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http://dx.doi.org/10.5352/JLS.2009.19.3.378

Agrobacterium-Mediated Transformation of Phalaenopsis by Using Protocorm-Like Body  

Hur, Yeon-Jae (Dong-A University)
Kim, Eun-Young (Dong-A University)
Yang, Won-Tae (Dong-A University)
Lee, Young-Byoung (Dong-A University)
Lee, Jae-Hun (Dong-A University)
Jung, Young-Soo (Dong-A University)
Nam, Jae-Sung (Dong-A University)
Yun, Dae-Jin (Gyeong-Sang National University)
Yi, Ki-Hwan (Department of Functional Crop, National Institute of Crop Science)
Kim, Doh-Hoon (Dong-A University)
Publication Information
Journal of Life Science / v.19, no.3, 2009 , pp. 378-383 More about this Journal
Abstract
Agrobacterium tumefaciens-mediated transformation procedure for the phalaenopsis orchid, established by using Protocorm-like bodies (PLBs), was aimed at the introduction of target genes into individuals with divergent genetic backgrounds. PLBs obtained from the axillary bud of a peduncle were maintained on a hyponex medium supplemented with 1 g/l of activated charcoal, 30 g/l of sucrose and 0.1 mg/l thiamine. The multiplication rate of PLBs was about 90% in case of subculture PLBs to be cut transversely into 1/3 part from top position. The PLBs were inoculated with Agrobacterium strain EHA105 harboring both $\beta$-glucuronidase (GUS) and hygromycin-resistant genes for 20 minutes after dipping treatment. Transformation efficiency was the highest with a Agrobacterium culture medium and dipping treatment of O.D. 0.8. Newly induced PLBs were put on selection medium containing 1 mg/l hygromycin for 2 months. Hygromycin-resistant phalaenopsis plants that regenerated after the selection culture of PLBs showed histochemical blue staining due to GUS. Transgene integration of the hygromycin-resistant plants was confirmed by PCR and Southern blot using GUS specific primers and probe.
Keywords
Phalaenopsis; transformation; Agrobacterium; protocorm-like body;
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