دانلود کتاب فیتوملاتونین -تنظیم رشد و محافظت در برابر استرس در گیاهان

Phytomelatonin, identified as a plant hormone, plays diversified roles in the growth and development of plants, however, its exact function is not yet fully understood and is still under investigation. This well-known indolic compound has acquired an increasing interest in many physiological and biochemical aspects (Arnao and Hernández-Ruiz 2007; Arnao et al. 2023). It has a pivotal role in plants as a regulatory mechanism that boosts plant tolerance and adaptation to both biotic (living) and abiotic (non-living) stressors (Seth et al. 2023). Melatonin is a biologically produced indoleamine that shares structural similarities with other important biomolecules, including tryptophan, tryptamine, indole-3-acetic acid, and serotonin (Figure 1.1). This structural resemblance contributes to melatonin’s diverse range of physiological functions that can be explained by its capacity to directly scavenge reactive oxygen species (ROS) and free radicals (Aghdam and Arnao 2024). In addition, it also regulates circadian rhythms; phytomelatonin is involved in plant development, increasing photosynthetic ability, seed germination, root growth, and amassing of carbon, etc. (Tyagi et al. 2023). The melatonin molecule functions as a potent free radical scavenger for hydroxyl radical (OH), superoxide anion (O2 -), hydrogen peroxide (H2O2), nitric oxide (NO), peroxynitrite anion (ONOO-), peroxyl radical (ROO), and alkoxyl radical (RO), etc. have been extensively investigated in-vitro and in-vivo, in plant and animal systems.