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AMBER and GOLD: Polycistronic Genes for Betaxanthin Production in Plants

Desnoyer, N.; Hill, L.; Youles, M.; Kamoun, S.

2026-01-14 bioengineering
10.64898/2026.01.14.699277 bioRxiv
Show abstract

Genetically encoded pigments are powerful visual reporters and creative tools for biology, yet in plants the palette of pigment biosynthesis genes has remained largely limited to red betacyanins encoded by RUBY. Here we develop and characterize three new polycistronic constructs AMBER_v1, AMBER_v2, and GOLD that contain betalain biosynthesis enzymes to produce yellow, fluorescent betaxanthins in plant tissues. These tools expand the palette of publicly available pigmentation genes for use in plant research, education, and floral design.

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