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Molecular Breeding 6: 581592, 2000. 2000 Kluwer Academic Publishers. Printed in the Netherlands.

Summary: Molecular Breeding 6: 581592, 2000.
2000 Kluwer Academic Publishers. Printed in the Netherlands.
Production of transgenic rice plants showing reduced heading date and
plant height by ectopic expression of rice MADS-box genes
Jong-Seong Jeon, Sichul Lee, Ki-Hong Jung, Woong-Suk Yang, Gi-Hwan Yi1, Byeong-Geun
Oh1 and Gynheung An
National Research Laboratory of Plant Functional Genomics, Division of Molecular and Life Sciences, Po-
hang University of Science and Technology (POSTECH), Pohang 790-784, Korea; 1Yeongnam Agricultural
Experimental Station, Milyang 627-130, Korea; author for correspondence (fax: +82-562-279-2199; e-mail:
Received 20 December 1999; accepted in revised form 22 July 2000
Key words: Ectopic expression, flowering, heading height, MADS-box genes, transgenic rice
Plant architecture is an important factor that controls several characteristics, such as light interception, harvest
index, and lodging. Plant architecture is controlled by a group of regulatory genes. It was previously found that
ectopic expression of some MADS-box genes resulted in early flowering and a dwarf habit in Arabidopsis and
tobacco (Nicotiana tabacum) plants. To explore ways to alter heading time and heading height, we expressed
ectopically several OsMADS (Oryza sativa MADS-box) genes in rice plants. The OsMADS cDNA clones were
connected to the maize ubiquitin promoter in the sense orientation, and the constructs were introduced into rice


Source: An, Gynheung - Department of Life Science, Pohang University of Science and Technology


Collections: Biotechnology; Biology and Medicine