Panax ginseng PgMADS1 Gene is Involved in Inflorescence Growth and is Activated by Hormones
June 10, 2015| |
Panax ginseng is a perennial plant that requires at least 3 years to produce a simple umbel inflorescence in nature. Interestingly, flowering can be induced in vitro from young embryos by hormone treatment. To identify the gene for flower formation, Yong Eui Choi from Kangwon National University in South Korea isolated MADS-box genes from hormone-induced flowers of P. ginseng.
Analysis found that the PgMADS1 had enhanced accumulation in axillary buds as well as near the inflorescence meristems after hormone treatment. Transgenic P. ginseng overexpressing PgMADS1 were also developed. However, overexpression failed to induce flowering in the absence of hormone treatment.
These results indicate the involvement of PgMADS1 in the development of inflorescence in P. ginseng. However, overexpression of PgMADS1 is not enough to induce flowering without hormone treatment.
Read the full article on the Journal of Plant Biotechnology.
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