Articles
GENETIC ENGINEERING OF FLORICULTURAL CROPS: MODIFICATION OF FLOWER COLOUR, FLOWERING AND SHAPE
Article number
953_29
Pages
209 – 216
Language
English
Abstract
We have been using genetic engineering to develop and commercialize new floricultural cultivars focusing on novel flower colour.
Rose, carnation and chrysanthemum do not have violet or blue flowers due to their lack of ability to synthesize the delphinidin-based anthocyanins which most violet/blue flowers contain.
Flavonoid 3, 5-hydroxylase (F35H) is the key enzyme on the biosynthesis pathway leading to delphinidin.
Transgenic rose, carnation and chrysanthemum expressing a heterologous F35H gene produced flowers with a novel violet/blue flower colour for these species, not possible by hybridization breeding.
Transgenic carnations are sold in USA, EU and Japan and a transgenic rose in Japan.
Rose, carnation and chrysanthemum expressing an Arabidopsis FT (a gene that promotes flowering) exhibited very early flowering phenotypes.
Expressing dominant chimeric repressors of various transcriptional factors in transgenic rose resulted in various novel flower morphologies.
These technologies will be useful for development of novel floricultural crops in future.
Rose, carnation and chrysanthemum do not have violet or blue flowers due to their lack of ability to synthesize the delphinidin-based anthocyanins which most violet/blue flowers contain.
Flavonoid 3, 5-hydroxylase (F35H) is the key enzyme on the biosynthesis pathway leading to delphinidin.
Transgenic rose, carnation and chrysanthemum expressing a heterologous F35H gene produced flowers with a novel violet/blue flower colour for these species, not possible by hybridization breeding.
Transgenic carnations are sold in USA, EU and Japan and a transgenic rose in Japan.
Rose, carnation and chrysanthemum expressing an Arabidopsis FT (a gene that promotes flowering) exhibited very early flowering phenotypes.
Expressing dominant chimeric repressors of various transcriptional factors in transgenic rose resulted in various novel flower morphologies.
These technologies will be useful for development of novel floricultural crops in future.
Publication
Authors
K. Gion, R. Suzuri, K. Ishiguro, Y. Katsumoto, S. Tsuda , Y. Tanaka, E. Mouradova, F. Brugliera , S. Chandler
Keywords
carnation, flower colour, genetic engineering, rose, transcriptional factor
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