Promo-latex – Novel laticifer-specific promoters from Taraxacum koksaghyz

The invention discloses a set of laticifer-specific promoters from Taraxacum koksaghyz (Russian Dandelion), which control rubber gene expression. These enabling tools will allow to

1) improve rubber quantity and quality in Taraxacum koksaghyz by specific modulation of rubber gene expression. 2) achieve rubber biosynthesis in a non- or low-rubber producer such as Taraxacum officinale by introducing the promoters and corresponding rubber biosynthetic genes. These novel plant lines will open a completely new route to meet the growing demand for rubber. 3) co-express commercially interesting gene products (e.g. diagnostic antibodies) to be secreted in the latex. Thus, downstream processing of recombinant proteins will significantly improved since latex from plants is easy to harvest.

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