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Cloning and Characterization of a PI-like MADS-Box Gene in Phalaenopsis Orchid
Guo, Bin,Hexige, Saiyin,Zhang, Tian,Pittman, Jon K.,Chen, Donghong,Ming, Feng Korean Society for Biochemistry and Molecular Biol 2007 Journal of biochemistry and molecular biology Vol.40 No.6
The highly evolved flowers of orchids have colorful sepals and fused columns that offer an opportunity to discover new genes involved in floral development in monocotyledon species. In this investigation, we cloned and characterized the homologous PISTALLATA-like (PI-like) gene PhPI15 ($\underline{Ph}alaenopsis$ $\underline{PI}$ STILLATA # $\underline{15}$), from the Phalaenopsis hybrid cultivar. The protein sequence encoded by PhPI15 contains a typical PI-motif. Its sequence also formed a subclade with other monocot PI-type genes in phylogenetic analysis. Southern analysis showed that PhPI15 was present in the Phalaenopsis orchid genome as a single copy. Furthermore, it was expressed in all the whorls of the Phalaenopsis flower, while no expression was detected in vegetative organs. The flowers of transgenic tobacco plants ectopically expressing PhPI15 showed male-sterile phenotypes. Thus, as a Class-B MADS-box gene, PhPI15 specifies floral organ identity in orchids.
Designing Vegetables and Fruits for Improved Nutrition and Health – Calcium
Sunghun Park,Ning Hui Cheng,Jon K. Pittman,Kil Sun Yoo,Jungeun Park,Tae-Suk Kang,Chang-Kil Kim,Jeung-Sul Han,Sunggil Kim,Leonard M. Pike,Roberta H. Smith,Bhimanagouda S. Patil,Kendal D. Hirschi 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-