Scientists gene-edit a popular purple houseplant for the first time
Tuo W, Wang X, Wu T, Zhang S, Guo P
Crispr
The velvety purple 'Sunset Velvet' oxalis on windowsills everywhere could soon come in new colors and hardier forms, now that breeders finally have a way to edit its genes.
Oxalis vulcanicola 'Sunset Velvet' is a popular ornamental plant, but breeders had no way to tweak its genes because scientists couldn't get new DNA into its cells reliably. This team figured out the right recipe of timing, bacteria concentration, and chemical triggers to finally insert genes into the plant, then used CRISPR to switch off a pigment gene, turning the leaves ghostly white to prove the edit worked. It's a small first step, but it opens the door to breeding new colors, shapes, or tougher versions of this and other unusual ornamental plants.
Key Findings
Optimized Agrobacterium-mediated transformation achieved a peak transient GUS expression rate of ~9.0% and produced eight stable transgenic lines.
First successful CRISPR/Cas9 genome editing in the genus Oxalis, targeting the OvPDS1 carotenoid biosynthesis gene.
Editing OvPDS1 caused an albino phenotype and was confirmed by Sanger sequencing, though editing efficiency was low at 0.5%.
chevron_right Technical Summary
Scientists cracked a long-standing barrier by developing the first reliable method to genetically modify Oxalis vulcanicola 'Sunset Velvet', a popular houseplant, and used gene-editing to knock out a color-related gene, turning leaves albino as proof it works.
Abstract Preview
Original paper
Establishment of an efficient Agrobacterium-mediated transformation system and CRISPR/Cas9-mediated genome editing of the OvPDS1 gene in Oxalis vulcanicola 'Sunset Velvet'.
This study overcomes a key technical barrier by establishing transformation and enabling first CRISPR/Cas9 editing in Oxalis, providing a platform for functional genomics and breeding. The lack of ...
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