Sustaining nitrogen dynamics: A critical aspect for improving salt tolerance in plants

Abstract

In the current changing environment, salt stress has become a major concern for plant growth and food production worldwide. Understanding the mechanisms of how plants function in saline environments is critical for initiating efforts to mitigate the detrimental effects of salt stress. Agricultural productivity is linked to nutrient availability, and it is expected that the judicious metabolism of mineral nutrients has a positive impact on alleviating salt-induced losses in crop plants. Nitrogen (N) is a macronutrient that contributes significantly to sustainable agriculture by maintaining productivity and plant growth in both optimal and stressful environments. Significant progress has been made in comprehending the fundamental physiological and molecular mechanisms associated with N-mediated plant responses to salt stress. This review provided an (a) overview of N-sensing, transportation, and assimilation in plants; (b) assess the salt stress-mediated regulation of N dynamics and nitrogen use- efficiency; (c) critically appraise the role of N in plants exposed to salt stress. Furthermore, the existing but less explored crosstalk between N and phytohormones has been discussed that may be utilized to gain a better understanding of plant adaptive responses to salt stress. In addition, the shade of a small beam of light on the manipulation of N dynamics through genetic engineering with an aim of developing salt-tolerant plants is also highlighted.

Sulfated Nutrition Modifies Nutrient Content and Photosynthetic Pigment Concentration in Cabbage under Salt Stress

“…By decreasing N absorption, the formation of amino acids, amides and proteins, polyamines, and quaternary compounds is reduced [21]. N is a determining factor in the synthesis of chlorophylls, amino acids, proteins, nucleic acids, enzymes, plant hormones, and osmolytes, which participate in the mechanisms of tolerance to abiotic stress [22].…”

Introductory Chapter: Making Plant Life Easier and Productive under Salinity – Updates and Prospects

“…The major impacts of salt stress on photosynthesis and related variables, ionic relationships, plant senescence, and yield can be assessed well by employing high-throughput phenotyping [151,152]. The manipulation of N-dynamics through genetic engineering has great potential to improve plant life under salinity stress [153]. As also mentioned above that, ethylene is an important gaseous phytohormone involved in the regulation of plants growth, development, and senescence [154].…”

Editorial: Improving crop nutritional security for sustainable agriculture in the era of climate change

“…In the pursuit of future food security, a critical challenge lies in deciphering how climate variables interact with plant growth, fitness, and yield parameters. Such interactions can trigger unique shifts in various aspects of plants, including morphology, physiology, and metabolite accumulation, leading to adaptive responses tailored to specific climate scenarios (Nazir et al, 2023). Vecěrǒváet al deciphered the intricate interactions between climate variables and plant responses.…”