Dr Azam Salimi, Ali Abbasi, Dr Maryam Chavoushi Rizi,
Volume 11, Issue 4 (2-2025)
Abstract
Camelina (Cruciferae), is an oilseed. Chitosan is a natural biopolymer, non-toxic, and biocompatible which favors potentially broad application in biotic and abiotic stress. Iron is an essential micronutrient for almost all living organisms because it plays a critical role in metabolic processes respiration, and photosynthesis. In this research, examined the salinity (0, 8, 12, ds/m), (0, 5/12, 7/6 g/l) chitosan (0, 0.2, 0.4, g/l) and iron (0, 3, 6, g/l) based on a randomized block design with three replications. The sodium, root growth increased significantly in salinity. The irons and growth parameters decreased because the ionic ratio has been changed. Root increased to provide water. Due to the destructive effects of salinity, the increase of sodium has also affected other parameters and caused the decrease of iron and calcium. Stress has been reduced the shoot growth by affecting the growth of the plant. In this study, the interaction of salinity, chitosan, and iron, it was observed that the stem length, biomass, RWC, ions, carbohydrates increased and the root growth decreased. It has effect on RWC, regulating ions and compatible solutes, have been able to maintain the plant's conditions like stress-free conditions reduce the effects of salinity, and help plant growth.
Maryam Chavoushi Rizi,
Volume 13, Issue 2 (4-2026)
Abstract
Objective: Plants, as sessile organisms, are subjected to diverse abiotic stresses, including salinity, metal toxicity, thermal fluctuations, and hypoxia at different phases of plant growth. Plants can activate messenger molecules to initiate a signaling cascade in response to environmental stresses, resulting in either cell death or plant acclimation. Nitric oxide (NO) is a small, , gaseous, redox-active molecule that plays a plethora of physiological roles in plants and has emerged as a key regulator of plant growth, development, flowering, senescence, stomatal closure, dormancy, photosynthesis, geotropism, and responses to abiotic and biotic stressors. It can also facilitate alteration in protein function and reprogram the gene profiling by direct or indirect interaction with different target molecules. As a key redox molecule, nitric oxide is an important signaling molecule with diverse physiological functions in plants was classified as a phytohormone that might regulate plant growth. NO had physiological effects in plants, such as growth and development, dormancy, regulation of metabolism, aging, cell death, stomata, photosynthesis, geotropism, flowering, and response to abiotic and biotic stressors.
Conclusions: This review discusses some aspects related to NO in plants, such as chemical properties, synthesis pathways, and physiological and biochemical changes that occur in plants under stress conditions.
