Özet:

Polyamines are aliphatic, amine-containing polycationic molecules with a low molecular weight that are present in almost all cells. They've been considered a new class of plant growth regulators because they play critical roles in a variety of growth, developmental and physiological processes such as cell division and differentiation, protein synthesis, DNA replication, gene expression, somatic embryogenesis, dormancy breaking in seed germination, flower and fruit development, senescence, and enhancing stress tolerance. Although polyamines are known to be involved in various plant processes, their precise role remains unclear. This review includes current research on polyamine metabolism and function, metabolic mechanisms involved in polyamine formation and degradation, genetic and molecular approaches in plants, as well as studies using metabolic inhibitors to better understand the roles of polyamines. Polyamines and their modifications in transgenics are explored from a molecular perspective, and significant variations in polyamine titers in response to other plant regulators and stress factors are also discussed.

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