Tandemly arranged chalcone synthase A genes contribute to the spatially regulated expression of siRNA and the natural bicolor floral phenotype in Petunia hybrida

2012 ◽  
Vol 70 (5) ◽  
pp. 739-749 ◽  
Author(s):  
Yasumasa Morita ◽  
Ryoko Saito ◽  
Yusuke Ban ◽  
Natsu Tanikawa ◽  
Kazuyuki Kuchitsu ◽  
...  
Keyword(s):  
Petunia Hybrida ◽  
Chalcone Synthase ◽  
Regulated Expression ◽  
Floral Phenotype

Research note: Maternally-controlled ovule abortion results from cosuppression of dihydroflavonol-4-reductase or flavonoid-3′,5′-hydroxylase genes in Petunia hybrida

2002 ◽  
Vol 29 (12) ◽  
pp. 1500 ◽  
Author(s):  
Richard A. Jorgensen ◽  
Qiudeng Que ◽  
Carolyn A. Napoli
Keyword(s):  
Seed Coat ◽  
Petunia Hybrida ◽  
Chalcone Synthase ◽  
Flower Colour ◽  
Female Sterility ◽  
Wild Type ◽  
Direct Inhibition ◽  
Embryo Abortion ◽  
Maternal Tissue ◽  
Normal Seed

Transgenes designed to overexpress anthocyanin genes An6 (encoding dihydroflavonol-4-reductase) or Hf1 (encoding flavonoid-3′,5′-hydroxylase) in Petunia hybrida L. produced flower colour phenotypes similar to those caused by sense cosuppression of chalcone synthase (Chs) genes. However, unlike Chs, sense cosuppression of An6 and Hf1 resulted in female infertility in transgenotes exhibiting complete phenotypic suppression of anthocyanins. Female sterility appeared to be due to embryo abortion, with discolouration of ovules first appearing about 4 d post-fertilization, followed by gradual collapse of the ovule. Pollen from cosuppressed, female-sterile transgenotes placed on wild-type stigmas produced normal seed set, indicating that sterility of cosuppressed plants was maternally controlled. We suggest an hypothesis that cosuppression of An6 and Hf1 leads to accumulation of dihydroflavonols in the seed coat, a maternal tissue, and that this accumulation inhibits embryo growth, either directly or indirectly. In this hypothesis, direct inhibition of embryo growth would require that dihydroflavonols diffuse from the seed coat into the embryo and act there, whereas indirect inhibition would require that dihydroflavonols interfere with some capacity of the seed coat to promote embryo growth.

scholarly journals Different roles for calcium and calmodulin in phytochrome‐ and UV‐regulated expression of chalcone synthase

1998 ◽  
Vol 13 (6) ◽  
pp. 763-772 ◽  
Author(s):  
Hanns Frohnmeyer ◽  
Chris Bowler ◽  
Jian‐kang Zhu ◽  
Hiroshi Yamagata ◽  
Eberhard Schäfer ◽  
...  
Keyword(s):  
Chalcone Synthase ◽  
Regulated Expression

Promoter analysis of the chalcone synthase (chsA) gene of Petunia hybrida: a 67 bp promoter region directs flower-specific expression

1990 ◽  
Vol 15 (1) ◽  
pp. 95-109 ◽  
Author(s):  
Ingrid M. van der Meer ◽  
Cornelis E. Spelt ◽  
Joseph N. M. Mol ◽  
Antoine R. Stuitje
Keyword(s):  
Promoter Analysis ◽  
Promoter Region ◽  
Petunia Hybrida ◽  
Chalcone Synthase ◽  
Specific Expression

Transgene-mediated suppression of chalcone synthase expression in Petunia hybrida results from an increase in RNA turnover

1994 ◽  
Vol 6 (6) ◽  
pp. 861-877 ◽  
Author(s):  
R. Van Blokland ◽  
N. Van der Geest ◽  
J.N.M. Mol ◽  
J.M. Kooter
Keyword(s):  
Petunia Hybrida ◽  
Chalcone Synthase ◽  
Rna Turnover

Cloning and analysis of two genes for chalcone synthase from Petunia hybrida

1985 ◽  
Vol 199 (2) ◽  
pp. 208-215 ◽  
Author(s):  
H. J. Reif ◽  
U. Niesbach ◽  
B. Deumling ◽  
H. Saedler
Keyword(s):  
Petunia Hybrida ◽  
Chalcone Synthase
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