Melatonin: First-line soldier in tomato under abiotic stress current and future perspective.

Muhammad Ahsan Altaf, Rabia Shahid, Muhammad Mohsin Altaf, Ravinder Kumar, Safina Naz, Awadhesh Kumar, Pravej Alam, Rahul Kumar Tiwari, Milan Kumar Lal, Parvaiz Ahmad

Journal: Plant physiology and biochemistry : PPB 2022;185():188-197

PMID: 35700585

Full Text on Elsevier Science View on PubMed

Abstract

Melatonin is a natural, multifunctional, nontoxic, regulatory, and ubiquitous biomolecule, having low molecular weight and pleiotropic effects in the plant kingdom. It is a recently discovered plant master regulator which has a crucial role under abiotic stress conditions (salinity, drought, heat, cold, alkalinity, acid rain, ozone, and metals stress). In the solanaceous family, the tomato is highly sensitive to abiotic stresses that affect its growth and development, ultimately hampering production and productivity. Melatonin acts as a strong antioxidant, bio-stimulator, and growth regulator, facilitating photosynthesis, delaying leaf senescence, and increasing the antioxidant enzymes system through direct scavenging of reactive oxygen species (ROS) under abiotic stresses. In addition, melatonin also boosts morphological traits such as vegetative growth, leaf photosynthesis, root architecture system, mineral nutrient elements, and antioxidant activities in tomato plants, confirming their tolerances against salinity, drought, heat, cold, alkalinity, acid rain, chemical, pathogen, and metals stress. In this review, an attempt has been made to summarize the potential role of melatonin for tomato plant endurance towards abiotic stresses, along with the known relationship between the two.

Address: School of Horticulture, Hainan University, Haikou, 570228, China.; School of Management, Hainan University, Haikou, 570228, China.; College of Ecology and Environment, Hainan University, Haikou, 570228, China.; ICAR-Central Potato Research Institute, Shimla, 171001, HP, India.; Department of Horticulture, Bahauddin Zakariya University, Multan, Pakistan.; ICAR-National Rice Research Institute, Cuttack, 753006, Odisha, India.; Department of Biology, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, Alkharj, 11942, Saudi Arabia.; ICAR-Central Potato Research Institute, Shimla, 171001, HP, India; ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India. Electronic address: [email protected].; ICAR-Central Potato Research Institute, Shimla, 171001, HP, India; ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India. Electronic address: [email protected].; Department of Botany, GDC, Pulwama, 192301, Jammu and Kashmir, India. Electronic address: [email protected].

DOI: 10.1016/j.plaphy.2022.06.004

Link outs

Subscription / membership required

Full Text Sources:

https://linkinghub.elsevier.com/retrieve/pii/S0981...

MeSH Terms: Acid Rain, Antioxidants, Solanum lycopersicum, Melatonin, Stress, Physiological