Abscisic acid ZE isomer, also known as zeatin riboside, is a naturally occurring plant hormone classified under the group of cytokinins. Cytokinins are involved in numerous physiological processes in plants, such as cell division, growth, and differentiation. Zeatin riboside is a specific type of cytokinin that plays a crucial role in the regulation of plant development and response to various environmental stresses.
The Abscisic acid ZE isomer is derived from the biosynthesis of tRNA nucleotides and is primarily found in actively growing plant tissues, including shoot apical meristems, roots, and developing seeds. It acts as a signaling molecule that aids in the coordination of plant growth processes, particularly in promoting cell division and shoot initiation. Additionally, it influences the differentiation of various tissues and organs, contributing to the formation of roots and leaves.
Furthermore, Abscisic acid ZE isomer is involved in the regulation of plant responses to environmental cues. It promotes stress tolerance by enhancing the resistance to drought, salinity, and cold temperatures. This is accomplished through its ability to control stomatal closure, thereby reducing water loss through transpiration and preventing dehydration. Additionally, it influences the development of dormant buds and seeds, allowing plants to withstand unfavorable conditions until the environment becomes more suitable for growth and survival.
In conclusion, Abscisic acid ZE isomer is a type of cytokinin hormone that plays significant roles in plant growth, development, and response to environmental stresses. Its functions encompass promoting cell division, tissue differentiation, and stress tolerance, making it a crucial regulator of plant physiology.
