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Expression of gibberellin 3 beta-hydroxylase gene in a gravi-response mutant, weeping Japanese flowering cherryExpressions of the gibberellin biosynthesis gene were investigated in a normal upright type and a gravi-response mutant, a weeping type of Japanese flowering cherry (Prunus spachiana), that is unable to support its own weight and elongates downward. A segment of the gibberellin 3 beta-hydroxylase cDNA of Prunus spachiana (Ps3ox), which is responsible for active gibberellin synthesis, was amplified by using real-time RT-PCR. The content of Ps3ox mRNA in the weeping type was much greater than that in the upright type, while the endogenous gibberellin level was much higher in the elongating zone of the weeping type. These results suggest that the amount and distribution of synthesized gibberellin regulate secondary xylem formation, and the unbalanced distribution of gibberellin affects the gravi-response of the Prunus tree.
Document ID
20050184292
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sugano, Mami
(Graduate School of Science, Japan Women's University Bunkyo-ku, Tokyo, Japan)
Nakagawa, Yuriko
Nyunoya, Hiroshi
Nakamura, Teruko
Date Acquired
August 23, 2013
Publication Date
December 1, 2004
Publication Information
Publication: Uchu seibutsu kagaku
Volume: 18
Issue: 4
ISSN: 0914-9201
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other

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