what is transient expression
â¢. Transient expression is likely to become a method of choice for plant synthetic biology. Recent developments in transient expression methods have enabled the efficient delivery and expression of multiple genes within the same plant cell over a timescale of days.In some cases, the vectors deployed can be fine-tuned to allow differential expression of the various genes.ecent developments in transient expression methods have enabled the efficient delivery and expression of multiple genes within the same plant cell over a timescale of days.