Plants.
  • Role of Melatonin-mediated cross-talk with other phytohormones in horticultural crops.
  • Reactive species interaction (reactive oxygen species and reactive nitrogen species) with Melatonin in horticultural crops under abiotic stress.
  • Role of Melatonin in growth and development of horticultural crops under abiotic stress.
  • Signaling of Melatonin in horticultural crops.

Dr. Muhammad Ahsan Altaf
Dr. Milan Kumar Lal
Dr. Rahul Kumar Tiwari
Dr. Muhammad Shahid
Guest Editors

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Keywords

  • melatonin
  • abiotic stress
  • antioxidant response
  • oxidative stress
  • plant physiology
  • molecular biology
  • horticultural plants
  • food security
  • tolerance mechanism

Published Papers (1 paper)

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Research

13 pages, 1195 KiB  
Article
Alleviation Mechanism of Melatonin in Chickpea (Cicer arietinum L.) under the Salt Stress Conditions
by Esin Dadasoglu, Metin Turan, Melek Ekinci, Sanem Argin and Ertan Yildirim
Horticulturae 2022, 8(11), 1066; https://doi.org/10.3390/horticulturae8111066 - 13 Nov 2022
Cited by 11 | Viewed by 2041
Abstract
Melatonin (MT) is considered to be a hormone involved in increasing tolerance in plants under stress. The effect of different doses (0, 50, and 100 µM) of MT on the growth, biochemical and physiological properties of chickpea under salt stress was investigated. Salt [...] Read more.
Melatonin (MT) is considered to be a hormone involved in increasing tolerance in plants under stress. The effect of different doses (0, 50, and 100 µM) of MT on the growth, biochemical and physiological properties of chickpea under salt stress was investigated. Salt stress significantly suppressed the growth, leaf relative water content (LRWC), chlorophyll reading value (CRV), chlorophyll a, chlorophyll b, and total chlorophyll. Salinity conditions also caused a decrease in macro- and micronutrients, while electrolyte leakage (EL), hydrogen peroxide (H2O2), malondialdehyde (MDA), and proline contents, catalase (CAT), peroxidase (POD), and superoxide dismutase (SOD) activities increased under salinity conditions. MT treatments increased plant fresh weight, plant dry weight, root fresh weight, root dry weight, plant height, stem diameter, LRWC, CRV, chlorophyll a, chlorophyll b, total chlorophyll, total carotene of chickpea seedlings under 75 and 150 mM NaCl compared to the non-MT treatment. Especially, 100 µM MT treatment under 75 and 150 mM salinity conditions reduced the H2O2 and MDA contents compared to the non-MT-treated plants. Moreover, exogenous MT increased the K+/Na+ and Ca+2/Na+ ratios under salt stress conditions. It could be concluded exogenous MT treatments alleviated the salt stress on chickpea by modulating physiological and biochemical properties. Especially 100 µM MT treatment can be suggested for decreasing the negative influence of salinity on chickpea seedlings. Full article
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