Expression of gibberellin 3 beta-hydroxylase gene in a gravi-response mutant, weeping Japanese flowering cherry.

Mami Sugano*, Yuriko Nakagawa, Hiroshi Nyunoya, Teruko Nakamura

*この研究の対応する著者

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Expressions 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.

本文言語English
ページ(範囲)261-266
ページ数6
ジャーナルBiological sciences in space = Uchū seibutsu kagaku
18
4
DOI
出版ステータスPublished - 2004 12月
外部発表はい

ASJC Scopus subject areas

  • 医学(全般)

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