Title:
【発明の名称】植物器官の形態形成を制御し決定するための方法,そのためのホメオ遺伝子,プロモーター,及び関連するその用途
Document Type and Number:
Japanese Patent JPH07505779
Kind Code:
A
Abstract:
A method for controlling the morphogenesis of plant organs is disclosed which comprises causing the underexpression of a homeotic gene responsible for determining the identity of the plant organ in object. The method has particular application to flowers, where, by way of a first example herein, the flower petunia has been modified to present an additional whorl of petals derived from the modification of sepals. The additional whorl of petals may be formed by the conversion of sepals to petals, and/or by the stimulation of the growth of the existing petal structures to define inverted structures that appear to present a second whorl. The hometoic gene green petal in petunia has been cloned and characterized and is presented herein, both alone and in association with expression control sequences and in vectors for transgenic ectopic expression. In a second example, the same flower may be modified to present a whorl of petals having sepaloid characteristics along at least a portion thereof. The invention extends to a promoter construct derived from the CaMV 35S promoter and designated herein m35S. The promoter is particularly suited for the construction of homeotic transgenes in accordance wtih the present method. Petunia flowers having a whorl of modified petals prepared by the present method are likewise disclosed.
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Inventors:
Halfuta, Ursula
Van der Chroll, Alexander El.
Kush, Anil
Chua, Nam-High
Van der Chroll, Alexander El.
Kush, Anil
Chua, Nam-High
Application Number:
JP51858693A
Publication Date:
June 29, 1995
Filing Date:
April 13, 1993
Export Citation:
Assignee:
THE ROCKEFELLER UNIVERSITY
International Classes:
A01H5/00; A01H5/02; C07K14/415; C12N5/10; C12N15/09; C12N15/29; C12N15/82; (IPC1-7): C12N15/09; C12N5/10
Attorney, Agent or Firm:
Takashi Ishida (3 others)