Chen Shanshan, Zhao Chun-Bo, Ren Rui-Min, Jiang Jun-Hai
College of Horticulture, Jilin Agricultural University, Changchun, China.
Front Plant Sci. 2023 Feb 16;14:1141918. doi: 10.3389/fpls.2023.1141918. eCollection 2023.
Horticultural crops are greatly disturbed by severe abiotic stress conditions. This is considered one of the major threats to the healthy lives of the human population. Salicylic acid (SA) is famous as one of the multifunctional phytohormones that are widely found in plants. It is also an important bio-stimulator involved in the regulation of growth and the developmental stages of horticultural crops. The productivity of horticultural crops has been improved with the supplemental use of even small amounts of SA. It has good capability to reduce oxidative injuries that occur from the over-production of reactive oxygen species (ROS), potentially elevated photosynthesis, chlorophyll pigments, and stomatal regulation. Physiological and biochemical processes have revealed that SA enhances signaling molecules, enzymatic and non-enzymatic antioxidants, osmolytes, and secondary metabolites activities within the cell compartments of plants. Numerous genomic approaches have also explored that SA regulates transcriptions profiling, transcriptional apprehensions, genomic expression, and metabolism of stress-related genes. Many plant biologists have been working on SA and its functioning in plants; however, its involvement in the enhancement of tolerance against abiotic stress in horticultural crops is still unidentified and needs more attention. Therefore, the current review is focused on a detailed exploration of SA in physiological and biochemical processes in horticultural crops subjected to abiotic stress. The current information is comprehensive and aims to be more supportive of the development of higher-yielding germplasm against abiotic stress.
园艺作物受到严重非生物胁迫条件的极大干扰。这被认为是对人类健康生活的主要威胁之一。水杨酸（SA）作为一种广泛存在于植物中的多功能植物激素而闻名。它也是参与园艺作物生长和发育阶段调控的重要生物刺激剂。即使补充少量的SA也能提高园艺作物的产量。它具有良好的能力来减少因活性氧（ROS）过量产生而导致的氧化损伤，可能提高光合作用、叶绿素色素含量和气孔调节能力。生理和生化过程表明，SA能增强植物细胞内信号分子、酶促和非酶促抗氧化剂、渗透调节物质和次生代谢物的活性。许多基因组学方法也探索了SA对转录谱、转录捕获、基因组表达以及胁迫相关基因代谢的调控作用。许多植物生物学家一直在研究SA及其在植物中的功能；然而，其在增强园艺作物对非生物胁迫耐受性方面的作用仍不明确，需要更多关注。因此，本综述聚焦于对遭受非生物胁迫的园艺作物生理和生化过程中SA的详细探究。当前的信息全面，旨在更有力地支持抗非生物胁迫高产种质的开发。
