PMID: 11607192Jun 15, 1991Paper

Rice type I phytochrome regulates hypocotyl elongation in transgenic tobacco seedlings

Proceedings of the National Academy of Sciences of the United States of America
A. NagataniMasaki Furuya

Abstract

We have examined the biological activity of rice type I phytochrome (PI) in transgenic tobacco seedlings. The progeny of four independent transformants that expressed the rice PI gene segregated 3:1 for shorter hypocotyl length under dim white light (0.04 W/m2). By contrast, this phenotype was not observed either in the dark or under white light at higher intensity (6.0 W/m2). This suggests that the phenotype is dependent not only on light but also on light intensity. The increased light sensitivity cosegregated with the kanamycin-resistance marker as well as with the rice PI polypeptides, indicating that this phenotype is directly related to the expression of the transgene. The transgenic plants showing short hypocotyls exhibited a reduced growth rate throughout the elongation period, and the resulting shorter hypocotyl length was attributable to shorter epidermal cell length but not to reduced cell number. Furthermore, successive pulse irradiations with red light elicited short hypocotyls similar to those obtained under dim white light, and the effect was reversed by immediate far-red light treatment, providing a direct indication that the phenotype is caused by biologically active rice PI. Therefore, the far-red-absorbing fo...Continue Reading

References

May 1, 1990·The Plant Cell·P M GilmartinN H Chua
Jul 1, 1990·Photochemistry and Photobiology·K TomizawaM Furuya
Jan 1, 1989·Advances in Biophysics·M Furuya
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Citations

Dec 1, 1994·Plant Molecular Biology·T D Elich, J Chory
Aug 1, 1996·Plant Molecular Biology·K Sakamoto, A Nagatani
Feb 3, 2009·Planta·Michael RiemannPeter Nick
Dec 1, 1991·Proceedings of the National Academy of Sciences of the United States of America·M T Boylan, P H Quail
Jun 1, 1992·Oncology Nursing Forum·R M Carroll-Johnson
Jun 1, 1996·Annual Review of Plant Physiology and Plant Molecular Biology·Albrecht Von Arnim, Xing-Wang Deng
Feb 24, 2005·Annual Review of Plant Biology·Masaki Furuya
Apr 16, 1998·Proceedings of the National Academy of Sciences of the United States of America·C LinA R Cashmore
May 29, 2014·Journal of Experimental Botany·Sankalpi N Warnasooriya, Thomas P Brutnell
Sep 6, 2011·Biotechnology Advances·I RubertiG Morelli
Mar 19, 2013·Plant, Cell & Environment·Ansuman RoyBaishnab C Tripathy

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