ArticleMolecular biotechnology2026
Development of an Efficient Regeneration and Agrobacterium-Mediated Transformation Protocol for Hosta 'Light Star' Using the RUBY Reporter Gene.
Article in Molecular biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Hosta plantaginea is a perennial shade-tolerant herb of the Liliaceae family, with high ornamental and urban greening value. Hosta 'Light Star' is a newly developed ornamental cultivar with yellow-margined leaves and lilac flowers, but no efficient in vitro regeneration or genetic transformation system has been established for this cultivar to date. In this study, we established a highly efficient in vitro regeneration system for Hosta 'Light Star,' and developed an Agrobacterium-mediated genetic transformation protocol using the RUBY visual reporter gene for non-invasive screening of positive transformants. The optimal callus induction medium was MS + 2 mg/L 6-BA + 0.3 mg/L NAA + 0.05 mg/L 2, 4-D, with a callus induction rate of 53.33% for leaf explants (the optimal explant for sterile seedlings). The optimal adventitious bud proliferation medium was MS + 2 mg/L 6-BA + 0.1 mg/L NAA, with a proliferation coefficient of 5.87. The optimal rooting medium was 1/2 MS + 0.5 mg/L NAA + 0.5 mg/L IBA, with a 100% rooting rate. The optimal transplant substrate was perlite:vermiculite = 2:1, with a 100% transplant survival rate after acclimatization. For Agrobacterium-mediated transformation, the optimal infection parameters were as follows: Agrobacterium suspension OD
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