Regulated promoters applied to plant engineering: an insight over promising soybean promoters under biotic stress and their cis-elements

Promoters are upstream gene regulatory sequences recognized by transcription factors (TFs) involved in controlling initiation and progression. For modern crop improvement, the design of efficient constructs relies on promoter efficiency, tissue specificity, other characteristics that allow introgression agronomically relevant traits to overcome biotic abiotic stresses. Several constitutive viral promoters, such as pCaMV35S, remain widely employed transgenic plant generation, but their indiscriminate use leads silencing triggering metabolic penalties impacting fitness. The identification functional characterization plant-derived promoters can unveil alternatives commonly used non-homologous promoters; however, knowledge over them remains limited, especially for crops. This review summarizes drive foreign expression homologous heterologous systems, focusing inducible soybean from genes upregulated different Analyses these revealed 22 coincident cis-acting elements be synthetic engineering responsive multiple stresses and, therefore, efficiently expression, conferring desirable soybean. In addition, we also revisited commercial protected provide an update gain new insights into superior crops’ development.